How much does it cost to hire a performance testing firm in the United Kingdom?

Pricing varies thanks to a myriad of factors, including scope, tool licenses, environments, and compliance needs. According to Clutch’s recent data, most UK-based performance testing firms charge: Hourly/day rates: £70 – £150 per hour or £600 – £1,200 per day Fixed engagements: £15,000 – £80,000+ for discovery, strategy, scripting, and execution of load and stress testing solutions across key journeys Ongoing optimisation: £5,000 – £25,000+ per month for continuous application performance testing, CI/CD integration, and tuning. Furthermore, expect separate line items for cloud load infrastructure, APM tooling, and any enterprise license fees.

Which industries do UK performance testing firms serve?

UK-based consultancies support a wide mix of high-traffic, regulated, and real-time use cases such as: Financial services and fintech — payments, trading, and Open Banking APIs E-commerce and retail — peak readiness for promotions and holidays Media, broadcast, and sports streaming — concurrency and latency at scale Gaming and entertainment — matchmaking, in-game events, live ops Healthcare and the public sector — NHS-scale portals, GOV.UK services Travel, transport, and telecom — ticketing, journey planning, network portals Many firms also provide website performance testing for editorial, membership, and education platforms.

How do I choose the right performance testing agency in the UK?

Define the specific requirements and critical objectives of your project to align the search strategy. Then, browse through Clutch’s directories and assess potential partners on: Match to your stack — Shortlist partners experienced with your tech. Tooling and observability — Look for expertise in k6/Gatling/JMeter/LoadRunner plus APM and logs. Test realism — Confirm they can generate traffic from UK regions, handle test data, and model spikes, soak, and degradation patterns. Delivery fit — Check if you need onshore-only, hybrid, or managed services; validate their CI/CD integration and reporting cadence. Proof of impact — Review UK case studies, references in your vertical, and sample reports with clear bottleneck analysis and tuning plans. Use Clutch filters for budget, location, industry, and “performance testing consultancy UK” focus to quickly narrow the field.

What are red flags when hiring a performance testing firm in the UK?

One-size-fits-all scripts with no discovery or baseline No plan for production-like environments, data, or third-party dependencies Over-reliance on a single tool without explaining trade-offs Vague reporting, no root-cause analysis, or no remediation guidance Hidden costs for licenses or cloud load generators Guaranteed percentage gains before reviewing your architecture Ignoring security of test data or UK GDPR obligations Limited knowledge of load testing services beyond basic concurrency The UK is home to many exceptional firms, so there’s no need to worry about running out of options. Be objective and meticulous when assessing possible partners for your testing project.

Home Software Testing Performance Testing United Kingdom

Top Performance Testing Services in the United Kingdom

Q: Why hire a UK-based performance testing agency?

UK-based teams bring proximity to major data centres (London/UK South), familiarity with UK GDPR and sector rules (FCA, Open Banking, NHS standards), and hands-on experience with British peak events like Black Friday, Boxing Day sales, and live sports streaming. That local context helps agencies build credible non-functional requirements, choose realistic test profiles, and align SLAs with your market. Moreover, you’ll also find deep expertise across open-source and enterprise toolchains (k6, JMeter, Gatling, LoadRunner) and modern cloud-native stacks. For organizations that need close collaboration, a UK partner can co-locate for war rooms, tune infrastructure in-region, and coordinate with SRE and platform engineering in your time zone.

From London’s fintech corridor to Manchester’s e-commerce powerhouses and Cambridge’s research-led startups, the UK is a prime market for high-stakes digital performance. Performance testing services help teams validate speed, scalability, and resilience before peak events and product launches.

On Clutch, you’ll find verified UK partners specializing in load, stress, and website performance testing, backed by in-depth client reviews, case studies, and service focus data. Use filters for budget, tech stack, industry, and location to shortlist the right fit—whether you need an onshore consultancy for regulated environments or a hybrid model for faster throughput. Start with these curated directories:

• Top Performance Testing Companies

• Performance Testing Companies in London

• Performance Testing Companies in Birmingham

• Performance Testing Companies in Manchester

• UK Performance Testing Companies for Financial Services

Ratings Updated: September 18, 2026

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THEY.dev

5.0 31 reviews

Premier Verified

$5,000+

$25 - $49 / hr

10 - 49

London, England

Services provided

10% Application Testing

40% Custom Software Development

30% UX/UI Design +2

10% IT Strategy Consulting

10% Mobile App Development

Focus Areas

10% Performance Testing

50% Manual Testing

30% Automation Testing +1

10% Load Testing

THEY.dev is a versatile web development firm specializing in creating and enhancing digital platforms, as evidenced by their projects with various industries including SaaS, e-commerce, and nonprofit organizations. A consistent theme across 90% of the reviews is their strong value for cost and the alignment of company values. Although communication was sometimes noted as needing improvement, 100% of clients expressed satisfaction with the project outcomes and praised the team's expertise and adaptability.

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Reviews mention Patient
The feedback regarding TH-EY reflects a highly positive sentiment, particularly highlighting their patience throughout the project. Clients noted that TH-EY was 'extremely patient and proactive' with changes and consistently listened to suggestions, ensuring thorough understanding of requirements. Their responsiveness and willingness to adapt were emphasized, contributing to a rewarding collaborative experience. Overall, clients appreciated the balance between professionalism and approachability, indicating a strong fit for projects requiring careful attention and flexibility.

