Top 100 Software Testing Companies in the United Kingdom
The Best of December 2025Looking for a top software QA company in the United Kingdom?
Hiring a software testing company is a necessity to both test and improve the services your company offers, especially in an increasingly digital world.
To assist you in your search for a partner, we’ve compiled this list of the top software testing companies in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom Software QA Companies
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$5,000+50 - 249 employeesSeattle, WARead More
QA Wolf, an application testing company, was launched in 2019. The company provides application testing and has a small team.
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31$5,000+50 - 249 employeesBengaluru, IndiaRead More
Inncrewin Technologies is a software agency based in Bangalore, India, and founded in 2008. Their team of more than 50 offers custom software, web, and mobile app development solutions for small and mid-market firms in the fields of e-commerce, hospitality, and advertising.
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Signature FlowIndustries
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32$25,000+2 - 9 employeesLondon, EnglandRead More
Pixie Labs is a London, United Kingdom-based custom software development firm. The small company was launched in 2013. Their services include custom software development, Artificial Intelligence, e-commerce development, ux/ui design, and more.
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33$10,000+10 - 49 employeesLondon, EnglandRead More
House Of Progress is a growth marketing agency that provides digital strategy, conversion optimization, and market research services to their small business, enterprise, and mid-market clients in the consumer products and services, retail, and other industries. Based in Bucharest, their team is made up of 10 employees.
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KnightsbridgeFXIndustries
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34$50,000+50 - 249 employeesLondon, EnglandRead More
Founded in 2006, Vector Software Ltd is an IT outsourcing company based in L'viv, Ukraine. They have more than 50 employees that specialize in application testing and development. They mostly work with mid-market and small businesses.
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Stingray - Optical delousing solutions for fishing industry;Industries
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35$250,000+1,000 - 9,999 employeesLondon, EnglandInfostretch is a large Application Testing company headquartered in Santa Clara, California and New York, New York. Their services include Application Testing and Enterprise App Modernization.Read More
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36$5,000+10 - 49 employeesAltrincham, EnglandWireApps is an app development company. Their small team is in Altrincham, United Kingdom and Pannipitiya, Sri Lanka. The agency provides mobile app development, web development, application management & support, and application testing.Read More
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37$5,000+2 - 9 employeesShipston on Stour, EnglandRead More
24 Development is an app development firm based in the United Kingdom. Founded in 2017, their team of around three employees provides mobile, web, and custom app development services.
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GreatorIndustries
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38$10,000+2 - 9 employeesLondon, EnglandRead More
O'Dwyer Software is a London-based software company founded in 2014 with a team of more than two experts. They specialize in web development, custom software development, and application testing for clients ranging from small businesses to large firms.
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GFKIndustries
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39$10,000+50 - 249 employeesWorcester, EnglandSaratoga is a midsize custom software development company. Established in 1998, the team offers Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, IT staff augmentation, and more. The firm is based in Cape Town, South Africa and Worcester, England.Read More
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Old MutualIndustries
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40$5,000+1,000 - 9,999 employeesLondon, EnglandTestingXperts is an Application Testing company. The Mechanicsburg, Pennsylvania-based company was launched in 2002. Their services include Application Testing.Read More
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Query SurgeIndustries
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41$10,000+10 - 49 employeesBirmingham, EnglandLaunched in 2010, B13 AI Ltd is a small Product Design company. Their team specializes in Product Design, Custom Software Development, Application Testing, UX/UI Design, and more. The company is located in Birmingham, England.Read More
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42$10,000+50 - 249 employeesLondon, EnglandEstablished in 2016, ClicQA is a midsize Application Testing company. Their services include Application Testing.Read More
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43$5,000+10 - 49 employeesLondon, EnglandLaunched in 2013, TAREENITY FZE LLC is an Application Testing company. Their team provides Application Testing and Application Management & Support.Read More
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44$10,000+50 - 249 employeesLondon, EnglandUnibrix is a midsize web development firm. Based in Cherkasy, Ukraine and London, England, the company was founded in 2013. Their services include Web Development, