Top Software Testing Companies in London

Ratings Updated: August 4, 2026

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15 Leaders 15 Contenders

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204 Companies

Country: England

City: London

List of the Top London QA Testers

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Featured

What are Featured Providers?
Simform

4.8 86 reviews

Premier Verified

$25,000+

$25 - $49 / hr

1,000 - 9,999

Serves London, England

Services provided

20% AI Development

20% Cloud Consulting & SI

10% CRM Consulting and SI +5 services

10% Custom Software Development

10% E-Commerce Development

10% ERP Consulting and SI

10% Enterprise App Modernization

10% Mobile App Development

Simform is a software development and testing company that offers services including Application Quality Assurance and QA Testing. Across multiple reviews, clients commend Simform for their excellent project management, timely delivery, and effective communication. Approximately 100% of reviewers highlight their responsiveness and commitment, while around 20% suggest minor areas for improvement. Their technical expertise and alignment with client values consistently earn them high praise.

See all 86 projects
Reviews mention Exceptional results
Clients have expressed exceptional satisfaction with Simform's ability to deliver high-quality mobile applications, highlighting their effective use of Agile methodologies and strong communication. One client noted the impressive adaptability and technical proficiency of the team, stating, 'They always find cutting-edge solutions and help bring our ideas to life.' The end product received positive feedback from users, demonstrating reliability and functionality, confirming Simform's capability to meet and exceed project expectations.

Web Dev & Database Management for Data Analytics Company

5.0 Jul 7, 2022

Thanks to Simform's work, we've been able to get new products and features launched. I can be very demanding, with aggressive timelines to launch things. Simform has been incredibly gracious and responsive and has sometimes put in overtime to make sure they help us with critical items for my business. They provide an amazing, excellent, responsive service, launching new products and fixing issues.
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Web Dev & Database Management for Data Analytics Company

5.0 Jul 7, 2022

The team cares about the project as if this were their business, too. This commitment is one of the biggest reasons I have invested so much with them and will continue to do so; they deliver and build what I want them to; they iterate with me; they fix things really quickly if there are bugs. In fact, they have a 100% success rate when addressing crashes or errors.
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Web Dev & Database Management for Data Analytics Company

5.0 Jul 7, 2022

Moreover, the team delivers on time and within budget. If there's any potential increase in the estimated time or cost, they communicate early on so that I can decide whether to proceed or do something differently.
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Web Dev & Database Management for Data Analytics Company

5.0 Jul 7, 2022

I've been operating my business for five years now, and Simform is above anyone else I've worked with in terms of professionalism, ability to deliver, responsiveness, and high-quality products. They just hit every single mark I'm looking for.
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Mobile App Dev for Fitness Platform

5.0 Sep 24, 2020

The end product has been extremely well-received by our customer base, and it had generated lots of positive reviews. Our app functions well and is reliable. Pre-existing issues were handled well and the app is in a good working state.
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Industry Experience

Simform has garnered positive feedback across various industries, showcasing expertise in Education, Hospitality, Information Technology, and Financial Services. Reviews emphasize their strengths in project management, timely delivery, and responsiveness, leading to successful outcomes. Clients appreciate their ability to align with organizational needs, enhance user experiences, and develop scalable solutions. Overall, Simform is well-suited for clients in sectors prioritizing technical development, user-centric designs, and strategic collaboration.
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Utilities eCommerce Logistics & Supply Chain Wellness & Fitness Agriculture Human Resources Media Other industries Consulting Construction Legal Gaming Food & Beverages Other Industry Consumer Products Software Business services Arts, entertainment & music Education Real estate Nonprofit Financial services Fitness Information technology Hospitality & leisure Advertising & marketing IT Services Healthcare

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Average Project Cost Breakdown

$50,000 to $199,999 (21) $10,000 to $49,000 (16) $200,000 to $999,999 (14) Less than $10,000 (1)

What Clients Have Said
Clients consistently praise Simform for their exceptional cost-effectiveness and value for money. Many reviews highlight that their pricing aligns well with client budgets while delivering high-quality outcomes. For instance, one client noted that Simform's pricing fit their budget and provided good value for the cost. Another remarked on their ability to deliver projects within agreed timelines and budgets, emphasizing transparency and lack of hidden costs. Overall, the sentiment reflects satisfaction with the balance of cost and quality in Simform's services.
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1 of 1 London-based review is 5 stars

Unknown avg. project cost for Application Testing services in London

London-based Application Testing project highlight

Staff Augmentation for E-Commerce Marketing Platform
5.0 — Simform provides ongoing staff augmentation for an e-commerce marketing company. They help expand the internal team's technical operation and offer necessary management resources. Read more
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QualityLogic

4.9 32 reviews

Premier Verified

$5,000+

$25 - $49 / hr

50 - 249

Serves London, England

Services provided

100% Application Testing

QualityLogic is a reputable company specializing in Software Quality Assurance and Testing Services, including App Testing and QA Testing. According to client reviews, QualityLogic is praised for their excellent communication and detailed documentation, with approximately 90% of responses highlighting their professional project management and adherence to budget. Clients frequently commend their flexibility and the successful implementation of testing protocols, underscoring QualityLogic's ability to enhance software quality and mitigate risks effectively.

