Top Performance Testing Services in the United Kingdom
49 Companies
List of the Top United Kingdom Performance Testing Companies
Sponsored
-
Vention
Premier VerifiedLook for Verified Providers
Clutch conducts a rigorous verification process, confirming a provider’s business registration, legal history, credit background, and client feedback to be legitimate, so you can trust their ability to deliver. Learn More
$50,000+$50 - $99 / hr1,000 - 9,999London, EnglandServices provided
10% Application Testing10% AI Development10% Blockchain +710% Cloud Consulting & SI10% Custom Software Development10% DevOps Managed Services10% Enterprise App Modernization10% IT Staff Augmentation10% Mobile App Development10% Web DevelopmentFocus Areas
10% Performance Testing10% Automation Testing10% Beta Testing +710% Compatibility Testing10% Load Testing10% Localization Testing10% Manual Testing10% Recovery Testing10% Reliability Testing10% Stress TestingSee all 98 projectsVention is a versatile software development company specializing in Application Quality Assurance and staff augmentation services. Client feedback highlights their impressive communication, high skill level, and significant contributions to operational efficiency and cost savings. Approximately 100% of reviewers commend their collaborative nature and responsiveness, while some mention relatively high QA rates.
Reviews mention Reliable
The overall sentiment regarding Vention's reliability is highly positive. Clients consistently highlight their efficiency and timely delivery. One VP noted their project management as 'efficient and reliable,' emphasizing their adaptability to urgent requests. A COO praised their consistent communication and reliability, stating, 'When we needed something, we got it.' Additionally, a former owner remarked on their ability to complete projects on time with rare delays, reinforcing their reputation for dependable performance.-
Web Services, Software, & API Dev for Business Scaler Co
5.0 Sep 27, 2024The reliability of the quality of work and punctuality of deliveries from the Vention team members have been consistently maintained. This includes meeting project milestones on time, adhering to specifications, and ensuring deliverables meet the expected standards. Vention team's attention to detail, commitment to deadlines, and proactive communication ensured smooth collaboration and high-quality output.
Read Full Review -
Custom Software Development for PR Firm
5.0 Aug 6, 2024Always on time, quick/efficient with communication and reliable. When we needed something we got it. Ryan and Dina have blown us away with their commitment and understanding of our vision and company. The entire dev team is great.
Read Full Review -
App Dev for Digital Histopathology Company
5.0 Jun 28, 2023I wholeheartedly recommend their services to anyone seeking a team of top-tier professionals who are dedicated, reliable, and immensely talented. Overall, our experience with Vention has been nothing short of exceptional. Their team of contractors consistently met and surpassed our expectations, delivering outstanding results and contributing significantly to our growth.
Read Full Review -
Full-scope API Development for Applied Physics Company
5.0 Mar 11, 2020Everything was completed on time and any delays and downtime were very rare. I was really impressed by that, previously thinking this was unachievable. I’ve been burned by outsourced groups before, but I can always count on them to get the job done right. They created an extremely robust, complicated project reliably.
Read Full Review -
Frontend Development for AI Software Company
5.0 Jul 29, 2018The developer assigned to us has been doing a great job understanding our needs and developing a quality product. Their reliability, responsiveness, high level of organization, and the value they provide. I can't think of anything.
Read Full Review
Was this helpful?
0 of 1 reviews is 5 starsUnknown avg. project costRead 1 Recent ReviewReviewed 1 time in the past 6 months
In the last six months, Vention has received positive feedback for their quality of engineers and responsiveness. A client highlighted their success in staffing AI engineers quickly, noting that sprint goals were consistently met, with no areas for improvement identified. The engagement has been ongoing since July 2024, with the client expressing satisfaction with the performance of the Vention team in delivering on project requirements.Was this helpful?
4 of 5 Application Testing reviews are 5 stars1 new review for Application Testing in past 6 months$200,000 – $999,999 avg. project costRead 5 ReviewsApplication Testing PROJECT HIGHLIGHT
Design, Dev & QA Staff Aug for Language Learning Platform
5.0 — Vention provides staff augmentation services for a language learning platform. The team offers mobile, web, and backend engineers, a UX designer, and a QA engineer to work on the client's platforms. Read moreWas this helpful?
See All Locations (8)London, England
30 Churchill Place
London, England E14 5RE10 - 15
44 207 117 2842
Was this helpful?
-
-
$5,000+$25 - $49 / hr10 - 49London, England
Services provided
10% Application Testing40% Custom Software Development30% UX/UI Design +210% IT Strategy Consulting10% Mobile App DevelopmentFocus Areas
10% Performance Testing50% Manual Testing30% Automation Testing +110% Load TestingSee all 31 projectsTHEY.dev is a versatile web development company offering services like landing page design, scalable platform development, and IT strategy consulting. Across multiple reviews, they have been praised for their high-quality work, budget-friendly pricing, and strong cultural alignment, with 90% of reviews highlighting their excellent communication and adaptability. While feedback is overwhelmingly positive, one client noted the importance of more accurate budget estimation.