Custom Web Platform for Alternative Education Provider

5.0 Oct 20, 2023

TH-EY listen exceptionally well and make detailed notes during any discussion to ensure that we are getting exactly what we require. TH-EY strike the right balance between being professional and personable and they are extremely patient and proactive when it comes to any changes we may wish to make. TH-EY are extremely knowledgeable and are ready to provide several solutions to any given problem so that we are able to weigh up the pros and cons of each solution and find the best way forward.
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Average Project Cost Breakdown

Less than $10,000 (9) $10,000 to $49,000 (5) $50,000 to $199,999 (4) $200,000 to $999,999 (1)

What Clients Have Said
Clients consistently highlight THEY.dev's strong value for money and fitting pricing. Feedback notes that the pricing aligns well with client budgets, with one client stating, "Good value for cost," while another emphasized, "Pricing fit our budget." Overall sentiment leans positive, with several clients expressing satisfaction with the quality of work relative to the costs incurred, leading to successful project outcomes without exceeding financial expectations.
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More responsive than most other service providers

THEY.dev is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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England (14) United States (4) Belgium (2) Finland (1) Netherlands (1) Poland (1)

This provider is fluent in 2 languages:

English

Polish

This provider is available in 5 time zones:

Greenwich Mean Time (GMT)

Central European Time (CET)

Eastern European Time (EET)

Universal Coordinated Time (UTC)

(Arabic) Egypt Standard Time (ART)

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IVALUEPLUS SERVICES PVT LTD

4.9 9 reviews

Premier Verified

$5,000+

< $25 / hr

50 - 249

Calcot, England

Services provided

10% Application Testing

10% AI Agents

10% Business Consulting +7

10% DevOps Managed Services

10% Finance & Accounting Outsourcing (FAO)

10% HR Outsourcing

10% IT Managed Services

10% IT Staff Augmentation

10% Recruitment Process Outsourcing

10% Social Media Marketing

Focus Areas

10% Performance Testing

15% Compliance Testing

10% Automation Testing +9

10% Compatibility Testing

10% Manual Testing

10% Reliability Testing

10% Stress Testing

5% Beta Testing

5% Load Testing

5% Localization Testing

5% Recovery Testing

5% Volume Testing

IVALUEPLUS SERVICES PVT LTD is a multifaceted service provider specializing in digital marketing, HR management, and offshore development. The company is highly rated for its strategic thinking and reliable execution, with over 95% on-time delivery and a 35% improvement in content execution turnaround time. Approximately 70% of reviewers highlight the company's responsiveness and flexibility, underscoring its adaptability to evolving client needs.

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Reviews mention Adaptable
IVALUEPLUS SERVICES PVT LTD has received positive feedback regarding its adaptability, particularly in responding to evolving client needs. Clients noted the company's proactive approach in managing project scope changes and tight deadlines. One client emphasized IVALUEPLUS SERVICES PVT LTD's quick response to specific requests and adjustments, which contributed to a smooth operational launch. The team's professionalism and commitment to excellence were highlighted, showcasing their ability to efficiently handle complex processes without major issues.

HR, IT & Accounting Services for Baby & Mother Care Company

5.0 Nov 14, 2024

What truly stood out was how quickly they adapted to our evolving needs. Whether it was a shift in the project scope, adjustments to timelines, or specific requests from our team, IVP was always quick to respond with solutions that kept things moving forward smoothly.
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Average Project Cost Breakdown

$200,000 to $999,999 (1) $1,000,000 to $9,999,999 (1)

What Clients Have Said
IVALUEPLUS SERVICES PVT LTD has received positive feedback regarding its cost-effectiveness and overall value for money. Clients have highlighted the company's competitive pricing and alignment with their budget, noting it as a key reason for selection. For instance, one client appreciated their 'good value for cost' while another emphasized their pricing fit. Overall, the sentiment reflects satisfaction with the quality of services provided relative to the investment made.
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Australia (2) Hong Kong (1) India (1) Norway (1) England (1)

This provider is available in 3 time zones:

India Standard Time (IST)

Central European Time (CET)

Central Standard Time (CST)

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Calcot, England

Enovatin - Rose Bank, 44 Bath Road
Calcot, England RG31 7QJ
21 - 30

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Valor Software

5.0 20 reviews

Verified

$10,000+

$50 - $99 / hr

50 - 249

London, England

Services provided

10% Application Testing

10% Application Management & Support

10% Custom Software Development +7

10% Enterprise App Modernization

10% IT Staff Augmentation

10% IT Strategy Consulting

10% Mobile App Development

10% UX/UI Design

10% Web Design

10% Web Development

Focus Areas

10% Performance Testing

10% Automation Testing

10% Beta Testing +7

10% Compatibility Testing

10% Compliance Testing

10% Load Testing

10% Localization Testing

10% Manual Testing

10% Reliability Testing

10% Stress Testing

Valor Software is a versatile software development company specializing in creating cloud-native platforms, integrating complex systems, and enhancing user experiences across various industries. The company is highly praised for its project management and technical expertise, with 100% of reviews highlighting their professionalism, timely delivery, and effective communication. Valor Software consistently exceeds client expectations by offering tailored solutions that combine creativity with precision, earning a strong reputation as a reliable tech partner.

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Reviews mention Autonomous
Valor Software has received positive feedback regarding their autonomy in project execution. A VP of Engineering noted that their engineers were tightly integrated into internal teams, delivering on time and contributing independent ideas for project direction. The client appreciated Valor's skilled engineers who excelled both individually and collaboratively, reflecting a strong alignment with their operational culture. Overall, the sentiment is highly favorable, emphasizing Valor's capability to work autonomously while maintaining effective collaboration.

Staff Aug & Design Services for Travel Identification Co

5.0 Sep 25, 2024

Valor has been incredibly aligned around the tech stack, general mindset on how to develop software and brings in engineers who are skilled, work independently and can work just as well alone and in larger teams.
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Industry Experience

Valor Software has demonstrated expertise across various industries, including Information Technology, eCommerce, and Financial Services. Clients praise their technical proficiency, effective project management, and ability to deliver creative, user-friendly solutions. In IT, they excelled in cloud migrations and application development; in eCommerce, they provided robust payment integration; and in Financial Services, their work improved data processing and user experience. Overall, feedback reflects a positive sentiment towards their professionalism and ability to drive impactful results tailored to specific industry needs.
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Healthcare eCommerce Software Engineering Other industries Transportation Wellness & Fitness Advertising & marketing IT Services Financial services Information technology

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Average Project Cost Breakdown

$50,000 to $199,999 (6) $10,000 to $49,000 (3) $200,000 to $999,999 (1) $1,000,000 to $9,999,999 (1)

What Clients Have Said
Valor Software is consistently praised for their cost-effectiveness and value for money. Clients highlighted that their pricing aligns well with budgets while delivering high-quality results. Specific feedback includes remarks about 'good value for cost' and 'pricing fit our budget.' Overall, the sentiment reflects satisfaction with the balance of quality and affordability, with clients noting substantial returns on their investments in various projects.
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United States (6) Canada (3) Sweden (1) United Arab Emirates (1) England (1)

This provider is fluent in 1 language:

English

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TestFort QA Lab

4.9 25 reviews

$10,000+

$25 - $49 / hr

50 - 249

London, England

Services provided

100% Application Testing

Focus Areas

20% Performance Testing

40% Automation Testing

20% Manual Testing +2

10% Compatibility Testing

10% Load Testing

TestFort QA Lab is a specialized Software Quality Assurance company known for its comprehensive App and Software Testing services. Across reviews, 100% of clients commend its ability to enhance test coverage and reliability, highlighting a consistent improvement in platform stability and issue reduction, such as a 40% average decrease in post-release defects. Their adaptable QA processes and integration into client workflows have been particularly lauded.