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Reviews mention Efficient
QualityLogic has received consistently positive feedback regarding their efficiency in project execution. Clients have noted that QualityLogic provides significantly more output compared to other vendors, with one client stating they deliver '10x the amount of work.' Their project management is praised for effective communication and resource mindfulness, ensuring that changes are made only with approval. Overall, clients emphasize QualityLogic's ability to enhance testing coverage and improve processes, reflecting a strong sentiment of satisfaction with their efficiency.

App Testing & QA Services for Women’s Health Company

5.0 Apr 29, 2022

QualityLogic is highly efficient in their testing work. They put a lot of effort, and compared to the other quality testing vendors we’ve had, QualityLogic provides 10x the amount of work as other teams. Their project management is excellent. They communicate relevant things to us and don’t spam us with unnecessary details.
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1 of 1 reviews is 5 stars

$50,000 – $199,999 avg. project cost

Reviewed 1 time in the past 6 months
Over the past six months, client feedback for QualityLogic reflects a strong positive sentiment, highlighting their effective support in achieving ADA compliance. A notable review from a Whatcom County Government specialist praised QualityLogic for their thorough audit and training, emphasizing their ability to articulate both the 'HOW' and 'WHY' of compliance, which facilitated widespread adoption of accessibility practices. While minor improvements in training scripting were suggested, the overall responsiveness and timely delivery of services were commended.
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Industry Experience

QualityLogic has demonstrated expertise in various industries including government, healthcare, IT, advertising, and education. Client feedback highlights their strengths in ensuring ADA compliance, enhancing software functionality through rigorous testing, and delivering quality assurance for complex applications. Overall sentiment is positive, particularly in government and healthcare sectors, where their responsive communication and thorough testing processes significantly improve compliance and user experience. Organizations seeking robust quality assurance and compliance solutions would benefit from QualityLogic’s proven track record.
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Advertising & marketing Software Healthcare Information technology Legal Education Other Industry Arts, entertainment & music Consulting Transportation Financial services Media IT Services Government Business services

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United States (26) Canada (1) Singapore (1) Spain (1)

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BetterQA

4.9 64 reviews

Premier Verified

$5,000+

Undisclosed

50 - 249

Serves London, England

Services provided

80% Application Testing

10% Application Management & Support

10% Other IT Consulting and SI

BetterQA is a dedicated software testing company that offers services like App Testing, QA Testing, and Software Quality Assurance. Across reviews, 100% of clients commend their strong understanding of business contexts and tailored QA solutions, resulting in improved software quality and reduced defect rates. Clients appreciate their timely delivery and seamless integration with internal teams, highlighting BetterQA's commitment to practical outcomes and client-focused service.

See all 64 projects

Industry Experience

BetterQA has demonstrated expertise across multiple industries including construction, real estate, banking, and eCommerce. Reviews highlight their strengths in delivering tailored QA solutions, improving operational efficiency, and enhancing software reliability. The overall sentiment is positive, with clients appreciating timely project management, strong communication, and the ability to adapt to unique industry needs. Companies in sectors such as fintech, media, and logistics particularly benefit from their comprehensive testing methodologies and proactive approach, making BetterQA a suitable partner for a wide range of projects.
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Real estate Healthcare Construction Human Resources Financial services Media Software Fitness Consulting Food & Beverages Chemicals & Biotechnology Logistics & Supply Chain Engineering Wellness & Fitness Banks eCommerce Retail Other Industry Information technology IT Services Advertising & marketing

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View projects from:

United States (18) Romania (8) England (4) Germany (4) Switzerland (3) France (2) Kenya (1) Belgium (1) Russia (1) Singapore (1) Sweden (1) India (1) United Arab Emirates (1) Hong Kong (1) Canada (1)

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$4,500 Startups, Small Teams $7,500 Growing Businesses $9,000 Enterprises, Complex

BetterQA Independent Testing Solutions
Independent testing that tells you what's actually broken, not what you want to hear. We bridge the gap between developers who build it and business teams who sell it. Bottom line: we make sure your releases work so you can sleep at night.
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ItsRevolution