Reviews mention Adaptable
Client feedback highlights TH-EY's adaptability throughout the project, noting their flexibility in adjusting team size and composition to meet evolving needs. The team demonstrated their ability to manage a significant scope effectively, delivering results within a tight timeframe. Clients appreciated their proactive approach in suggesting product improvements, ensuring the final output exceeded initial expectations. Overall, the sentiment reflects a strong endorsement of TH-EY's adaptability and collaborative spirit, contributing positively to project success.-
Website Revamp & UI/UX Design for Fundraising Platform
5.0 Nov 28, 2024Given the size of the scope the team was very flexible and able to adapt quickly through daily and weekly meetings. They were able to flex the size and make up of the team depending on our needs (e.g. more testers or front end devs depending on requirements every sprint). This allowed us to keep costs low while maintaining the ideal team for our needs.
Read Full Review
Was this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Clients consistently praised the company's cost-effectiveness and value for money, with many citing their competitive pricing and alignment with project budgets. One client noted, "TH-EY provided good value for cost," while another emphasized that their "pricing fit our budget." Overall sentiment reflects satisfaction with the balance between quality and affordability, with several reviews highlighting the transparent and responsive nature of their project management, ensuring that deliverables met expectations within agreed financial parameters.Was this helpful?
More responsive than most other service providers
Get in TouchTHEY.dev is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.Was this helpful?
View projects from:
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)
Was this helpful?
-
-
$10,000+$50 - $99 / hr50 - 249London, England
Services provided
10% Application Testing10% Application Management & Support10% Custom Software Development +710% Enterprise App Modernization10% IT Staff Augmentation10% IT Strategy Consulting10% Mobile App Development10% UX/UI Design10% Web Design10% Web DevelopmentFocus Areas
10% Performance Testing10% Automation Testing10% Beta Testing +710% Compatibility Testing10% Compliance Testing10% Load Testing10% Localization Testing10% Manual Testing10% Reliability Testing10% Stress TestingSee all 20 projectsValor Software is a versatile software development company specializing in creating innovative, scalable solutions for diverse client projects, from mobile applications to complex backend systems. The company consistently receives positive client feedback, with 100% of reviews praising their technical expertise, project management, and ability to deliver on time. Clients particularly commend Valor Software for their creative problem-solving and dedication to client success.
Industry Experience
Valor Software has demonstrated expertise across various industries, notably Information Technology, Healthcare, eCommerce, Software, Engineering, Wellness & Fitness, and Financial Services. Clients praised their creativity, technical proficiency, and project management, with particular strengths in cloud migration, user interface design, and data pipeline optimization. Overall sentiment is highly positive, indicating Valor's capacity to deliver tailored solutions that enhance user experiences and operational efficiency, making them a suitable partner for diverse project needs.
Read All ReviewsSelect Industry to see insights
Information technology Healthcare eCommerce Software Engineering Other industries Transportation Wellness & Fitness Advertising & marketing IT Services Financial servicesWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Valor Software has received positive feedback regarding their cost and value for money, with multiple clients highlighting that their pricing aligns well with budget constraints while delivering high-quality outcomes. For example, one client noted, 'Pricing fit our budget' and 'Good value for cost.' Another stated, 'They are affordable, which is very good.' Overall, clients appreciate the balance of quality and cost-effectiveness, with many expressing satisfaction over the return on investment from their projects.Was this helpful?
See All Locations (9)London, England
Hatton Garden,5th Floor, Suite 23
London, England EC1N2 - 5
Was this helpful?
-
UndisclosedUndisclosed1,000 - 9,999London, England
Services provided
100% Application TestingFocus Areas
25% Performance Testing25% Load Testing20% Automation Testing +220% Compatibility Testing10% Manual TestingLaunched in 1997, Qualitest Group is a large Santa Clara, California-based Application Testing company. Their team offers Application Testing.
Read moreSee All Locations (6)London, England
Level 2, Equitable House 47 King William Street
London, England EC4R 9AF1001 - 2000
Was this helpful?
-
$10,000+$25 - $49 / hr50 - 249London, England
Services provided
100% Application TestingFocus Areas
20% Performance Testing40% Automation Testing20% Manual Testing +210% Compatibility Testing10% Load TestingSee all 17 projectsTestFort QA Lab is a distinguished company specializing in QA Testing and Software Quality Assurance services, particularly recognized for its App Testing and Software Validation capabilities. With overwhelmingly positive feedback, approximately 85% of clients commend their structured QA processes, attention to detail, and proactive project management. Clients highlight their adaptability and expertise in complex environments, making them a reliable partner for enhancing software quality.
Reviews mention Communicative
The reviews indicate a strong sentiment regarding TestFort QA Lab's communicative approach. Clients highlighted their clear and timely communication, adaptability to project needs, and professional management. For instance, one client noted, "communication was clear, and they were highly responsive to our evolving priorities," while another emphasized, "their level of communication sets them apart." Overall, clients expressed satisfaction with the collaboration and the effectiveness of communication throughout their projects.-
QA Testing Services for Software Developers
5.0 Mar 1, 2021Our collaboration was very effective, and communication with the TestFort team was very clear. We organized our work on the project following the Scrum methodology. The QA team from TestFort followed it as well. They also reported the results of their work on a weekly basis. Communication was organized with the use of email, Slack, and Zoom.
Read Full Review -
UI/UX Design & Web Dev for Consulting & Innovation Company
5.0 Jan 19, 2021For this project we had regular interactions. We had calls at the beginning and at the end. In between, I had my personal Skype chat with direct contact to the developer and designer. I could always ask or provide feedback and received a response within minutes. That was excellent.
Read Full Review -
Staff Augmentation for Full-Cycle Development Company
5.0 Nov 3, 2020The project was managed on our side, and we followed agile principles. Their engineers worked remotely, but we had regular meetups and sprint sessions. That helped us to address current tasks and plan the next phases of development and testing. Their level of communication sets them apart.
Read Full Review -
QA Team Augmentation for Development Company
4.5 Oct 3, 2019We’ve had no problems. While we oversee most of the project management, they sufficiently manage their own workload. They’re flexible to work with, and they communicate really well. The difference in time zone can be a challenge, but we’ve been able to work around it. We utilize Slack and Google Hangouts to communicate.
Read Full Review -
Testing Services for B2B SaaS Company
5.0 Feb 17, 2026TestFort managed the project very professionally. All tasks were delivered on time, communication was clear, and they were highly responsive to our evolving priorities. The team adapted quickly to our release schedule and worked seamlessly with our internal team.
Read Full Review
Was this helpful?
5 of 5 Performance Testing reviews are 5 stars3 new reviews for Performance Testing in past 6 monthsLess than $10,000 avg. project costPerformance Testing Experience
TestFort QA Lab has received overwhelmingly positive feedback for its Performance Testing services, with 100% of clients reporting satisfaction. Key strengths include expertise in automated and manual testing, leading to measurable outcomes such as a 40% reduction in production bugs and improved stability for high user loads. Clients highlighted the team's responsiveness and adaptability to project needs, particularly in fast-paced environments. All reviewers noted effective communication and project management, with no significant areas for improvement identified.
Read Most Recent ReviewWas this helpful?
9 of 11 Application Testing reviews are 5 stars5 new reviews for Application Testing in past 6 months$10,000 – $49,000 avg. project costRead 11 ReviewsApplication Testing PROJECT HIGHLIGHT
Application Testing for Video-Based Social Platform
5.0 — TestFort QA Lab provided QA testing services for a video-based social platform. The team conducted crowdtesting sessions to validate the performance, usability, and functionality of the client's Read moreWas this helpful?
Industry Experience
TestFort QA Lab has received positive feedback across various industries, notably Information Technology, Advertising & Marketing, Financial Services, and Robotics. Clients commend their expertise in QA processes, particularly in SaaS applications and mobile platforms. Common strengths include proactive communication, thorough testing approaches, and a deep understanding of client needs. Overall sentiment reflects high satisfaction, indicating TestFort as a suitable partner for businesses seeking reliable QA support in technology-driven environments.
Read All ReviewsSelect Industry to see insights
Advertising & marketing IT Services Software Financial services Consulting Information technology Other industries Business servicesWas this helpful?
-
-
$1,000+< $25 / hr1,000 - 9,999London, England
Services provided
50% Application Testing50% IT Staff AugmentationFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual TestingSee all 4 projectsQualimatrix 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.
3 of 3 Application Testing reviews are 5 stars$50,000 – $199,999 avg. project costRead 3 ReviewsApplication Testing PROJECT HIGHLIGHT
Web Release Testing for FinTech Company
5.0 — Qualimatrix Technologies Pvt Ltd provided testing services for a fintech company's website releases. The team created a test strategy that combined automatic test series to improve the quality of Read moreWas this helpful?
Industry Experience
Qualimatrix Technologies Pvt Ltd has demonstrated expertise primarily in the Financial Services and IT Services sectors. In Financial Services, they improved website quality and reduced issues by up to 35% post-release. In IT Services, they excelled in performance, security, and functional testing, leading to enhanced software quality and customer satisfaction. Overall, the sentiment is highly positive, highlighting their strong communication, project management, and ability to deliver tailored solutions, making them a suitable partner for clients in fintech and IT-related projects.
Read All ReviewsSelect Industry to see insights
Financial services IT ServicesWas this helpful?
View projects from:
Was this helpful?
See All Locations (4)London, England
Grays Inn Road
London, England WC1X8BP101 - 150
Was this helpful?
-
Undisclosed< $25 / hr10 - 49London, England
Services provided
10% Application Testing40% Custom Software Development25% IoT Development +215% Digital Engineering10% Microservices Architecture ServicesFocus Areas
10% Performance Testing40% Automation Testing30% Manual Testing +210% Compliance Testing10% Reliability TestingSee all 6 projectsBlue 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.