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Reviews mention Collaborative
TestFort QA Lab received positive feedback regarding their collaborative approach and effective project management. Clients noted the team's ability to integrate seamlessly with internal teams and maintain open communication, which was crucial during project adjustments. One client highlighted their impressive responsiveness and flexibility in aligning priorities as new features emerged, emphasizing the importance of collaboration in achieving measurable outcomes, such as a 52% reduction in payment and subscription issues.

App Testing for Password Management App

4.5 Jun 1, 2023

Our collaboration was so successful, that in the scope of the following years, the team grew up to over 15 experts. TestFort QA Lab was able to accommodate any expert-related request and provided us with a dedicated team that was well-suited to our project needs. Our workflow was highly effective. Project management was maintained via Jira. Following a combination of Kanban and Scrum methodologies allowed for swift issue resolution and change implementation. Our communication via Slack was so efficient that there was no need for prolonged 'update' calls or group meetings. It was as though we were collaborating in real-time. Whenever an issue popped up or a change was needed, the response was swift and effective.
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Platform QA Support for Sports Education Academy

5.0 Apr 9, 2026

TestFort team demonstrated high level project management throughout the engagement. Their team maintained a collaborative approach and integrated well with our internal product and development teams.
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8 of 8 Performance Testing reviews are 5 stars

6 new reviews for Performance Testing in past 6 months

Less than $10,000 avg. project cost

Performance Testing Experience

TestFort QA Lab has received overwhelmingly positive feedback for their Performance Testing services, with 92% of reviews reflecting satisfaction. Clients consistently highlight their expertise in handling AI-driven applications and complex user scenarios, with notable improvements in stability and user experience, such as a 40% reduction in critical issues and a 35% increase in system performance under load. The team's adaptability and proactive communication were frequently praised, solidifying their reputation as a reliable partner in QA solutions.
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Average Project Cost Breakdown

$10,000 to $49,000 (10) Less than $10,000 (3) $50,000 to $199,999 (3)

What Clients Have Said
TestFort QA Lab has consistently received positive feedback regarding their cost-effectiveness and value for money. Clients frequently noted that their pricing aligned well with budgets, with one stating, "Pricing fit our budget" and another emphasizing "good value for cost." The overall sentiment is that TestFort delivers reliable quality assurance services that enhance product stability without exorbitant expenses, making them a preferred partner for various projects across different industries.
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United States (10) Ukraine (4) England (2) Canada (1) France (1) Israel (1) Italy (1) Switzerland (1)

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PlutoSec Cybersecurity

5.0 78 reviews

$1,000+

$100 - $149 / hr

50 - 249

Rochdale, England

Services provided

20% Application Testing

65% Cybersecurity

15% IT Managed Services

Focus Areas

10% Performance Testing

25% Manual Testing

15% Beta Testing +6

15% Reliability Testing

10% Compatibility Testing

10% Localization Testing

5% Compliance Testing

5% Load Testing

5% Stress Testing

PlutoSec is a cybersecurity company specializing in comprehensive penetration testing and application testing services. Reviews consistently highlight their manual-first approach to security testing, which goes beyond automated scans, and their ability to deliver clear, actionable remediation guidance. With over 85% of reviews noting their strong project management and communication skills, PlutoSec is regarded for its commitment to enhancing clients' security postures and aligning with industry standards.

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Reviews mention Accommodating
Clients have consistently praised PlutoSec for their accommodating nature, noting their responsiveness and adaptability to specific needs. One client highlighted how PlutoSec made them feel like a priority, quickly addressing questions and adjusting to their schedule. Additionally, their personalized approach, tailored to the client's unique business requirements, further exemplified their commitment to client satisfaction. Overall, the sentiment reflects a strong appreciation for PlutoSec's ability to foster a collaborative and supportive working relationship.

Cybersecurity Services for Vacation Rental Platform

5.0 Jun 30, 2025

PlutoSec’s project management was smooth and well-coordinated from start to finish. They laid out a clear timeline, stuck to it, and communicated regularly with updates at every stage. Whenever we had questions or needed adjustments, they responded quickly and made us feel like a priority. Their ability to adapt to our schedule and explain complex issues in plain language made the entire process easy to follow and stress-free.
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2 of 2 Performance Testing reviews are 5 stars

$10,000 – $49,000 avg. project cost

Performance Testing Experience

PlutoSec has received overwhelmingly positive feedback for their Performance Testing services, with 100% of reviews highlighting their expertise and effective communication. Clients noted significant improvements in security posture and compliance, particularly in penetration testing and cloud security solutions. Notable strengths include timely project delivery and a collaborative approach, with 90% of clients appreciating their ability to simplify complex concepts. Suggestions for improvement include enhancing client portals for project tracking, indicating a strong overall sentiment towards their services.
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Average Project Cost Breakdown

$10,000 to $49,000 (53) Less than $10,000 (14) $50,000 to $199,999 (1)

What Clients Have Said
PlutoSec is recognized for providing excellent value for money, with numerous clients noting that their pricing aligns well with budgets while delivering substantial results. Feedback highlights the effectiveness of their manual penetration testing and tailored remediation guidance, which clients found to be practical and actionable. For instance, one review mentioned that the engagement led to a significant reduction in vulnerabilities, demonstrating a good return on investment. Overall, clients express a strong sentiment of satisfaction regarding the cost-effectiveness of PlutoSec's services.
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Canada (36) Italy (23) United States (8) Switzerland (1)

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Qualimatrix Technologies Pvt Ltd

5.0 4 reviews

$1,000+

< $25 / hr

1,000 - 9,999

London, England

Services provided

50% Application Testing

50% IT Staff Augmentation

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

Qualimatrix Technologies Pvt Ltd is a company specializing in comprehensive software testing services, including App Testing, QA Testing, and Software Validation. With a strong emphasis on quality assurance, they have received overwhelmingly positive feedback, with reviewers highlighting their expertise, effective communication, and commitment to deadlines. Approximately 90% of reviewers appreciated their tailored testing approaches and proactive problem-solving skills.

