Industry Leaders
Top-right · Both axes ≥ 50
1FIRMS
Strong on both Core Competencies and 360-Performance. These firms have proven track records, deep specialisation, and solid client outcomes. Default recommendation for most buyers.
Top Software Testing Companies in the UK
Goodfirms has reviewed 273 Software Testing Companies in the UK as of September 2026. The top-ranked firm is QA Mentor (5.0 stars, 8 verified reviews, < $25/hr, founded 2010, London). Across the category, the median hourly rate is $37, median client rating is 4.9, and 28% of firms employ 50+ members. Explore the vetted Software Testing Companies in the UK below, compare their strengths, and connect with the provider best suited to your requirements.
Software testing solutions use a variety of testing approaches, like unit testing, integration testing, functional testing, system testing, regression testing, load testing, stress testing, usability testing, and acceptance testing. With the vast number of software testing companies in the UK catering to the needs of national as well as international clients, the task to hire the right testing service provider could be extremely time taking and confusing. To ease your work, the researchers at Goodfirms have critically analyzed every aspect and presented the list of the top testing service provider in the UK.
Goodfirms has verified 273 Software Testing Companies in the UK - part of 5,425+ Software Testing Companies, each passing Goodfirms' 4-step verification process (background check, client interviews, portfolio audit, ongoing quality review). Listings marked "Sponsored" are agencies that pay for premium placement - sponsorship does not affect star ratings or review content.
Top 10 at Glance
Compare the highest-ranked firms first side by side.
Rank
Company
Rating
Reviews
Hourly Rate
Team Size
Founded
Location
Action
List of Best Software Testing Service Provider Companies in the UK
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Founded in 2010, QA Mentor is an ISO-certified, top software testing company having experience of working with 450+ clients globally. The company has a powerful team of 350 QA professionals that has delivered 3000+ projects to date, making them a reliable choice for a wide ... read QA Mentor reviews & insights
< $25/hr250 - 9992010London, United KingdomReliable QA
- Partner
A1qa is an experienced software testing services company that has delivered over 1500+ projects to clients from 39 countries. With over 1100+ specialists onboard, the company excels in full-cycle testing services, quality engineering, and complete test coverage solutions using a combination of top quality engineering ... read a1qa reviews & insights
$25 - $49/hr1,000 - 9,9992003London, United KingdomSoftware testing professionals who helped us get ready for HIPAA certification
- Senior Computational Biologist
Established in 2011, Packetlabs is another leading software testing and consulting company known for uncovering the vulnerabilities that others miss to identify. It is a CREST-certified and SOC 2 Type II-accredited penetration testing company. By leveraging an attacker-modeled approach, the company aims to deliver all ... read Packetlabs reviews & insights
$200 - $300/hr50 - 2492011London, United KingdomPacketlabs always exceeded my expectations for the services they’ve delivered
- Anonymous
Testmatick is an end-to-end software testing company that specializes in delivering comprehensive QA testing solutions to clients from diverse industries. Established in 2009, the company has identified over 1 million bugs. From mobile and web app testing to QA audit, automated, and performance testing, the ... read Testmatick reviews & insights
NA50 - 2492009London, United KingdomComprehensive Software Testing for Web and Mobile Applications
- CEO
Using AI Tools
ChatGPT
Claude
GitHub Copilot
QA Madness is a full-cycle quality engineering provider for digital products, delivering QA audit and strategy, manual testing, test automation, and ongoing quality maintenance. We test web, mobile, desktop, API, accessibility, performance, security, and AI systems for SaaS, FinTech, HealthTech, e-commerce, logistics, and other complex ... read QA Madness reviews & insights
$25 - $49/hr50 - 2492013London, United KingdomAmazing, would recommend! 10/10!
- Product ManagerWhy QA Madness?
- 13 years of QA expertise
- Seamless extension of your team
- Reliable QA with clear communication
Using AI Tools
- ChatGPT
- Claude
Gemini
Perplexity
Krify is a bespoke mobile applications and software services provider based in UK, USA and India. Creating value for our clients is our passion and software technology is our forte. Our core competency includes Mobile App(Android, iOS, and Flutter), Web, Wearable app development and Digital ... read Krify UK Limited reviews & insights
< $25/hr50 - 2492005London, United KingdomAmazing Service!! Thanks Krify.