Reviews mention Experienced
Clients have expressed a high level of satisfaction with Blue Ripples Technologies, particularly noting their expertise and experience in automation systems. One client highlighted the company's flexibility in managing cross-functional teams and meeting project deadlines, even during challenging circumstances like the Covid pandemic. Overall, the sentiment regarding their experience is overwhelmingly positive, with specific praise for the timely delivery and effective project management throughout the development process.-
Custom Software Dev for Product Development Company
4.5 Aug 5, 2024Managed a cross-functional team of software developers and control system experts in developing the product. The team has shown flexibility to the needs of different project phases for its completion and it has taken up testing and getting acceptance of the system at our client premises during the peak Covid times. We were impressed by their expertise and experience with the development of automation systems and software.
Read Full Review
Was this helpful?
Industry Experience
Blue Ripples Technologies has demonstrated strong expertise across multiple industries, including Design, Insurance, Software, Energy & Natural Resources, and IT Services. Clients commend their technical proficiency, customer-centric approach, and effective project management. In Design, they improved battery testing efficiency; in Insurance, they successfully developed a complex mobile app for insurance sales; in Software, they created a comprehensive UI ecosystem; and in Energy, they provided automation solutions. Overall sentiment is highly positive, with clients noting their adaptability and commitment to co-creation.
Read All ReviewsSelect Industry to see insights
Design Insurance Software Energy & natural resources IT ServicesWas this helpful?
View projects from:
Was this helpful?
See All Locations (3)London, England
Greenside House, 50 Station Rd, Wood Green
London, England N22 7TP1
+44
Was this helpful?
-
-
$5,000+$25 - $49 / hr2 - 9Keynsham, England
Services provided
100% Application TestingFocus Areas
25% Performance Testing25% Automation Testing25% Compatibility Testing +125% Manual TestingSee all 1 projectsTestology.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.
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.
Read All ReviewsSelect Industry to see insights
HealthcareWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat 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.Was this helpful?
-
$75,000+$50 - $99 / hr250 - 999London, England
Services provided
40% Application Testing20% Application Management & Support20% IT Managed Services +210% IT Staff Augmentation10% IT Strategy ConsultingFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual TestingSee all 5 projectsTestinium is a distinguished company specializing in Software Testing and Application Quality Assurance services. Their robust automation tools have been praised for enhancing testing efficiency, resulting in a significant reduction in technical bugs and customer complaints. Notably, 100% of reviews highlight their responsive customer service and technical competency, and 67% mention their valuable QA testing resources, making them a preferred partner in Turkey's technology sector.
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, 2021What 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.
Read Full Review
Was this helpful?
1 of 3 Application Testing reviews are 5 stars$200,000 – $999,999 avg. project costRead 3 ReviewsApplication 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 moreWas this helpful?
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.
Read All ReviewsSelect Industry to see insights
Food & Beverages IT Services Retail Information technologyWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Clients generally express satisfaction with Testinium's pricing, often highlighting its competitive edge over international alternatives. One e-commerce company noted superior pricing for similar functionalities, while another client invested $1.5 million, reflecting a significant commitment to their services. Overall, feedback indicates that Testinium delivers good value for money, particularly through effective project management and impactful testing solutions, which have led to measurable improvements in performance and a reduction in issues.Was this helpful?
-
-
$5,000+< $25 / hr10 - 49Woking, England
Services provided
50% Application Testing50% IT Staff AugmentationFocus Areas
10% Performance Testing50% Automation Testing40% Manual TestingSee all 1 projectsTesting 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.
1 of 1 Application Testing reviews are 5 starsLess than $10,000 avg. project costRead 1 ReviewApplication 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 moreWas this helpful?
Industry Experience
Testing Frameworks Limited has received positive feedback primarily from the education sector, particularly for their work with innovative platforms integrating AI, Blockchain, and spatial computing. Clients noted their exceptional teamwork, timely deliveries, and thorough understanding of complex project requirements. The overall sentiment is highly favorable, highlighting the company's strengths in enhancing educational infrastructures, making them a suitable partner for clients within the education industry.
Read All ReviewsSelect Industry to see insights
EducationWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Clients generally perceive Testing Frameworks Limited as offering strong value for money, with one CEO noting that their pricing was a good fit for the budget. The company is praised for delivering quality outcomes on time, which enhances the overall value. Additionally, the attention to understanding project complexities further underscores the favorable sentiment regarding their cost-effectiveness and commitment to client satisfaction.Was this helpful?
-
UndisclosedUndisclosed1,000 - 9,999Reading, England
Services provided
50% Application Testing10% AI Development10% Cloud Consulting & SI +310% DevOps Managed Services10% ERP Consulting and SI10% IT Strategy ConsultingFocus Areas
50% Performance Testing50% Automation TestingPlanit Testing is an Application Testing company. They were established in 1997, and their services include Application Testing and IT strategy consulting.
Read moreSee All Locations (4)Reading, England
Thames Tower, Level 2, Station Rd
Reading, England RG1 1LX151 - 200
+44.203.868.3948
Was this helpful?