Not yet reviewed

$25,000+

$25 - $49 / hr

10 - 49

Erith, England

Services provided

12% Application Testing

52% Mobile App Development

24% UX/UI Design +1 service

12% Application Management & Support

ItsRevolution is a mobile application development firm. They were launched in 2016, and their services include Mobile App Development and UX/UI Design.
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Archnix Pvt Ltd

Not yet reviewed

$10,000+

$25 - $49 / hr

10 - 49

London, England

Services provided

10% Application Testing

30% Custom Software Development

15% Mobile App Development +5 services

15% Web Development

10% Application Management & Support

10% E-Commerce Development

5% AR/VR Development

5% Blockchain

Archnix Pvt Ltd is a software development firm launched in 2020. Based in London, England and Colombo, Sri Lanka, the team provides Custom Software Development and Web Development.
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What are Featured Providers?

QAlified

4.9 21 reviews

Verified

Undisclosed

$25 - $49 / hr

10 - 49

Serves London, England

Services provided

100% Application Testing

QAlified is a distinguished software testing company specializing in Application Quality Assurance, Software QA, and Testing Services. With 100% positive feedback across reviews, clients commend their reliability, precision, and effective project management. Notably, 85% of reviewers highlight their excellent communication and adaptability, while 70% appreciate the alignment with company values and culture.

See all 21 projects

1 of 1 reviews is 5 stars

1 new review for Application Testing services

Unknown avg. project cost

Reviewed 1 time in the past 6 months
Recent reviews indicate a highly positive sentiment towards QAlified, particularly regarding their quality assurance services. Clients highlighted the company's effective communication, adaptability, and thorough testing processes, which led to improved site stability and fewer production issues. Notably, one client praised their transparency and cultural alignment, stating that QAlified felt like an extension of their internal team. Suggestions for improvement included exploring test automation earlier in projects, reflecting a desire for continued evolution rather than criticism.
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14 of 15 Application Testing reviews are 5 stars

1 new review for Application Testing in past 6 months

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

App Testing for Content Creation Platform
5.0 — QAlified provides ongoing app testing and automation services for a content creation platform. The team builds and maintains test cases and documents test case failures. Read more
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Industry Experience

QAlified has demonstrated expertise across various industries, notably in healthcare, media, technology, and manufacturing. Clients commend their rigorous QA processes, effective communication, and the ability to deliver quality results on time. In healthcare, they excelled in performance and usability testing, while in media and technology, they showcased strong capabilities in security audits and automated testing. Overall, feedback reflects positive sentiment and a strong alignment of values, making QAlified a suitable partner for organizations seeking reliable QA services.
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Information technology Advertising & marketing Media Software Manufacturing Education Government Retail IT Services

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Average Project Cost Breakdown

Less than $10,000 (3) $10,000 to $49,000 (3) $50,000 to $199,999 (3) $200,000 to $999,999 (2) $1,000,000 to $9,999,999 (1)

What Clients Have Said
Clients consistently highlight QAlified's competitive pricing and excellent value for money. Feedback from multiple reviews indicates that the pricing fits budgets while delivering high-quality services. For instance, one client noted, 'Good value for cost,' while another emphasized that QAlified's services allowed for a '25% to 35% reduction in bugs.' Overall, clients express satisfaction with the financial investment relative to the quality and effectiveness of the outcomes achieved.
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SearchPilot

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

London, England

Services provided

30% Application Testing

70% Search Engine Optimization

Small SEO company SearchPilot, is headquartered in London, England. The team focuses on Search Engine Optimization and Application Testing.
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Ab Ovo, Inc.

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Harrow on the Hill, England

Services provided

20% Application Testing

20% BI & Big Data Consulting & SI

20% IoT Development +2 services

20% Mobile App Development

20% UX/UI Design

UX company Ab Ovo, Inc. Was founded in 2006. The agency offers UX/UI Design and BI & big data consulting & SI.
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Harrow on the Hill, England

Ground Floor Office Cervantes House, 5-9 Headstone Road
Harrow on the Hill, England HA1 1PD

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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

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Ability to deliver

Focus

Proven

Market Leaders

Emerging

Niche

Clutch Leaders Matrix

Rollover to see company insights or click a company below for more details.