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Industry Experience

Qualimatrix Technologies Pvt Ltd has demonstrated expertise across various industries, including fintech, social media, and general IT services. Clients praise their strong communication, client-centric approach, and innovative testing techniques. In the financial services sector, they improved website quality and reduced release costs, while in social media, they successfully implemented performance and automated testing. Overall, feedback reflects a positive sentiment towards their reliability and effectiveness in delivering high-quality testing solutions tailored to specific industry needs.
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Financial services IT Services

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Average Project Cost Breakdown

$50,000 to $199,999 (1)

What Clients Have Said
Qualimatrix Technologies Pvt Ltd is consistently recognized for providing good value for cost, with multiple clients noting that their pricing fits within budgetary constraints. One client highlighted the company's excellent team at a reasonable cost, while another emphasized the alignment of company values and cultural fit. Overall, the sentiment reflects a positive perception of the company's cost-effectiveness, with clients reporting significant cost and time savings alongside improved quality and efficiency in their projects.
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England (2) India (1)

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Blue Ripples Technologies

4.8 6 reviews

Undisclosed

< $25 / hr

10 - 49

London, England

Services provided

10% Application Testing

40% Custom Software Development

25% IoT Development +2

15% Digital Engineering

10% Microservices Architecture Services

Focus Areas

10% Performance Testing

40% Automation Testing

30% Manual Testing +2

10% Compliance Testing

10% Reliability Testing

Blue Ripples Technologies is an application testing and software testing company that excels in providing automation solutions and integration services. The company has received overwhelmingly positive feedback, with clients praising their industry expertise and project management skills. They are noted for their ability to act as a partner, aligning with client visions and demonstrating flexibility throughout project phases.

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Reviews mention Dedicated
Clients have consistently praised Blue Ripples Technologies for their dedication and commitment throughout project execution. One client highlighted the team's flexibility, noting that they worked late hours and provided on-site support during critical phases, exemplified by the CEO's involvement during the production push. Feedback emphasized their customer-centric approach and willingness to co-create, reinforcing a strong sentiment of dedication to client success.

Mobile App & Web Development & Design for Insurance Co

5.0 Jul 23, 2024

The project started on-premise and then moved to the cloud, so a lot of technology refitment was necessary which Vijay and the team executed to the utmost satisfaction of the customer. They were flexible, worked late hours and during go-live their CEO Sree came on-site and spent the whole night with the team when the code was being pushed into production. Their job is pretty niche in multiple areas and they are always hungry to co-create with the customer.
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1 of 1 Performance Testing reviews is 5 stars

Unknown avg. project cost

Performance Testing Experience

Blue Ripples Technologies has garnered positive feedback in Performance Testing, with 85% of reviewers praising their expertise and project management. Clients highlight their adaptability, industry knowledge, and effective communication, noting an impressive alignment with project goals. A recurring theme is their collaborative approach, which enhances product development. However, 15% of feedback suggests potential for broader platform diversification in the Oil and Gas sector. Overall, the sentiment is highly favorable, indicating a strong capability for delivering impactful solutions.
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India (2) Bahrain (1) Malaysia (1)

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London, England

Greenside House, 50 Station Rd, Wood Green
London, England N22 7TP
1

+44

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Testology.io Ltd

5.0 1 review

$5,000+

$25 - $49 / hr

2 - 9

Keynsham, England

Services provided

100% Application Testing

Focus Areas

25% Performance Testing

25% Automation Testing

25% Compatibility Testing +1

25% Manual Testing

Testology.io Ltd is a quality assurance company specializing in developing robust QA solutions. According to positive feedback, 100% of reviewers commend their ability to meet or exceed timelines and deeply understand complex product missions. Clients highlight their invaluable work and successful implementation of comprehensive QA processes.

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Industry Experience

Testology.io Ltd has demonstrated strong expertise in the healthcare industry, particularly in providing comprehensive QA solutions. Clients have praised their ability to develop robust processes tailored to complex products, with an emphasis on meeting project timelines. The overall sentiment reflects a high level of satisfaction, highlighting their understanding of client needs and the positive impact on project outcomes. Potential clients in healthcare can expect reliable and effective QA support from Testology.io Ltd.
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Healthcare

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Average Project Cost Breakdown

$10,000 to $49,000 (1)

What Clients Have Said
Clients have expressed satisfaction with Testology.io Ltd's pricing and overall value, noting that their services provided a robust QA solution that met project needs efficiently. One client highlighted the company's ability to understand complex product missions and deliver invaluable work, while another emphasized that all timelines were consistently met. Overall, the sentiment reflects a strong appreciation for the quality of work relative to the costs involved, indicating good value for money.
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Testinium

4.7 5 reviews

$75,000+

$50 - $99 / hr

250 - 999

London, England

Services provided

40% Application Testing

20% Application Management & Support

20% IT Managed Services +2

10% IT Staff Augmentation

10% IT Strategy Consulting

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

Testinium is a leading provider of application testing and software quality assurance services, recognized for their expertise in testing automation and quality improvement. Reviews highlight their impressive testing automation suite and quick response times, with 100% of reviewers appreciating their technical competency and project management skills. Clients report significant improvements, including a 6% decrease in technical bugs, reflecting Testinium's effective and reliable services.

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Reviews mention Unique expertise
Testinium has received positive feedback regarding their unique expertise in testing throughout the development cycle. A CTO from n11.com highlighted their 'know-how, expertise, and references in this industry' as key factors for selection. The client noted that Testinium's focused approach allowed them to develop deep expertise, which significantly improved their performance testing and overall project outcomes, particularly in identifying bottlenecks and enhancing CI/CD processes.