-
$5,000+< $25 / hr10 - 49London, England
Services provided
60% Application Testing20% Application Management & Support20% DevOps Managed ServicesFocus Areas
10% Performance Testing20% Automation Testing20% Manual Testing +510% Compatibility Testing10% Load Testing10% Localization Testing10% Reliability Testing10% Stress TestingLaunched in 2013, TAREENITY FZE LLC is an Application Testing company. Their team provides Application Testing and Application Management & Support.
Read moreSee All Locations (3)London, England
32 Ashford Road, London
London, England E18 1JZ2 - 5
+923334099330
Was this helpful?
-
$10,000+$25 - $49 / hr50 - 249London, England
Services provided
100% Application TestingFocus Areas
20% Performance Testing80% Automation TestingEstablished in 2016, ClicQA is a midsize Application Testing company. Their services include Application Testing.
Read moreSee All Locations (2)London, England
32 Willoughby Road
London, England N8 0JG31 - 40
+44 208 090 2404
Was this helpful?
-
UndisclosedUndisclosed10 - 49London, England
Services provided
80% Application Testing10% Custom Software Development10% Web DevelopmentFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual Testing360logica Software Testing Services is a Noida, India-based Application Testing company. The team provides Application Testing and Custom Software Development.
Read moreSee All Locations (5)London, England
Suite 560 No 28 Old Brompton Rd., Kensington
London, England SW7 3SS+44 800 098
Was this helpful?
-
UndisclosedUndisclosed50 - 249LE5 4LE, England
Services provided
50% Application Testing30% DevOps Managed Services20% Computer EngineeringFocus Areas
50% Performance Testing50% Automation TestingInfuse Consulting is a midsize Application Testing company. They focus on Application Testing and DevOps Managed Services and were founded in 2002.
Read more -
UndisclosedUndisclosed50 - 249London, England
Services provided
70% Application Testing30% IT Managed ServicesFocus Areas
50% Performance Testing50% Automation TestingInspired Testing is a London, England-based Application Testing company. They specialize in Application Testing and IT managed services and were established in 2018.
Read more -
UndisclosedUndisclosed1,000 - 9,999London, England
Services provided
50% Application Testing10% AI Consulting10% Business Consulting +310% Cloud Consulting & SI10% Computer Engineering10% ERP Consulting and SIFocus Areas
30% Performance Testing40% Automation Testing30% Load TestingTricentis 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.
Read moreSee All Locations (5)London, England
6th Floor, 80 Cheapside
London, England EC2V 6EE50 - 75
44.844.807.9905
Was this helpful?
-
UndisclosedUndisclosed1,000 - 9,999Crawley, England
Services provided
25% Application Testing25% Business Consulting25% Cybersecurity +125% IT Managed ServicesFocus Areas
35% Performance Testing35% Automation Testing30% Reliability TestingSpirent Communications is a Cybersecurity company in San Jose, California and Beijing, China. They offer Cybersecurity and IT managed services and were launched in 1936.
Read moreSee All Locations (4)Crawley, England
Origin One 108 High Street,
Crawley, England RH10 1BD201 - 250
Was this helpful?
-
UndisclosedUndisclosed50 - 249Basildon, England
Services provided
100% Application TestingFocus Areas
20% Performance Testing20% Automation Testing20% Compatibility Testing +220% Manual Testing20% Recovery TestingTesting Minds is an Application Testing company launched in 2018. The company provides Application Testing.
Read more -
UndisclosedUndisclosed250 - 999Birmingham, England
Services provided
50% Application Testing30% Computer Engineering20% CybersecurityFocus Areas
30% Performance Testing30% Compatibility Testing20% Automation Testing +120% Reliability TestingResillion, an Application Testing company, was launched in 2022. The midsize team focuses on Application Testing and Computer Engineering.
Read more -
UndisclosedUndisclosed250 - 999London, England
Services provided
30% Application Testing15% AI Development15% Computer Engineering +410% Business Continuity Management10% Cloud Consulting & SI10% DevOps Managed Services10% IT Strategy ConsultingFocus Areas
30% Performance Testing40% Automation Testing30% Compatibility TestingTen10 Group is a midsize Application Testing company. Founded in 2004, the team provides Application Testing and Artificial Intelligence.
Read more -
$5,000+Undisclosed2 - 9London, England
Services provided
100% Application TestingFocus Areas
15% Performance Testing20% Automation Testing20% Localization Testing +315% Compatibility Testing15% Compliance Testing15% Manual TestingMtest Labs is an Application Testing company. They were launched in 2011, and their services include Application Testing.
Read more -
UndisclosedUndisclosed250 - 999London, England
Services provided
100% Application TestingFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual TestingLocated in North Sydney, Australia and London, England, iLAB is an Application Testing company. They offer Application Testing.
Read moreSee All Locations (3)London, England
Brook House, 10 Church Terrace, Richmond Upon Thames
London, England TW10 6SE1
Was this helpful?
-
UndisclosedUndisclosed250 - 999London, England
Services provided
20% Application Testing20% AI Consulting20% BI & Big Data Consulting & SI +220% Cloud Consulting & SI20% DevOps Managed ServicesFocus Areas
60% Performance Testing40% Automation TestingSollers Consulting, a big data analytics company, offer BI & big data consulting & SI and cloud consulting & SI. They were founded in 2000.
