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Top Reliability Testing Companies in London

Ratings Updated: May 28, 2026
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2 Leaders 13 Contenders

15 Companies

Country: England
City: London
Application Testing Focus: Reliability Testing

List of the Top London Reliability Testing Services

  • Vention Logotype

    4.9 101 reviews
    Premier Verified
    $50,000+
    $50 - $99 / hr
    1,000 - 9,999
    London, England

    Services provided

    10% Application Testing
    10% AI Development
    10% Blockchain +7
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% DevOps Managed Services
    10% Enterprise App Modernization
    10% IT Staff Augmentation
    10% Mobile App Development
    10% Web Development

    Focus Areas

    10% Reliability Testing
    10% Automation Testing
    10% Beta Testing +7
    10% Compatibility Testing
    10% Load Testing
    10% Localization Testing
    10% Manual Testing
    10% Performance Testing
    10% Recovery Testing
    10% Stress Testing

    Vention is a software development company specializing in staff augmentation and quality assurance services, including App QA and Software Quality Assurance. Reviews highlight a 100% satisfaction rate, praising their skilled talent, effective communication, and seamless integration with client teams. Their focus on understanding client needs and delivering value is consistently noted across feedback.

    See all 101 projects

    Reviews mention Trustworthy

    The sentiment regarding iTechArt Group's trustworthiness is overwhelmingly positive. A client noted, "iTechArt Group has changed my mind and earned my trust," highlighting their integrity and commitment to quality. They consistently meet deadlines and manage budgets effectively, further reinforcing their reliability. The client's experience contrasts sharply with previous agencies, emphasizing that iTechArt Group's performance has restored their confidence in development partners.
    • Mobile App & Web Development for Social Media Platform
      5.0 May 1, 2023

      iTechArt Group cares about our project and their performance is great. After a bad experience with a previous development agency, I didn’t trust other companies and wanted to work with two partners in case something went wrong again. iTechArt Group has changed my mind and earned my trust. Our relationship has grown over time, and they’re my only development partner now.

      Read Full Review
    Read All Reviews
    3 of 3 reviews are 5 stars
    $50,000 – $199,999 avg. project cost

    Reviewed 3 times in the past 6 months

    Recent reviews of Vention indicate a strong overall sentiment, highlighting effective project management and responsive communication. Clients appreciated the team's ability to integrate seamlessly as an extension of their own operations, with one client noting the 'genuine partnership' fostered by their account manager. Deliverables were consistently met on time, demonstrating reliability. However, minor communication gaps were mentioned, which were promptly addressed. Overall, Vention is viewed as a reliable partner in software development.
    Read 3 Recent Reviews

    View projects from:

    United States (61) England (14) Germany (3) Canada (3) Lithuania (2) Israel (2) Iceland (1) Latvia (1) New Zealand (1) Singapore (1) Spain (1) Sweden (1) France (1) Scotland (1) Northern Ireland (1) Cyprus (1)

    This provider is fluent in 2 languages:

    • English
    • German

    This provider is available in 5 time zones:

    • Greenwich Mean Time (GMT)
    • Central Standard Time (CST)
    • Eastern Standard Time (EST)
    • Pacific Standard Time (PST)
    • Mountain Standard Time (MST)
    2 of 2 London-based reviews are 5 stars
    $200,000 – $999,999 avg. project cost for Application Testing services in London

    London-based Application 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 more
    Read Similar Reviews
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  • Valor Software Logotype

    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% Reliability Testing
    10% Automation Testing
    10% Beta Testing +7
    10% Compatibility Testing
    10% Compliance Testing
    10% Load Testing
    10% Localization Testing
    10% Manual Testing
    10% Performance Testing
    10% Stress Testing

    Valor 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.