E-Commerce Development for Online Retail Company

5.0 Mar 31, 2021

What did you find most impressive or unique about this company? They mainly address one specific area, the testing, in whole development cycle create deep expertise.
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1 of 3 Application Testing reviews are 5 stars

$200,000 – $999,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

Performance & Automation Testing for Beverage Company
5.0 — Testinium provided performance testing to a beverage firm's services. They also conducted automation testing for the client's web and mobile devices which Read more
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Industry Experience

Testinium has demonstrated expertise across the Food & Beverages, IT Services, Retail, and Information Technology industries. Clients praised their testing automation tools, which significantly reduced bugs and improved application performance. In Food & Beverages, they achieved a 50% decrease in customer complaints. In IT Services and Retail, Testinium's QA processes supported e-commerce platforms during peak seasons. Overall, feedback highlights their strong project management, responsiveness, and hands-on approach, making them a suitable partner for companies seeking robust testing solutions.
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Food & Beverages IT Services Retail Information technology

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London, England

The Shard 32 London Bridge Street
London, England SE1 9SG
6 - 9

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Testing Frameworks Limited

5.0 1 review

$5,000+

< $25 / hr

10 - 49

Woking, England

Services provided

50% Application Testing

50% IT Staff Augmentation

Focus Areas

10% Performance Testing

50% Automation Testing

40% Manual Testing

Testing Frameworks Limited specializes in Application Quality Assurance, providing exceptional Software Testing services. They consistently deliver detailed reports on time, aiding faster development cycles. Review feedback is overwhelmingly positive, with 100% of reviewers praising their understanding of project complexity and their impressive teamwork. Their services are commended for aligning well with client needs and budgets.

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1 of 1 Application Testing reviews are 5 stars

Unknown avg. project cost

Application Testing PROJECT HIGHLIGHT

Educational Platform Dev for Educational Company
5.0 — Testing Frameworks Limited is developing an educational platform for an educational company. The team is also responsible for the integration of AI, blockchain, and spatial computing. Read more
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Industry Experience

Testing Frameworks Limited has demonstrated expertise in the Education industry, garnering positive feedback for their effective project management and attention to detail. Clients highlight their ability to deliver timely reports and facilitate smoother development cycles. Their strengths include a strong cultural fit, responsiveness, and a commitment to understanding complex project requirements. This provider is well-suited for clients in the Education sector seeking innovative solutions, particularly in areas like AI and Blockchain integration.
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Education

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Average Project Cost Breakdown

What Clients Have Said
Testing Frameworks Limited is noted for providing cost-effective solutions that align well with client budgets. A CEO from Kabuni highlighted that the company's pricing fit their budget while also emphasizing a strong cultural fit. Overall, clients express satisfaction with the value received, citing timely deliverables and exceptional teamwork as key strengths, indicating a positive sentiment toward the company's overall cost-effectiveness.
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Qualitest Group

Not yet reviewed

Undisclosed

Undisclosed

1,000 - 9,999

London, England

Services provided

100% Application Testing

Focus Areas

25% Performance Testing

25% Load Testing

20% Automation Testing +2

20% Compatibility Testing

10% Manual Testing

Launched in 1997, Qualitest Group is a large Santa Clara, California-based Application Testing company. Their team offers Application Testing.
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London, England

Level 2, Equitable House 47 King William Street
London, England EC4R 9AF
1001 - 2000

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Planit Testing

Not yet reviewed

Undisclosed

Undisclosed

1,000 - 9,999

Reading, England

Services provided

50% Application Testing

10% AI Development

10% Cloud Consulting & SI +3

10% DevOps Managed Services

10% ERP Consulting and SI

10% IT Strategy Consulting

Focus Areas

50% Performance Testing

50% Automation Testing

Planit Testing is an Application Testing company. They were established in 1997, and their services include Application Testing and IT strategy consulting.
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Reading, England

Thames Tower, Level 2, Station Rd
Reading, England RG1 1LX
151 - 200

+44.203.868.3948

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TAREENITY FZE LLC

Not yet reviewed

$5,000+

< $25 / hr

10 - 49

London, England

Services provided

60% Application Testing

20% Application Management & Support

20% DevOps Managed Services

Focus Areas

10% Performance Testing

20% Automation Testing

20% Manual Testing +5

10% Compatibility Testing

10% Load Testing

10% Localization Testing

10% Reliability Testing

10% Stress Testing

Launched in 2013, TAREENITY FZE LLC is an Application Testing company. Their team provides Application Testing and Application Management & Support.
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London, England

32 Ashford Road, London
London, England E18 1JZ
2 - 5

+923334099330

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ClicQA

Not yet reviewed

$10,000+

$25 - $49 / hr

50 - 249

London, England

Services provided

100% Application Testing

Focus Areas

20% Performance Testing

80% Automation Testing

Established in 2016, ClicQA is a midsize Application Testing company. Their services include Application Testing.
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London, England

32 Willoughby Road
London, England N8 0JG
31 - 40

+44 208 090 2404

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360logica Software Testing Services

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

London, England

Services provided

80% Application Testing

10% Custom Software Development

10% Web Development

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

360logica Software Testing Services is a Noida, India-based Application Testing company. The team provides Application Testing and Custom Software Development.
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London, England

Suite 560 No 28 Old Brompton Rd., Kensington
London, England SW7 3SS

+44 800 098

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Infuse Consulting

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

LE5 4LE, England

Services provided

50% Application Testing

30% DevOps Managed Services

20% Computer Engineering

Focus Areas

50% Performance Testing

50% Automation Testing

Infuse Consulting is a midsize Application Testing company. They focus on Application Testing and DevOps Managed Services and were founded in 2002.
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Inspired Testing

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

London, England

Services provided

70% Application Testing

30% IT Managed Services

Focus Areas

50% Performance Testing

50% Automation Testing

Inspired Testing is a London, England-based Application Testing company. They specialize in Application Testing and IT managed services and were established in 2018.
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Tricentis

Not yet reviewed

Undisclosed

Undisclosed

1,000 - 9,999

London, England

Services provided

50% Application Testing

10% AI Consulting

10% Business Consulting +3

10% Cloud Consulting & SI

10% Computer Engineering

10% ERP Consulting and SI

Focus Areas

30% Performance Testing

40% Automation Testing

30% Load Testing

Tricentis is an Application Testing company headquartered in Austin, Texas and Wien, Austria. They specialize in Application Testing and cloud consulting & SI and were founded in 2007.
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London, England

6th Floor, 80 Cheapside
London, England EC2V 6EE
50 - 75

44.844.807.9905

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Spirent Communications

Not yet reviewed

Undisclosed

Undisclosed

1,000 - 9,999

Crawley, England

Services provided

25% Application Testing

25% Business Consulting

25% Cybersecurity +1

25% IT Managed Services

Focus Areas

35% Performance Testing

35% Automation Testing

30% Reliability Testing

Spirent Communications is a Cybersecurity company in San Jose, California and Beijing, China. They offer Cybersecurity and IT managed services and were launched in 1936.
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Crawley, England

Origin One 108 High Street,
Crawley, England RH10 1BD
201 - 250

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Testing Minds

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Basildon, England

Services provided

100% Application Testing

Focus Areas

20% Performance Testing

20% Automation Testing

20% Compatibility Testing +2

20% Manual Testing

20% Recovery Testing

Testing Minds is an Application Testing company launched in 2018. The company provides Application Testing.
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Resillion

Not yet reviewed

Undisclosed

Undisclosed

250 - 999

Birmingham, England

Services provided

50% Application Testing

30% Computer Engineering

20% Cybersecurity

Focus Areas

30% Performance Testing

30% Compatibility Testing

20% Automation Testing +1

20% Reliability Testing

Resillion, an Application Testing company, was launched in 2022. The midsize team focuses on Application Testing and Computer Engineering.
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Ten10 Group

Not yet reviewed

Undisclosed

Undisclosed

250 - 999

London, England

Services provided

30% Application Testing

15% AI Development

15% Computer Engineering +4

10% Business Continuity Management

10% Cloud Consulting & SI

10% DevOps Managed Services

10% IT Strategy Consulting

Focus Areas

30% Performance Testing

40% Automation Testing

30% Compatibility Testing

Ten10 Group is a midsize Application Testing company. Founded in 2004, the team provides Application Testing and Artificial Intelligence.
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Mtest Labs

Not yet reviewed

$5,000+

Undisclosed

2 - 9

London, England

Services provided

100% Application Testing

Focus Areas

15% Performance Testing

20% Automation Testing

20% Localization Testing +3

15% Compatibility Testing

15% Compliance Testing

15% Manual Testing

Mtest Labs is an Application Testing company. They were launched in 2011, and their services include Application Testing.
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iLAB

Not yet reviewed

Undisclosed

Undisclosed

250 - 999

London, England

Services provided

100% Application Testing

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

Located in North Sydney, Australia and London, England, iLAB is an Application Testing company. They offer Application Testing.
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London, England

Brook House, 10 Church Terrace, Richmond Upon Thames
London, England TW10 6SE
1

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Sollers Consulting

Not yet reviewed

Undisclosed

Undisclosed

250 - 999

London, England

Services provided

20% Application Testing

20% AI Consulting

20% BI & Big Data Consulting & SI +2

20% Cloud Consulting & SI

20% DevOps Managed Services

Focus Areas

60% Performance Testing

40% Automation Testing

Sollers Consulting, a big data analytics company, offer BI & big data consulting & SI and cloud consulting & SI. They were founded in 2000.
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London, England

14 Cullum Street, EC3M 7J
London, England EC3M 7JJ
2 - 5

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NovaQA LTD

Not yet reviewed

$5,000+

$100 - $149 / hr

10 - 49

BOLTON, England

Services provided

100% Application Testing

Focus Areas

10% Performance Testing

30% Automation Testing

10% Load Testing +7

10% Manual Testing

10% Reliability Testing

10% Stress Testing

5% Beta Testing

5% Compatibility Testing

5% Compliance Testing

5% Localization Testing

NovaQA LTD is a small Application Testing company headquartered in BOLTON, England. Their services include Application Testing.
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Acutest (Part of Trustmarque)

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Nether Poppleton, England

Services provided

70% Application Testing

30% UX/UI Design

Focus Areas

30% Performance Testing

40% Automation Testing

30% Load Testing

Established in 2002, Acutest (Part of Trustmarque) is a midsize Nether Poppleton, England-based Application Testing company. Their team specializes in Application Testing and UX/UI Design.
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2i Testing

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Edinburgh, Scotland

Services provided

100% Application Testing

Focus Areas

30% Performance Testing

70% Automation Testing

2i Testing is a midsize Edinburgh, Scotland-based Application Testing company. Their services include Application Testing.
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APPNETWISE

Not yet reviewed

$25,000+

$25 - $49 / hr

10 - 49

London, England

Services provided

20% Application Testing

20% Cloud Consulting & SI

20% Custom Software Development +2

20% IT Staff Augmentation

20% IT Strategy Consulting

Focus Areas

15% Performance Testing

30% Automation Testing

20% Reliability Testing +3

15% Compatibility Testing

10% Manual Testing

10% Recovery Testing

APPNETWISE is a Hyderabad, India-based IT strategy consulting company. They specialize in IT strategy consulting and cloud consulting & SI and were launched in 2022.
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London, England

Clarence Avenue
London, England SW4
2 - 5

+44 7469882054

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IQspeaks

Not yet reviewed

$10,000+

$50 - $99 / hr

2 - 9

London, England

Services provided

100% Application Testing

Focus Areas

10% Performance Testing

40% Automation Testing

20% Compliance Testing +2

20% Manual Testing

10% Compatibility Testing

IQspeaks L is an Application Testing company. Launched in 2015, the company is based in London, England. Their team specializes in Application Testing.
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RedQA

Not yet reviewed

$5,000+

$25 - $49 / hr

2 - 9

London, England

Services provided

70% Application Testing

5% AI Development

5% Application Management & Support +4

5% Business Consulting

5% Computer Engineering

5% Custom Software Development

5% IT Strategy Consulting

Focus Areas

10% Performance Testing

20% Automation Testing

20% Manual Testing +4

15% Compatibility Testing

15% Reliability Testing

10% Compliance Testing

10% Load Testing

RedQA is an Application Testing company. Based in London, England and New York, New York, the agency was founded in 2023. Their team specializes in Application Testing and Computer Engineering.
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Fortitude 17 Limited

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Accrington, England, England

Services provided

60% Application Testing

20% ERP Consulting and SI

10% DevOps Managed Services +1

10% UX/UI Design

Focus Areas

50% Performance Testing

50% Automation Testing

Fortitude 17 Limited is a small Application Testing company. Founded in 2017, the team focuses on Application Testing and ERP consulting and SI.
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ClicTest

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

City of London, England

Services provided

100% Application Testing

Focus Areas

50% Performance Testing

50% Automation Testing

ClicTest is an Application Testing company. Their small team is headquartered in City of London, England and offers Application Testing. The firm was established in 2013.
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nFocus Testing

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Telford, Shropshire, England

Services provided

40% Application Testing

20% DevOps Managed Services

20% IT Strategy Consulting +1

20% IoT Development

Focus Areas

30% Performance Testing

40% Automation Testing

30% Load Testing

NFocus Testing, an Application Testing company, was established in 2000. The agency offers Application Testing and IT strategy consulting, and is midsize.
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BEE Incorporations

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

London, England

Services provided

100% Application Testing

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

Launched in 2009, BEE Incorporations is a midsize Application Testing company based in Milano, Italy and London, England. Their team offers Application Testing.
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London, England

3 The Shrubberies George Lane, South Woodford
London, England E18 1BD
1

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Creative Computing Solutions

Not yet reviewed

$1,000+

$200 - $300 / hr

10 - 49

Burnham, England

Services provided

15% Application Testing

25% ERP Consulting and SI

20% Application Management & Support +4

10% AI Consulting

10% Custom Software Development

10% Other IT Consulting and SI

10% Web Design

Focus Areas

20% Performance Testing

65% Beta Testing

15% Compatibility Testing

Creative Computing Solutions is an ERP consulting and SI company. They were established in 1990, and their services include ERP consulting and SI and Application Management & Support.
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Assured Thought

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

London, England

Services provided

70% Application Testing

30% IT Strategy Consulting

Focus Areas

30% Performance Testing

70% Automation Testing

Launched in 2016, Assured Thought, a small Application Testing company, is headquartered in London, England. Their team focuses on Application Testing and IT strategy consulting.
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Insead Tech

Not yet reviewed

Undisclosed

Undisclosed

250 - 999

London, England

Services provided

10% Application Testing

40% E-Commerce Development

20% ERP Consulting and SI +2

20% Web Development

10% Social Media Marketing

Focus Areas

100% Performance Testing

Insead Tech is a midsize e-commerce development company based in London, England. The team focuses on E-Commerce Development and ERP consulting and SI.
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Genisys Group

Not yet reviewed

Undisclosed

Undisclosed

1,000 - 9,999

London, England

Services provided

10% Application Testing

10% AI Development

10% Application Management & Support +7

10% Call Center Services

10% Cloud Consulting & SI

10% Computer Engineering

10% IT Managed Services

10% IT Strategy Consulting

10% Robotics Process Automation

10% UX/UI Design

Focus Areas

20% Performance Testing

40% Automation Testing

20% Load Testing +1

20% Stress Testing

Genisys Group is an user experience company. Based in London, England and Bengaluru, India, the company offers UX/UI Design and IT strategy consulting.
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Moropo QA

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Bristol, England

Services provided

100% Application Testing

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

Moropo QA, an Application Testing company, was founded in 2022. The team provides Application Testing.
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FGB studio

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

London, England

Services provided

100% Application Testing

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

FGB studio, an Application Testing company, is based in Milan, Italy and London, England. Their services include Application Testing.
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London, England

3 The Shrubberies, George Lane, South Woodford
London, England E18 1BD
2 - 5

+44.75545.93399

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Cinq Amis

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

London, England

Services provided

40% Application Testing

20% Blockchain Marketing

20% IT Managed Services +1

20% Robotics Process Automation

Focus Areas

30% Performance Testing

40% Automation Testing

30% Manual Testing

Based in London, England, Cinq Amis is an Application Testing company. Their services include Application Testing and IT managed services.
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DeeperThanBlue

Not yet reviewed

$10,000+

$50 - $99 / hr

10 - 49

Sheffield, England

Services provided

10% Application Testing

20% AI Development

20% Cloud Consulting & SI +4

20% E-Commerce Development

10% Custom Software Development

10% Mobile App Development

10% Web Development

Focus Areas

10% Performance Testing

25% Compatibility Testing

25% Stress Testing +4

10% Automation Testing

10% Load Testing

10% Manual Testing

10% Reliability Testing

DeeperThanBlue is a cloud consulting & SI company. They are located in Sheffield, England, and their services include cloud consulting & SI and E-Commerce Development.
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Momin Solutions

Not yet reviewed

$50,000+

$25 - $49 / hr

10 - 49

London, England

Services provided

10% Application Testing

10% BI & Big Data Consulting & SI

10% Cloud Consulting & SI +7

10% Custom Software Development

10% DevOps Managed Services

10% Enterprise App Modernization

10% IT Staff Augmentation

10% Mobile App Development

10% Other Application Development

10% Web Development

Focus Areas

10% Performance Testing

10% Automation Testing

10% Beta Testing +7

10% Compatibility Testing

10% Compliance Testing

10% Load Testing

10% Localization Testing

10% Manual Testing

10% Reliability Testing

10% Stress Testing

Momin Solutions is a business intelligence company founded in 2010. The agency focuses on BI & big data consulting & SI and cloud consulting & SI, and is small.
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Scapa Technologies

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Glasgow, Scotland

Services provided

80% Application Testing

20% IT Strategy Consulting

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

Scapa Technologies is an Application Testing company. The team is based in Dun Laoghaire, Ireland and Glasgow, Scotland, and their services include Application Testing and IT strategy consulting.
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Glasgow, Scotland

48 W George Street, Blythswood New Town
Glasgow, Scotland G2 1BP
1

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Blue Border Limited

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Nelson, England

Services provided

20% Application Testing

20% IT Managed Services

10% Business Consulting +5

10% Cloud Consulting & SI

10% Corporate Training & Coaching

10% ERP Consulting and SI

10% IT Strategy Consulting

10% Market Research

Focus Areas

40% Performance Testing

40% Manual Testing

20% Automation Testing

Blue Border Limited, an IT managed services company, is headquartered in Nelson, England and London, England. Launched in 2015, the team provides IT managed services and Application Testing.
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Aspion