Read moreSee All Locations (10)London, England
14 Cullum Street, EC3M 7J
London, England EC3M 7JJ2 - 5
Was this helpful?
-
UndisclosedUndisclosed50 - 249Nether Poppleton, England
Services provided
70% Application Testing30% UX/UI DesignFocus Areas
30% Performance Testing40% Automation Testing30% Load TestingEstablished 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.
Read more -
UndisclosedUndisclosed50 - 249Edinburgh, Scotland
Services provided
100% Application TestingFocus Areas
30% Performance Testing70% Automation Testing2i Testing is a midsize Edinburgh, Scotland-based Application Testing company. Their services include Application Testing.
Read more -
$25,000+$25 - $49 / hr10 - 49London, England
Services provided
20% Application Testing20% Cloud Consulting & SI20% Custom Software Development +220% IT Staff Augmentation20% IT Strategy ConsultingFocus Areas
15% Performance Testing30% Automation Testing20% Reliability Testing +315% Compatibility Testing10% Manual Testing10% Recovery TestingAPPNETWISE is a Hyderabad, India-based IT strategy consulting company. They specialize in IT strategy consulting and cloud consulting & SI and were launched in 2022.
Read moreSee All Locations (2)London, England
Clarence Avenue
London, England SW42 - 5
+44 7469882054
Was this helpful?
-
$10,000+$50 - $99 / hr2 - 9London, England
Services provided
100% Application TestingFocus Areas
10% Performance Testing40% Automation Testing20% Compliance Testing +220% Manual Testing10% Compatibility TestingIQspeaks L is an Application Testing company. Launched in 2015, the company is based in London, England. Their team specializes in Application Testing.
Read more -
UndisclosedUndisclosed2 - 9Accrington, England, England
Services provided
60% Application Testing20% ERP Consulting and SI10% DevOps Managed Services +110% UX/UI DesignFocus Areas
50% Performance Testing50% Automation TestingFortitude 17 Limited is a small Application Testing company. Founded in 2017, the team focuses on Application Testing and ERP consulting and SI.
Read more -
UndisclosedUndisclosed2 - 9City of London, England
Services provided
100% Application TestingFocus Areas
50% Performance Testing50% Automation TestingClicTest 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.
Read more -
UndisclosedUndisclosed50 - 249Telford, Shropshire, England
Services provided
40% Application Testing20% DevOps Managed Services20% IT Strategy Consulting +120% IoT DevelopmentFocus Areas
30% Performance Testing40% Automation Testing30% Load TestingNFocus Testing, an Application Testing company, was established in 2000. The agency offers Application Testing and IT strategy consulting, and is midsize.
Read more -
UndisclosedUndisclosed50 - 249London, England
Services provided
100% Application TestingFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual TestingLaunched in 2009, BEE Incorporations is a midsize Application Testing company based in Milano, Italy and London, England. Their team offers Application Testing.
Read moreSee All Locations (2)London, England
3 The Shrubberies George Lane, South Woodford
London, England E18 1BD1
Was this helpful?
-
$1,000+$200 - $300 / hr10 - 49Burnham, England
Services provided
15% Application Testing25% ERP Consulting and SI20% Application Management & Support +410% AI Consulting10% Custom Software Development10% Other IT Consulting and SI10% Web DesignFocus Areas
20% Performance Testing65% Beta Testing15% Compatibility TestingCreative 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.
Read more -
UndisclosedUndisclosed10 - 49London, England
Services provided
70% Application Testing30% IT Strategy ConsultingFocus Areas
30% Performance Testing70% Automation TestingLaunched in 2016, Assured Thought, a small Application Testing company, is headquartered in London, England. Their team focuses on Application Testing and IT strategy consulting.
Read more -
UndisclosedUndisclosed250 - 999London, England
Services provided
10% Application Testing40% E-Commerce Development20% ERP Consulting and SI +220% Web Development10% Social Media MarketingFocus Areas
100% Performance TestingInsead Tech is a midsize e-commerce development company based in London, England. The team focuses on E-Commerce Development and ERP consulting and SI.
Read more -
UndisclosedUndisclosed1,000 - 9,999London, England
Services provided
10% Application Testing10% AI Development10% Application Management & Support +710% Call Center Services10% Cloud Consulting & SI10% Computer Engineering10% IT Managed Services10% IT Strategy Consulting10% Robotics Process Automation10% UX/UI DesignFocus Areas
20% Performance Testing40% Automation Testing20% Load Testing +120% Stress TestingGenisys Group is an user experience company. Based in London, England and Bengaluru, India, the company offers UX/UI Design and IT strategy consulting.
Read more -
UndisclosedUndisclosed10 - 49Bristol, England
Services provided
100% Application TestingFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual TestingMoropo QA, an Application Testing company, was founded in 2022. The team provides Application Testing.
Read more -
UndisclosedUndisclosed10 - 49London, England
Services provided
100% Application TestingFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual TestingFGB studio, an Application Testing company, is based in Milan, Italy and London, England. Their services include Application Testing.
Read moreSee All Locations (2)London, England
3 The Shrubberies, George Lane, South Woodford
London, England E18 1BD2 - 5
+44.75545.93399
Was this helpful?
-
UndisclosedUndisclosed10 - 49London, England
Services provided
40% Application Testing20% Blockchain Marketing20% IT Managed Services +120% Robotics Process AutomationFocus Areas
30% Performance Testing40% Automation Testing30% Manual TestingBased in London, England, Cinq Amis is an Application Testing company. Their services include Application Testing and IT managed services.
Read more -
$10,000+$50 - $99 / hr10 - 49Sheffield, England
Services provided
10% Application Testing20% AI Development20% Cloud Consulting & SI +420% E-Commerce Development10% Custom Software Development10% Mobile App Development10% Web DevelopmentFocus Areas
10% Performance Testing25% Compatibility Testing25% Stress Testing +410% Automation Testing10% Load Testing10% Manual Testing10% Reliability TestingDeeperThanBlue is a cloud consulting & SI company. They are located in Sheffield, England, and their services include cloud consulting & SI and E-Commerce Development.
Read more -
$50,000+$25 - $49 / hr10 - 49London, England
Services provided
10% Application Testing10% BI & Big Data Consulting & SI10% Cloud Consulting & SI +710% Custom Software Development10% DevOps Managed Services10% Enterprise App Modernization10% IT Staff Augmentation10% Mobile App Development10% Other Application Development10% Web DevelopmentFocus Areas
10% Performance Testing10% Automation Testing10% Beta Testing +710% Compatibility Testing10% Compliance Testing10% Load Testing10% Localization Testing10% Manual Testing10% Reliability Testing10% Stress TestingMomin 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.
Read more -
UndisclosedUndisclosed2 - 9Glasgow, Scotland
Services provided
80% Application Testing20% IT Strategy ConsultingFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual TestingScapa 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.
Read moreSee All Locations (2)Glasgow, Scotland
48 W George Street, Blythswood New Town
Glasgow, Scotland G2 1BP1
Was this helpful?
-
UndisclosedUndisclosed2 - 9Nelson, England
Services provided
20% Application Testing20% IT Managed Services10% Business Consulting +510% Cloud Consulting & SI10% Corporate Training & Coaching10% ERP Consulting and SI10% IT Strategy Consulting10% Market ResearchFocus Areas
40% Performance Testing40% Manual Testing20% Automation TestingBlue 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.
Read more -
UndisclosedUndisclosed10 - 49Liverpool, England
Services provided
30% Application Testing40% Staffing30% RecruitingFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual TestingAspion is a Staffing company. They were launched in 2004, and their services include Staffing and Application Testing.
Read more -
UndisclosedUndisclosed10 - 49Coventry, England
Services provided
15% Application Testing15% Cybersecurity15% ERP Consulting and SI +515% IT Managed Services10% Application Management & Support10% CRM Consulting and SI10% Corporate Training & Coaching10% IT Strategy ConsultingFocus Areas
30% Performance Testing40% Load Testing30% Stress TestingSMQA Limited is a small ERP consulting and SI company based in Coventry, England. The team provides ERP consulting and SI and Cybersecurity.
Read more -
UndisclosedUndisclosedFreelancerLondon, England, England
Services provided
100% Application TestingFocus Areas
20% Performance Testing20% Automation Testing20% Beta Testing +220% Manual Testing20% Stress TestingTR Seeds Ltd is an Application Testing company. Established in 2019, their team focuses on Application Testing.
Read more -
UndisclosedUndisclosed10 - 49Hertfordshire, England, England
Services provided
20% Application Testing20% AI Development20% BI & Big Data Consulting & SI +320% Custom Software Development10% Cloud Consulting & SI10% Web DesignFocus Areas
20% Performance Testing20% Compatibility Testing20% Load Testing +220% Localization Testing20% Manual TestingIOCO 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.
Read more -
UndisclosedUndisclosed2 - 9London, England
Services provided
20% Application Testing20% AI Development20% Cybersecurity +220% DevOps Managed Services20% Robotics Process AutomationFocus Areas
20% Performance Testing20% Automation Testing20% Load Testing +220% Manual Testing20% Stress TestingLocated in London, England, TestPro Consulting Ltd is a small Cybersecurity company. Their services include Cybersecurity and Artificial Intelligence.
Read more -
UndisclosedUndisclosed50 - 249London, England
Services provided
10% Application Testing15% UX/UI Design15% Web Design +610% Mobile App Development10% Search Engine Optimization10% Social Media Marketing10% Staffing10% Video Marketing10% Web DevelopmentFocus Areas
15% Performance Testing15% Automation Testing15% Compliance Testing +515% Manual Testing10% Compatibility Testing10% Load Testing10% Reliability Testing10% Stress TestingSadup Softech, a web design company, was established in 2019. The team provides Web Design and UX/UI Design and is headquartered in Duluth, Georgia and Hyderabad, India.
Read moreSee All Locations (3)London, England
124 City Road,
London, England EC1V 2NX2 - 5
+44 785 784 9999
Was this helpful?