    See all 20 projects

    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 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.
    Read All Reviews

    View projects from:

    United States (6) Canada (3) Sweden (1) United Arab Emirates (1) England (1)

    This provider is fluent in 1 language:

    • English

    London, England

    Hatton Garden,5th Floor, Suite 23
    London, England EC1N

    2 - 5

    See All Locations (9)
    View Profile Visit Website
  • TAREENITY FZE LLC Logotype

    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% Reliability Testing
    20% Automation Testing
    20% Manual Testing +5
    10% Compatibility Testing
    10% Load Testing
    10% Localization Testing
    10% Performance Testing
    10% Stress Testing

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

    Read more

    London, England

    32 Ashford Road, London
    London, England E18 1JZ

    2 - 5

    +923334099330

    See All Locations (3)
    View Profile

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  • Blue Ripples Technologies Logotype

    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% Reliability Testing
    40% Automation Testing
    30% Manual Testing +2
    10% Compliance Testing
    10% Performance 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.

    See all 6 projects
    1 of 1 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

    Custom Software Development for Engineering Company

    5.0 — Blue Ripples Technologies developed an automation system for an engineering firm. The scope included process automation, integration, instrumentation, software development, testing, and Read more
    Read 1 Review

    Average Project Cost Breakdown

    $200,000 to $999,999 (2) $10,000 to $49,000 (1)

    What Clients Have Said

    Clients consistently commend Blue Ripples Technologies for their competitive pricing and strong value for money. Feedback highlights their ability to deliver high-quality solutions within budget, such as a client noting their 'good value for cost' and another emphasizing 'cost control' during project execution. Overall sentiment reflects satisfaction with the balance between cost and quality, suggesting that clients perceive a favorable return on their investment.
    Read All Reviews

    View projects from:

    India (2) Bahrain (1) Malaysia (1)

    London, England

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

    1

    +44

    See All Locations (3)
    View Profile
  • APPNETWISE Logotype

    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

    20% Reliability Testing
    30% Automation Testing
    15% Compatibility Testing +3
    15% Performance 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.

    Read more

    London, England

    Clarence Avenue
    London, England SW4

    2 - 5

    +44 7469882054

    See All Locations (2)
    View Profile
  • RedQA Logotype

    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

    15% Reliability Testing
    20% Automation Testing
    20% Manual Testing +4
    15% Compatibility Testing
    10% Compliance Testing
    10% Load Testing
    10% Performance 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.

    Read more
    View Profile
  • nuclecode Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    2 - 9
    Erith, England

    Services provided

    10% Application Testing
    45% Web Development
    25% Web Design +2
    10% Custom Software Development
    10% Low/No Code Development

    Focus Areas

    20% Reliability Testing
    20% Compatibility Testing
    20% Compliance Testing +2
    20% Manual Testing
    20% Stress Testing

    Nuclecode is a web development company headquartered in Erith, England. Launched in 2023, the team focuses on Web Development and Web Design.

    Read more

    More responsive than most other service providers

    nuclecode is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
    Get in Touch
    View Profile
  • Sparta Global Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    250 - 999
    City of London, England

    Services provided

    20% Application Testing
    10% Corporate Training & Coaching
    10% Custom Software Development +6
    10% Cybersecurity
    10% DevOps Managed Services
    10% Digital Engineering
    10% IT Managed Services
    10% Market Research
    10% Robotics Process Automation

    Focus Areas

    20% Reliability Testing
    60% Manual Testing
    20% Compliance Testing

    Sparta Global, an Application Testing company, was established in 2014. The midsize team specializes in Application Testing and Market Research.

    Read more
    View Profile
  • Codegem Logotype

    4.5 1 review
    $25,000+
    $50 - $99 / hr
    50 - 249
    27 Old Gloucester Street, , England

    Services provided

    15% Application Testing
    30% Custom Software Development
    20% API Development +3
    15% Engineering
    10% E-Commerce Development
    10% IT Staff Augmentation

    Focus Areas

    10% Reliability Testing
    20% Compatibility Testing
    20% Compliance Testing +3
    20% Manual Testing
    20% Stress Testing
    10% Load Testing

    Services Bespoke Software Development Greenfield Software Development Product Development MVP Development Proof of Concept Engineering Team Augmentation Top-Tier Engineers Quality Assurance &

    Read more
    See all 1 projects
    View Profile
  • Momin Solutions Logotype

    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% Reliability Testing
    10% Automation Testing
    10% Beta Testing +7
    10% Compatibility Testing
    10% Compliance Testing
    10% Load Testing
    10% Localization Testing
    10% Manual Testing
    10% Performance 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.