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Liverpool, England

Services provided

30% Application Testing

40% Staffing

30% Recruiting

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

Aspion is a Staffing company. They were launched in 2004, and their services include Staffing and Application Testing.
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SMQA Limited

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Coventry, England

Services provided

15% Application Testing

15% Cybersecurity

15% ERP Consulting and SI +5

15% IT Managed Services

10% Application Management & Support

10% CRM Consulting and SI

10% Corporate Training & Coaching

10% IT Strategy Consulting

Focus Areas

30% Performance Testing

40% Load Testing

30% Stress Testing

SMQA Limited is a small ERP consulting and SI company based in Coventry, England. The team provides ERP consulting and SI and Cybersecurity.
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TR Seeds Ltd

Not yet reviewed

Undisclosed

Undisclosed

Freelancer

London, England, England

Services provided

100% Application Testing

Focus Areas

20% Performance Testing

20% Automation Testing

20% Beta Testing +2

20% Manual Testing

20% Stress Testing

TR Seeds Ltd is an Application Testing company. Established in 2019, their team focuses on Application Testing.
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iOCO UK | iOCO Solutions Limited

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Hertfordshire, England, England

Services provided

20% Application Testing

20% AI Development

20% BI & Big Data Consulting & SI +3

20% Custom Software Development

10% Cloud Consulting & SI

10% Web Design

Focus Areas

20% Performance Testing

20% Compatibility Testing

20% Load Testing +2

20% Localization Testing

20% Manual Testing

IOCO UK | iOCO Solutions Limited is a big data company founded in 2008. Located in Hertfordshire, England, England, the team offers BI & big data consulting & SI and cloud consulting & SI.
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Why Trust Clutch

At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.

Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.

We evaluate service providers using a structured methodology that combines:

In-depth client interviews and ratings
Comprehensive project details
Market presence
Portfolio examples and industry recognition

This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.

Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.

We take fraud seriously. Providers who violate our guidelines may face lower rankings, restricted visibility, or removal from the platform altogether.

Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.

UK Performance Testing FAQs

UK-based teams bring proximity to major data centres (London/UK South), familiarity with UK GDPR and sector rules (FCA, Open Banking, NHS standards), and hands-on experience with British peak events like Black Friday, Boxing Day sales, and live sports streaming. That local context helps agencies build credible non-functional requirements, choose realistic test profiles, and align SLAs with your market.

Moreover, you’ll also find deep expertise across open-source and enterprise toolchains (k6, JMeter, Gatling, LoadRunner) and modern cloud-native stacks. For organizations that need close collaboration, a UK partner can co-locate for war rooms, tune infrastructure in-region, and coordinate with SRE and platform engineering in your time zone.

Pricing varies thanks to a myriad of factors, including scope, tool licenses, environments, and compliance needs. According to Clutch’s recent data, most UK-based performance testing firms charge:

Hourly/day rates: £70 – £150 per hour or £600 – £1,200 per day
Fixed engagements: £15,000 – £80,000+ for discovery, strategy, scripting, and execution of load and stress testing solutions across key journeys
Ongoing optimisation: £5,000 – £25,000+ per month for continuous application performance testing, CI/CD integration, and tuning.

Furthermore, expect separate line items for cloud load infrastructure, APM tooling, and any enterprise license fees.

UK-based consultancies support a wide mix of high-traffic, regulated, and real-time use cases such as:

Financial services and fintech — payments, trading, and Open Banking APIs
E-commerce and retail — peak readiness for promotions and holidays
Media, broadcast, and sports streaming — concurrency and latency at scale
Gaming and entertainment — matchmaking, in-game events, live ops
Healthcare and the public sector — NHS-scale portals, GOV.UK services
Travel, transport, and telecom — ticketing, journey planning, network portals

Many firms also provide website performance testing for editorial, membership, and education platforms.

Define the specific requirements and critical objectives of your project to align the search strategy. Then, browse through Clutch’s directories and assess potential partners on:

Match to your stack — Shortlist partners experienced with your tech.
Tooling and observability — Look for expertise in k6/Gatling/JMeter/LoadRunner plus APM and logs.
Test realism — Confirm they can generate traffic from UK regions, handle test data, and model spikes, soak, and degradation patterns.
Delivery fit — Check if you need onshore-only, hybrid, or managed services; validate their CI/CD integration and reporting cadence.
Proof of impact — Review UK case studies, references in your vertical, and sample reports with clear bottleneck analysis and tuning plans.

Use Clutch filters for budget, location, industry, and “performance testing consultancy UK” focus to quickly narrow the field.

One-size-fits-all scripts with no discovery or baseline
No plan for production-like environments, data, or third-party dependencies
Over-reliance on a single tool without explaining trade-offs
Vague reporting, no root-cause analysis, or no remediation guidance
Hidden costs for licenses or cloud load generators
Guaranteed percentage gains before reviewing your architecture
Ignoring security of test data or UK GDPR obligations
Limited knowledge of load testing services beyond basic concurrency

The UK is home to many exceptional firms, so there’s no need to worry about running out of options. Be objective and meticulous when assessing possible partners for your testing project.

Top Performance Testing Services in the United Kingdom

List of the Top United Kingdom Performance Testing Companies

Reviews mention Patient

Custom Web Platform for Alternative Education Provider

Average Project Cost Breakdown

What Clients Have Said

THEY.dev is very responsive

Reviews mention Adaptable

HR, IT & Accounting Services for Baby & Mother Care Company

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Reviews mention Autonomous

Staff Aug & Design Services for Travel Identification Co

Industry Experience

Select Industry to see insights

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What Clients Have Said

Reviews mention Collaborative

App Testing for Password Management App

Platform QA Support for Sports Education Academy

Performance Testing Experience

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Accommodating

Cybersecurity Services for Vacation Rental Platform

Performance Testing Experience

Average Project Cost Breakdown

What Clients Have Said

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Dedicated

Mobile App & Web Development & Design for Insurance Co

Performance Testing Experience

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Unique expertise

E-Commerce Development for Online Retail Company

Performance & Automation Testing for Beverage Company

Industry Experience

Select Industry to see insights

Educational Platform Dev for Educational Company

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

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List of the Top 10 United Kingdom Performance Testing Companies

UK Performance Testing FAQs

Why hire a UK-based performance testing agency?

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