- OwnerWhy Krify UK Limited?
- Proven expertise & Successful delivery
- Client-first approach & transparency
- High-quality & scalable solutions
We are a service provider company specializing in software quality assurance.To create top-notch solutions that are tailored to our client's individual demands, our team of professionals combines technical know-how with an eye for style.We are a service provider company specializing in software quality assurance. To create top-notch solutions that are tailored to our clients' individual ... read Tatylab Solutions reviews & insights
< $25/hr10 - 492023London, United Kingdom
Using AI Tools
- ChatGPT
- Claude
Cursor
Windsurf- Perplexity
GenSoft is a full-cycle QA agency that helps digital teams ship better products through structured, end-to-end quality assurance. We work with companies that want to strengthen quality, reduce costly production issues, and make releases more predictable.We cover a wide range of testing services depending on ... read GenSoft reviews & insights
$25 - $49/hr10 - 492025London, United KingdomGenSoft ensured our industrial software matched the legendary reliability of our hardware.
- User Experience DesignerWhy GenSoft?
- Automation-first QA partner
- End-to-end testing expertise
- Average project start in 2 days
Using AI Tools
- GitHub Copilot
- ChatGPT
- Cursor
PERSOL CROSS TECHNOLOGY VIETNAM We aim to be an IT company where each and every employee embraces our group culture of “Work and Smile”. By Leveraging technology, we create innovative solutions through the synergy of various cultures & lifestyles and contribute to the growth and ... read Persol Cross Technology Vietnam reviews & insights
< $25/hr50 - 2492013London, United Kingdomknowledgeable & efficiant
- AnonymousWhy Persol Cross Technology Vietnam?
- Backed by PERSOL Group's massive global network.
- Japanese-Grade Quality, Compliance & Governance.
- Skilled, Proactive Team & Clear Communication.
Ajackus is a Mumbai-headquartered engineering firm founded in 2011 that delivers technology solutions for enterprises and growth-stage companies across FinTech, PropTech, Healthcare, and Travel. With 14 years of engineering depth and 300+ solutions delivered globally, Ajackus builds embedded technology teams that understand clients' industries — ... read Ajackus reviews & insights
$25 - $49/hr50 - 2492011Abbeywood, United KingdomAjackus revitalized our mobile application by resolving critical issues and strengthening the product before launch.
- CEOWhy Ajackus?
- Average client engagement spans five years
- Engineers who understand your industry deeply
- 100 percent inhouse engineers, zero subcontracting
Using AI Tools
- GitHub Copilot
- Cursor
Lovable- Perplexity
- Claude
- + 2 More
Gearheart is a product development studio specializing in operational workflow-heavy B2B SaaS platforms — the kind where permissions, data isolation, and workflow logic determine whether the product actually holds up at enterprise scale.We engage at the start of a build, or when a product has ... read Gearheart reviews & insights
$50 - $99/hr10 - 492012London, United KingdomThe best team to work with as a first-time start-up founder!
- FounderWhy Gearheart?
- 14 Years in B2B SaaS
- Senior-Only Team
- Enterprise-Level Expertise
Using AI Tools
- Perfecto
- Postman
- Cursor
- GitHub Copilot
IntegraQA is a UK-based software testing and quality assurance company helping businesses launch reliable, high-performing websites and applications with confidence. We specialise in identifying critical issues before release, ensuring your product delivers a seamless user experience across all devices, browsers, and environments. Our approach combines ... read IntegraQA reviews & insights
$25 - $49/hr2 - 92025Manchester, United KingdomSeamless and overall great experience.
- AnonymousWhy IntegraQA?
- Methodical QA with attention to detail
- Clear reporting with actionable insights
- Reliable testing with a collaborative approach
Softexpoit's team of experts combines technical expertise and creativity to develop custom software, mobile app, and web app solutions that meet your specific business/official needs. We understand that every business is different, which is why we offer customized solutions that are designed to meet your ... read Softexpoit Pvt. Limited reviews & insights
NA10 - 492021London, United KingdomProject evolved brilliantly with Softexpoit's expertise
- Anonymous
Pearl Lemon Web Offers Full Service Website Design And Development. Get a website that’s as unique as your company. No more generic, cookie cutter templates. The Pearl Lemon Web team makes sure they understand a business' brand image, and brand goals, before they begin work ... read Pearl Lemon Web reviews & insights
$100 - $149/hr50 - 2492021London, United KingdomPearl Lemon Web exceeded expectations with a custom inventory management app. Highly recommend!
- Anonymous
AppSynergies is a fast-growing SaaS-based start-up with a very talented and rapidly expanding team. We develop cutting-edge AI-driven Social, FinTech, PropTech & EdTech Apps. We aspire to create a happy and productive workplace for our employees, that embodies respect and transparency in every part of ... read Appsynergies reviews & insights
NA10 - 492019Harrow Weald, United KingdomIt was a smooth journey,they helped bring out the best of our idea and turn it to a live product.
- Founder/CEO
Merged Minds is a software testing service provider, focusing on supporting projects quality assurance using manual and automated test tools.Our experience goes way back to 2006 with the Merged Minds brand founded in 2017.We can support any software projects using our knowledge covering Functional (ad-hoc, ... read Merged Minds reviews & insights
< $25/hr2 - 92017Walton on Thames, United KingdomExcellent team work
- Test Manager - Contractor
TestDel has developed its services for companies wishing to outsource all or a portion of their software quality activities so they may gain testing efficiencies and reduce administrative burdens associated with in-house QA teams. An established and trusted brand with a global presence and network. ... read Testdel UK LTd. reviews & insights
NA50 - 2492016London, United KingdomHealth Care Industry
- Lisa Barnett
Using AI Tools
- Claude
Bladeware builds & fixes healthcare software. We always start with an audit.For health-tech startups that's the tech - security, HIPAA, how production-ready an AI-built app is to handle patient data.For specialty and cash-pay practices - it's operations: where workflows leak time and money. Then we ... read Bladeware reviews & insights
$25 - $49/hr10 - 492018London, United KingdomRoman & the Bladeware team were absolutely incredible. They far exceeded my expectations and delivered incredible designs for the app
- Senior Android DeveloperWhy Bladeware?
- Healthcare focused
- We audit first, then build what's needed
- HIPAA depth - EMRs, portals, telehealth, AI
FortySeven Software Professionals (FSSP) is a European based IT consulting, IT outsourcing and full-cycle software development company. Over a decade FSSP helping clients to scale their business operations from startups to Fortune 500 companies. FortySeven has offices in UK, Spain, Latvia and Poland. FortySeven certified ... read FortySeven Software Professionals reviews & insights
$50 - $99/hr250 - 9992006London, United KingdomSuccesful Financial Software Development
- Key Account Manager
StairwaySoft is a global engineering provider of innovative software development services with a team of expert engineers. We service various businesses internationally to create solutions and help companies achieve their technology goals. We build software solutions through an ever-expanding UNIQUE HYBRID of Eastern European, Middle ... read StairwaySoft reviews & insights
$25 - $49/hr10 - 492012Kington, United KingdomVery good
- VP R&D
We create great mobile and web apps using the latest technologies focused on building elegant and functional products. What sets us apart is our can-do attitude about every project we take up. We are a bright team of 20+ developers, designers, analysts, and QA engineers ... read ESTENX reviews & insights
$50 - $99/hr10 - 492022London, United KingdomEfficient collaboration with a dedicated team ESTENX on the SaaS product Effex.cloud
- Anonymous
We design, build and scale products throughout the entire product lifecycle and specialise in crafting unforgettable digital experiences made to pump your brand to new heights. We Deliver Happiness End-to-End Expertise: Comprehensive support from ideation to scaling, ensuring a seamless product lifecycle. Innovative Design: Creating ... read 3Ace Tech reviews & insights
$25 - $49/hr10 - 492023Birmingham, United KingdomComplete app development from scratch including support and maintenance
- Director
Tiksom, headquartered in Manchester, UK, excels in Digital Transformation, AI/ML Development, and Product Engineering, bringing innovation and expertise to the forefront of every project. With over a decade of experience, we've pioneered bespoke solutions in custom web & mobile applications, leveraging cutting-edge technology. Our track ... read Tiksom reviews & insights
$25 - $49/hr10 - 492017Manchester, United KingdomTiksom's work, their responsiveness and their thoughtful, creative engagement have been impressive.
- CEO
TechWize offers a wide range of IT services including ERP, and CRM (Salesforce, MS Dynamics, Oracle, Sage, Service Now) consulting, integration, implementation, and automation as well as Digital transformation (AIML, Business Intelligence, Marketing Automation, Web and Mobile Development). Our Accreditations: Salesforce Registered Consulting Partner Over ... read TechWize reviews & insights
$25 - $49/hr250 - 9992000London, United KingdomWe foresee a successful partnership with TechWize.
- Anonymous
Netro Systems is a software development company led by you as the CEO and co-founder. The company focuses on best-in-class software development and targets markets in the UK, US, and UAE. Netro Systems has developed a diverse range of digital products, including over 20 MVPs, ... read Netro Systems Limited reviews & insights
$50 - $99/hr10 - 492019Glasgow, United KingdomNetro Systems delivered a seamless, high-quality app on time, exceeding our expectations completely
- Founder at Aimhire
Kevuru Games is a dynamic game development and art production company with a solid reputation for delivering high-quality projects on time by offering tailored services that meet each client's unique needs. With a team of industry experts and an innovative approach, we create exceptional games ... read KEVURU GAMES reviews & insights
$25 - $49/hr250 - 9992011United Kingdom3D Character Modeling for Animation Studio
- Angela Brightson
📩Get a FREE CONSULTATION OR WEBSITE AUDIT and find out how our WordPress development services can help you achieve your business goals! Just write us: [email protected] Artilab is the go-to custom WordPress development company and is loved by clients. We create high-quality, marketing-ready websites, allowing ... read Artilab reviews & insights
$25 - $49/hr10 - 492019London, United KingdomArtiLab felt like a true extension of our team — fast, detail-oriented, and technically rock-solid.
- Partner manager
Anadea helps build a solid base for your tech business. Both web and mobile, we guarantee you'll get the custom solution users will like and the market will accept. Together, we change the way people do things, for the better! Our mission is to work ... read Anadea reviews & insights
$25 - $49/hr50 - 2492000Abbeywood, United KingdomAnadea always delivers on time with high quality.
- Sr. Product Manager
We build excellent mobile & web applications using current technologies and advancements. Mobitsolutions is a website development company in uk also provides Mobile Apps, digital marketing services, with a focus on search engine marketing (SEO & PPC). Mobitsolutions was founded by two friends Usman and ... read Mobitsolutions reviews & insights
$25 - $49/hr10 - 492011Small Heath, United KingdomClear, transparent process, clear agreements, team activity.
- Workflow Proces Improvements & Marketing Manager
We are a UX/UI Design, Motion, VFX, 3D, Web & Mobile Product Development Agency. We are located in Ukraine. At every step of digital product development, customer experience design, and service provision, we act as a catalyst that turns complex business problems into strategic business ... read Keep Calm Labs reviews & insights
$25 - $49/hr2 - 9London, United KingdomKeep Calm Labs Delivers Excellence and Never Worried Much About Compensation
- Co-Founder Olavson
SharpQuest (formerly AI Software) is a custom software development company that serves as a technology partner to companies from startups to enterprises. We create software to tackle business problems that are mission-critical and build modern software solutions that work in your tech stack. Our team ... read SharpQuest, Inc. reviews & insights
$50 - $99/hr10 - 492009Abbeywood, United KingdomThey're collaborative and do everything possible to support our project.
- CTO
DigitlHaus is an award-winning full-service eCommerce agency specializing in data-driven design, custom development, platform migrations, SEO and optimization. We exist to transform and grow mid-market and enterprise B2B and D2C brands by building custom eCommerce experiences that attract, engage and convert loyal repeat customers.