    Read more
    View Profile
  • Razor Risk Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    London, England

    Services provided

    100% Application Testing

    Focus Areas

    10% Reliability Testing
    20% Beta Testing
    20% Recovery Testing +3
    20% Stress Testing
    20% Volume Testing
    10% Compliance Testing

    Razor Risk is an Application Testing company. The team focuses on Application Testing, and the agency is based in Sydney, Australia and London, England.

    Read more

    London, England

    1 Royal Exchange London EC3V 3DG
    London, England EC3V 3LF

    2 - 5

    +44.20.3751.6241

    See All Locations (2)
    View Profile
  • Haley IT Services (LABH UK Ltd) Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Middlesex, England

    Services provided

    10% Application Testing
    10% AI Development
    10% BI & Big Data Consulting & SI +7
    10% Cloud Consulting & SI
    10% Computer Engineering
    10% Custom Software Development
    10% DevOps Managed Services
    10% Mobile App Development
    10% UX/UI Design
    10% Web Development

    Focus Areas

    100% Reliability Testing

    Haley IT Services (LABH UK Ltd), an user experience design company, was launched in 2011. The company offers UX/UI Design and BI & big data consulting & SI, and is small.

    Read more
    View Profile
  • Sadup Softech Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    London, England

    Services provided

    10% Application Testing
    15% UX/UI Design
    15% Web Design +6
    10% Mobile App Development
    10% Search Engine Optimization
    10% Social Media Marketing
    10% Staffing
    10% Video Marketing
    10% Web Development

    Focus Areas

    10% Reliability Testing
    15% Automation Testing
    15% Compliance Testing +5
    15% Manual Testing
    15% Performance Testing
    10% Compatibility Testing
    10% Load Testing
    10% Stress Testing

    Sadup 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 more

    London, England

    124 City Road,
    London, England EC1V 2NX

    2 - 5

    +44 785 784 9999

    See All Locations (3)
    View Profile
  • Propel Tech Ltd Logotype

    Not yet reviewed

    $25,000+
    $100 - $149 / hr
    50 - 249
    Berkhamsted, England

    Services provided

    10% Application Testing
    30% Application Management & Support
    20% Custom Software Development +4
    10% AR/VR Development
    10% Cloud Consulting & SI
    10% Enterprise App Modernization
    10% Web Development

    Focus Areas

    20% Reliability Testing
    25% Manual Testing
    15% Automation Testing +5
    15% Load Testing
    10% Beta Testing
    5% Compatibility Testing
    5% Performance Testing
    5% Stress Testing

    Application Management & Support company Propel Tech Ltd was launched in 2007. The agency offers Application Management & Support and Custom Software Development.

    Read more

    Berkhamsted, England

    The Stables, South Wing, Ashlyns Hall
    Berkhamsted, England HP4 2ST

    6 - 9

    01727 537627

    See All Locations (2)
    View Profile
  • Spirent Communications Logotype

    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

    30% Reliability Testing
    35% Automation Testing
    35% Performance 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.

    Read more

    Crawley, England

    Origin One 108 High Street,
    Crawley, England RH10 1BD

    201 - 250

    See All Locations (4)
    View Profile

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1 Vention
2 Valor Software

List of the Top 2 London Reliability Testing Services

  1. Vention Logotype

    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
    10% Reliability Testing
    90% Other
    View Profile Visit Website
  2. Valor Software Logotype

    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
    10% Reliability Testing
    90% Other
    View Profile Visit Website
  3. TAREENITY FZE LLC Logotype

    TAREENITY FZE LLC

    $5,000+
    < $25 / hr
    10 - 49
    London, England

    Ability to deliver

    8.7/40.0
    0/20 Reviews
    4.2/10 Clients & Experience
    4.6/10 Market Presence