1 DeviQA

2 TestFort QA Lab

3 a1qa

4 Vention

5 BreachLock Inc

6 Valor Software

7 Robosoft Technologies Inc.

8 Stingrai Inc.

9 THEY.dev

10 intive

11 Qualimatrix Technologies Pvt Ltd

12 Go Live Test

13 Kernelics

14 Testinium

15 Testdel UK Ltd.

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 15 London QA Testers

DeviQA

$5,000+

$25 - $49 / hr

250 - 999

London, England

Ability to deliver

38.2/40.0

18.6/20 Reviews

10/10 Clients & Experience

9.6/10 Market Presence

Service focus

100% Application Testing

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TestFort QA Lab

$10,000+

$25 - $49 / hr

50 - 249

London, England

Ability to deliver

34.2/40.0

19/20 Reviews

8.7/10 Clients & Experience

6.5/10 Market Presence

Service focus

100% Application Testing

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a1qa

$10,000+

$25 - $49 / hr

250 - 999

London, England

Ability to deliver

30.5/40.0

16.4/20 Reviews

6.7/10 Clients & Experience

7.4/10 Market Presence

Service focus

80% Application Testing

20% Other

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Vention

$50,000+

$50 - $99 / hr

1,000 - 9,999

London, England

Ability to deliver

39.8/40.0

20/20 Reviews

10/10 Clients & Experience

9.8/10 Market Presence

Service focus

10% Application Testing

90% Other

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BreachLock Inc

Undisclosed

Undisclosed

50 - 249

London, England

Ability to deliver

32.4/40.0

16.2/20 Reviews

6.5/10 Clients & Experience

9.7/10 Market Presence

Service focus

55% Application Testing

45% Other

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Valor Software

$10,000+

$50 - $99 / hr

50 - 249

London, England

Ability to deliver

38.4/40.0

18.6/20 Reviews

10/10 Clients & Experience

9.8/10 Market Presence

Service focus

10% Application Testing

90% Other

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Robosoft Technologies Inc.

$25,000+

$50 - $99 / hr

250 - 999

London, England

Ability to deliver

36/40.0

16.2/20 Reviews

10/10 Clients & Experience

9.8/10 Market Presence

Service focus

10% Application Testing

90% Other

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Stingrai Inc.

$1,000+

Undisclosed

10 - 49

London, England

Ability to deliver

31.3/40.0

18/20 Reviews

6.2/10 Clients & Experience

7/10 Market Presence

Service focus

45% Application Testing

55% Other

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THEY.dev

$5,000+

$25 - $49 / hr

10 - 49

London, England

Ability to deliver

34.8/40.0

18.2/20 Reviews

10/10 Clients & Experience

6.6/10 Market Presence

Service focus

10% Application Testing

90% Other

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intive

Undisclosed

$50 - $99 / hr

1,000 - 9,999

London, England

Ability to deliver

28.4/40.0

14/20 Reviews

8.5/10 Clients & Experience

5.9/10 Market Presence

Service focus

20% Application Testing

80% Other

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Qualimatrix Technologies Pvt Ltd

$1,000+

< $25 / hr

1,000 - 9,999

London, England

Ability to deliver

21.3/40.0

16.4/20 Reviews

0/10 Clients & Experience

4.9/10 Market Presence

Service focus

50% Application Testing

50% Other

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Go Live Test

Undisclosed

$50 - $99 / hr

10 - 49

London, England

Ability to deliver

21.1/40.0

16.2/20 Reviews

0/10 Clients & Experience

4.9/10 Market Presence

Service focus

80% Application Testing

20% Other

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Kernelics

$10,000+

$25 - $49 / hr

50 - 249

London, England

Ability to deliver

31.7/40.0

16.8/20 Reviews

10/10 Clients & Experience

4.9/10 Market Presence

Service focus

10% Application Testing

90% Other

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Testinium

$75,000+

$50 - $99 / hr

250 - 999

London, England

Ability to deliver

20.5/40.0

15.2/20 Reviews

0/10 Clients & Experience

5.3/10 Market Presence

Service focus

40% Application Testing

60% Other

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Testdel UK Ltd.

$5,000+

< $25 / hr

2 - 9

Harrow, England

Ability to deliver

23.5/40.0

16.2/20 Reviews

2.4/10 Clients & Experience

4.9/10 Market Presence

Service focus

60% Application Testing

40% Other

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Borne Digital

$25,000+

$50 - $99 / hr

10 - 49

London, England

Ability to deliver

29.6/40.0

15.8/20 Reviews

8.5/10 Clients & Experience

5.3/10 Market Presence

Service focus

10% Application Testing

90% Other

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Devbox Technologies

$10,000+

$25 - $49 / hr

50 - 249

London, England

Ability to deliver

25.7/40.0

16.4/20 Reviews

4.4/10 Clients & Experience

4.9/10 Market Presence

Service focus

10% Application Testing

90% Other

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inCode Systems

$10,000+

$25 - $49 / hr

2 - 9

London, England

Ability to deliver

26.2/40.0

16.2/20 Reviews

4.9/10 Clients & Experience

5.2/10 Market Presence

Service focus

10% Application Testing

90% Other

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INVINCIX Solutions Private Limited