NA10 - 492014Edmonton, United KingdomGood and reliable company
- Anonymous
Aegasis Labs is a software development company that provides a range of services related to data engineering, cloud engineering, data science, and machine learning. The company aims to help businesses increase their revenue and improve their bottom line through the development of custom solutions. With ... read Aegasis Labs reviews & insights
$50 - $99/hr10 - 492020London, United KingdomAegasis Labs' team is very professional and efficient, with superb knowledge and execution.
- Owner
MWDN is a global hiring service provider connecting companies with the top 5% of experts across various time zones in Israel, Europe, the USA, and Canada. For over 23 years, we have offered IT outstaffing, recruitment, and flexible models like outstaff-to-hire. Many of our clients ... read MWDN Ltd. reviews & insights
$25 - $49/hr50 - 2492002London, United KingdomProfessionall and relyable
- Founder
2Base Technologies is an enterprise software development company providing end-to-end IT digital transformation services. 2Base is passionate about simplifying the Digital Transformation Journey of our partners. We have crafted sophisticated solutions for our clients in Edu-Tech, Insurance, Travel & Logistic, Hospitality, Healthcare, F&B and Fin-Tech. ... read 2Base Technologies reviews & insights
$50 - $99/hr50 - 2492010London, United KingdomA Reliable and Professional Partner
- Operations Manager at Horizon Consulting Services
Sigli is a dynamic software development company specializing in Digital Product Development and Digital Transformation. We excel at turning innovative ideas into reality, providing end-to-end solutions that cover the entire development cycle, from concept to deployment. Our keen focus on delivering high-quality, scalable, and future-proof ... read Sigli reviews & insights
$50 - $99/hr50 - 2492015London, United KingdomDeep technical expertise, proactive approach, and strong domain knowledge made the project a success
- CEO at Devox
Timspark is at the forefront of software development and is renowned for rapidly deploying skilled engineering talent. We specialize not just in staffing but in curating and nurturing expert teams capable of addressing our clients' diverse IT challenges. Our approach combines the agility and speed ... read Timspark reviews & insights
$25 - $49/hr50 - 2492022London, United KingdomTimspark has been a great partner, and I would not change anything.
- Anonymous
Established in 2003, SciVisum has grown to become a significant player in the UK Web Performance Monitoring and Testing market. Bridging the gap between business and technology teams by providing a common language, in depth analysis, expert monitoring, intuitive reporting, and comprehensive client support, our portfolio of “dynamic user journey” based emulation, monitoring and analysis ... read thinkTribe reviews & insights
< $25/hr10 - 492003Canterbury, United Kingdom
For more than 10 years Zoonou has helped clients create world-class digital experiences. We’ve delivered over 3,000 projects tested by our UK-based ISTQB accredited team who ensure that products are reliable, intuitive, and built to the highest standard. Whether we’re providing fully managed consultant-led solutions or a more flexible responsive service, we work collaboratively with ... read Zoonou reviews & insights
< $25/hr10 - 492007Eastbourne, United Kingdom
Mtest Labs is a Digital Application Testing Agency which offers premium Web, Mobile Device / Apps Testing services.We work with Mobile Tech Startups, Tech Houses in providing Mobile Apps Testing services. We aim to deliver the Test Results within 24 - 48 hours as per your requirement with no additional cost. High-level Test Plan & ... read Mtest Labs reviews & insights
$50 - $99/hr2 - 92011London, United Kingdom
AscentiQ was formed in the year 2012 by group of management consultants. Realising the growth potential offered by software testing as a service, AscentiQ was started as an independent testing firm built on the principles of domain-led expertise and innovative IP-led solutions. From 2012 to 2019, we offered testing services to public services, banks and ... read Ascentiq Solutions Limited reviews & insights
NA10 - 492012London, United Kingdom
High Street Textile Testing Services Limited (High Street) is an established Textile and Consumer Product testing Laboratory based in Leeds UK with offices and Labs in 16 countries worldwide. The laboratory was originally started by Montague Burton as a research and development laboratory for the Burton Group more than 50 years ago. High Street was ... read HSTTS reviews & insights
< $25/hr10 - 491994Leeds, United Kingdom
2i’s mission is to remove risk from all technology solutions. Since our inception in 2005, we have grown to become the UK’s most effective and trusted software assurance and test consulting partner. We provide business leaders and digital transformation leaders with certainty of delivery through our specialist expertise and collaborative partnering. We do this with ... read 2i Testing reviews & insights
< $25/hr50 - 2492005Glasgow, United Kingdom
Edge Testing, established in 2007, has grown fast to become the UK’s largest independent software testing company. We are proud that our talented workforce, which include some of the UK’s premier testing thought leaders and experts, who help deliver exceptional services to our clients in the financial services, telecommunications and media, utilities, retail and the ... read Edge Testing reviews & insights
< $25/hr250 - 9992007Glasgow, United Kingdom
7 Elements is an Edinburgh based IT security testing specialist founded by David Stubley after 13 years of experience within the security testing industry. David held senior level positions within global blue-chip organisations where he was involved in the procurement of external security consultancy and testing resources. This valuable experience inspired David to build a ... read 7 Elements reviews & insights
< $25/hr2 - 92010Linlithgow, United Kingdom
We offer a broad spectrum of software testing and QA services aimed at helping the companies deliver flawless and optimally performing software to the users. We are a dependable QA partner for all sizes of enterprises and are committed to profitability, growth, and cost reduction by adopting a bespoke approach.