    Service focus

    60% Application Testing
    10% Reliability Testing
    40% Other
    View Profile Visit Website
  4. Blue Ripples Technologies Logotype

    Blue Ripples Technologies

    Undisclosed
    < $25 / hr
    10 - 49
    London, England

    Ability to deliver

    31/40.0
    15.8/20 Reviews
    10/10 Clients & Experience
    5.2/10 Market Presence

    Service focus

    10% Application Testing
    10% Reliability Testing
    90% Other
    View Profile Visit Website
  5. APPNETWISE Logotype

    APPNETWISE

    $25,000+
    $25 - $49 / hr
    10 - 49
    London, England

    Ability to deliver

    6.7/40.0
    0/20 Reviews
    2.7/10 Clients & Experience
    4/10 Market Presence

    Service focus

    20% Application Testing
    20% Reliability Testing
    80% Other
    View Profile Visit Website
  6. RedQA Logotype

    RedQA

    $5,000+
    $25 - $49 / hr
    2 - 9
    London, England

    Ability to deliver

    4/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4/10 Market Presence

    Service focus

    70% Application Testing
    15% Reliability Testing
    30% Other
    View Profile Visit Website
  7. nuclecode Logotype

    nuclecode

    $1,000+
    $25 - $49 / hr
    2 - 9
    Erith, England

    Ability to deliver

    5.3/40.0
    0/20 Reviews
    0.7/10 Clients & Experience
    4.6/10 Market Presence

    Service focus

    10% Application Testing
    20% Reliability Testing
    90% Other
    View Profile Visit Website
  8. Sparta Global Logotype

    Sparta Global

    Undisclosed
    Undisclosed
    250 - 999
    City of London, England

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    20% Application Testing
    20% Reliability Testing
    80% Other
    View Profile Visit Website
  9. Codegem Logotype

    Codegem

    $25,000+
    $50 - $99 / hr
    50 - 249
    27 Old Gloucester Street, , England

    Ability to deliver

    4/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4/10 Market Presence

    Service focus

    15% Application Testing
    10% Reliability Testing
    85% Other
    View Profile Visit Website
  10. Momin Solutions Logotype

    Momin Solutions

    $50,000+
    $25 - $49 / hr
    10 - 49
    London, England

    Ability to deliver

    4.6/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4.6/10 Market Presence

    Service focus

    10% Application Testing
    10% Reliability Testing
    90% Other
    View Profile Visit Website
  11. Razor Risk Logotype

    Razor Risk

    Undisclosed
    Undisclosed
    10 - 49
    London, England

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    100% Application Testing
    10% Reliability Testing
    View Profile Visit Website
  12. Haley IT Services (LABH UK Ltd) Logotype

    Haley IT Services (LABH UK Ltd)

    Undisclosed
    Undisclosed
    2 - 9
    Middlesex, England

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    10% Application Testing
    100% Reliability Testing
    90% Other
    View Profile Visit Website
  13. Sadup Softech Logotype

    Sadup Softech

    Undisclosed
    Undisclosed
    50 - 249
    London, England

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    10% Application Testing
    10% Reliability Testing
    90% Other
    View Profile Visit Website
  14. Propel Tech Ltd Logotype

    Propel Tech Ltd

    $25,000+
    $100 - $149 / hr
    50 - 249
    Berkhamsted, England

    Ability to deliver

    13.8/40.0
    0/20 Reviews
    5.9/10 Clients & Experience
    8/10 Market Presence

    Service focus

    10% Application Testing
    20% Reliability Testing
    90% Other
    View Profile Visit Website
  15. Spirent Communications Logotype

    Spirent Communications

    Undisclosed
    Undisclosed
    1,000 - 9,999
    Crawley, England

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    25% Application Testing
    30% Reliability Testing
    75% Other
    View Profile Visit Website

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Specialties

Compatibility Testing IoT Testing Recovery Testing Acceptance Testing Sanity Testing Unit Testing Regression Testing Manual Testing Compliance Testing

Nearby Locations

Reliability Testing in Southampton
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