Share your project goals, and we’ll connect you with verified partners who fit your budget and timeline.
Get My MatchesTell us what you need — we’ll match you with top agencies in minutes.
Get My MatchesWhy 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.
Rollover to see company insights or click a company below for more details.
A Clutch Leaders Matrix provides a broad view of the top-performing companies in a particular service or location. Each company featured in a Leaders Matrix is evaluated based on Focus and Ability to Deliver. The size of each circle indicates that company’s size.
By using verified reviews, focused service details, and real project data, the Leaders Matrix highlights companies that consistently deliver and stand out from the rest. Each company’s position is based on how well they focus on a service area and how consistently they deliver results, helping you make informed, confident decisions. Learn More
Focus (x-axis)
Focus accounts for a company’s specialization within a certain service.
Ability to Deliver (y-axis)
Ability to Deliver considers three criteria:
- Client feedback and reviews
- Work experience and previous projects
- Market presence and reputation in the industry
List of the Top 9 United Kingdom Performance Testing Companies
-
$50,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
$10,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
33.4/40.018.2/20 Reviews8.7/10 Clients & Experience6.5/10 Market PresenceService focus
100% Application Testing20% Performance Testing -
$10,000+$50 - $99 / hr50 - 249London, England
Ability to deliver
38.4/40.018.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
$5,000+$25 - $49 / hr10 - 49London, England
Ability to deliver
34.8/40.018.2/20 Reviews10/10 Clients & Experience6.6/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
$1,000+< $25 / hr1,000 - 9,999London, England
Ability to deliver
21.5/40.016.6/20 Reviews0/10 Clients & Experience4.9/10 Market PresenceService focus
50% Application Testing20% Performance Testing50% Other -
Undisclosed< $25 / hr10 - 49London, England
Ability to deliver
31/40.015.8/20 Reviews10/10 Clients & Experience5.2/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
$5,000+$25 - $49 / hr2 - 9Keynsham, England
Ability to deliver
24.2/40.016.2/20 Reviews2.4/10 Clients & Experience5.6/10 Market PresenceService focus
100% Application Testing25% Performance Testing -
$75,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
20.5/40.015.2/20 Reviews0/10 Clients & Experience5.3/10 Market PresenceService focus
40% Application Testing20% Performance Testing60% Other -
$5,000+< $25 / hr10 - 49Woking, England
Ability to deliver
23/40.016.2/20 Reviews2.8/10 Clients & Experience4/10 Market PresenceService focus
50% Application Testing10% Performance Testing50% Other -
UndisclosedUndisclosed1,000 - 9,999London, England
Ability to deliver
9.7/40.00/20 Reviews1.2/10 Clients & Experience8.5/10 Market PresenceService focus
100% Application Testing25% Performance Testing -
UndisclosedUndisclosed1,000 - 9,999Reading, England
Ability to deliver
5.7/40.00/20 Reviews0/10 Clients & Experience5.7/10 Market PresenceService focus
50% Application Testing50% Performance Testing50% Other -
$5,000+< $25 / hr10 - 49London, England
Ability to deliver
8.7/40.00/20 Reviews4.2/10 Clients & Experience4.6/10 Market PresenceService focus
60% Application Testing10% Performance Testing40% Other -
$10,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
5.8/40.00/20 Reviews0.6/10 Clients & Experience5.2/10 Market PresenceService focus
100% Application Testing20% Performance Testing -
UndisclosedUndisclosed10 - 49London, England
Ability to deliver
5.8/40.00/20 Reviews0/10 Clients & Experience5.8/10 Market PresenceService focus
80% Application Testing20% Performance Testing20% Other -
UndisclosedUndisclosed50 - 249LE5 4LE, England
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
50% Application Testing50% Performance Testing50% Other -
UndisclosedUndisclosed50 - 249London, England
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
70% Application Testing50% Performance Testing30% Other -
UndisclosedUndisclosed1,000 - 9,999London, England
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
50% Application Testing30% Performance Testing50% Other -
UndisclosedUndisclosed1,000 - 9,999Crawley, England
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
25% Application Testing35% Performance Testing75% Other -
UndisclosedUndisclosed50 - 249Basildon, England
Ability to deliver
4/40.00/20 Reviews0/10 Clients & Experience4/10 Market PresenceService focus
100% Application Testing20% Performance Testing -
UndisclosedUndisclosed250 - 999Birmingham, England
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
50% Application Testing30% Performance Testing50% Other -
UndisclosedUndisclosed250 - 999London, England
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
30% Application Testing30% Performance Testing70% Other -
$5,000+Undisclosed2 - 9London, England
Ability to deliver
4.6/40.00/20 Reviews0/10 Clients & Experience4.6/10 Market PresenceService focus
100% Application Testing15% Performance Testing -
UndisclosedUndisclosed250 - 999London, England
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
100% Application Testing20% Performance Testing -
UndisclosedUndisclosed250 - 999London, England
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
20% Application Testing60% Performance Testing80% Other
Get personalized agency matches based on your project goals.