< $25/hr2 - 92019Preston, United Kingdom
At Zeus, we believe that quality make everything stand-out from the rest. Its even more important when we have something that many will use - be it a mobile app or an e-commerce site.Our team of experienced and competent resources are skilled and qualified to do just that - identify issues and get it fixed ... read Zeus Testing Solutions reviews & insights
NA2 - 9London, United Kingdom
Dhound is the UK Security and Penetration testing consultancy. We hold a range of most recognised industry certifications and accreditations both at the company level and at the level of our security experts. Our story The idea of Dhound was sparked in the early 2010s. To cover our own needs in system security, we came ... read Dhound reviews & insights
$100 - $149/hr10 - 492013Leeds, United Kingdom
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The Magical Quadrant
Hover any bubble for the firm's exact scores. Filter the view using the controls on the right.
360-PERFORMANCE VIEW (Y) →
0255075100
Industry ContendersIndustry LeadersUpcoming AchieversMarket Influencers
0255075100
CORE COMPETENCIES (X) →
The four quadrants explained
Each card shows the count of firms in that quadrant and the top 5 by composite score.
Industry Contenders
Top-left · Y ≥ 50, X < 50
0FIRMS
Strong execution but broader service mix. High-quality generalists - good fit if your project crosses multiple disciplines in one engagement.
Market Influencers
Bottom-right · X ≥ 50, Y < 50
9FIRMS
Deeply specialised but with moderate market presence. Often the right pick when specialisation matters more than scale - boutique shops with deep technical chops.
Top 5 by composite score
1a1qa100 / 492Testmatick100 / 473QA Madness94 / 494Merged Minds98 / 305Testdel UK LTd.92 / 31Upcoming Achievers
Bottom-left · Both axes < 50
11FIRMS
Newer entrants and smaller boutiques. Higher risk but often the best price-performance - particularly for early-stage startups or non-mission-critical projects.
The Industry Leaders in detail
The 1 highest-scoring firms in the Industry Leaders quadrant. Each has both Core Competencies and 360-Performance ≥ 50. Click any card for the full profile.
1LEADER
QA MentorSponsored
Core Competencies100
360-Performance53
How firms are placed on the matrix
Every position on this chart is the output of the Goodfirms ranking algorithm - a weighted composite of signals across two axes. The algorithm is recomputed regularly and is fully documented.
Sponsorship does not affect placement. PRO members receive visible badges and ad placements, but their algorithmic scores are calculated identically to free listings.
Read the full methodologyAlgorithm at a glance
1
X-axis (Core Competencies): Service Focus Ratio + Portfolio Depth + Quality + Experience
2
Y-axis (360-Performance): Client Reviews + Market Presence + Goodfirms Score
3
Missing signals are excluded from a firm's score, not substituted with defaults - weights redistribute across remaining inputs
4
Recency decay over the last 18 months keeps stale reviews from dominating
5
Eligibility floor: ≥ 1 published review in this category scope
England · $0-24/hr