$10,000+

$25 - $49 / hr

50 - 249

Twickenham, England

Ability to deliver

25.7/40.0

16/20 Reviews

4.5/10 Clients & Experience

5.2/10 Market Presence

Service focus

10% Application Testing

90% Other

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Room 8 Group

Undisclosed

Undisclosed

1,000 - 9,999

London, England

Ability to deliver

19.5/40.0

0/20 Reviews

10/10 Clients & Experience

9.5/10 Market Presence

Service focus

20% Application Testing

80% Other

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Pixie Labs

$25,000+

$150 - $199 / hr

2 - 9

London, England

Ability to deliver

26/40.0

16.6/20 Reviews

4/10 Clients & Experience

5.3/10 Market Presence

Service focus

10% Application Testing

90% Other

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Vector Software Ltd

$50,000+

$25 - $49 / hr

50 - 249

London, England

Ability to deliver

24.6/40.0

15.6/20 Reviews

3.7/10 Clients & Experience

5.3/10 Market Presence

Service focus

10% Application Testing

90% Other

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Unibrix

$10,000+

$25 - $49 / hr

50 - 249

London, England

Ability to deliver

24.1/40.0

18.6/20 Reviews

0.6/10 Clients & Experience

4.9/10 Market Presence

Service focus

10% Application Testing

90% Other

View Profile Visit Website
Plexteq

$10,000+

$25 - $49 / hr

50 - 249

London, England

Ability to deliver

23.7/40.0

16.6/20 Reviews

1.4/10 Clients & Experience

5.7/10 Market Presence

Service focus

10% Application Testing

90% Other

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Ruvca Consulting

$5,000+

$50 - $99 / hr

2 - 9

Dartford, England

Ability to deliver

22/40.0

16.2/20 Reviews

1.2/10 Clients & Experience

4.6/10 Market Presence

Service focus

20% Application Testing

80% Other

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The ASO.co

$5,000+

Undisclosed

10 - 49

London, England

Ability to deliver

21.4/40.0

16.2/20 Reviews

0/10 Clients & Experience

5.2/10 Market Presence

Service focus

20% Application Testing

80% Other

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O'Dwyer Software

$10,000+

$100 - $149 / hr

2 - 9

London, England

Ability to deliver

22.5/40.0

14.6/20 Reviews

3/10 Clients & Experience

4.9/10 Market Presence

Service focus

15% Application Testing

85% Other

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Urolime Technologies

$5,000+

$25 - $49 / hr

50 - 249

London, England

Ability to deliver

22.3/40.0

17/20 Reviews

0/10 Clients & Experience

5.3/10 Market Presence

Service focus

10% Application Testing

90% Other

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Pixelpk Technologies

$5,000+

$25 - $49 / hr

10 - 49

London, England

Ability to deliver

22.6/40.0

15.8/20 Reviews

1.9/10 Clients & Experience

4.9/10 Market Presence

Service focus

10% Application Testing

90% Other

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Component Product Foundry

$5,000+

Undisclosed

2 - 9

London, England

Ability to deliver

22.6/40.0

16.2/20 Reviews

2.4/10 Clients & Experience

4/10 Market Presence

Service focus

10% Application Testing

90% Other

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Specialties

Load Testing Installation Testing Compliance Testing Beta Testing Acceptance Testing Volume Testing Localization Testing Performance Testing Integration Testing

Nearby Locations

Software Testing in Brighton Software Testing in Southampton

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Top Software Testing Companies in London

List of the Top London QA Testers

Reviews mention Exceptional results

Web Dev & Database Management for Data Analytics Company

Web Dev & Database Management for Data Analytics Company

Web Dev & Database Management for Data Analytics Company

Web Dev & Database Management for Data Analytics Company

Mobile App Dev for Fitness Platform

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Staff Augmentation for E-Commerce Marketing Platform

Reviews mention Efficient

App Testing & QA Services for Women’s Health Company

Reviewed 1 time in the past 6 months

Industry Experience

Select Industry to see insights

Industry Experience

Select Industry to see insights

BetterQA Independent Testing Solutions

Reviewed 1 time in the past 6 months

App Testing for Content Creation Platform

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Tell us what you need — we’ll match you with top agencies in minutes.

Why Trust Clutch

List of the Top 15 London QA Testers

Similar Categories

Related Services

Specialties

Nearby Locations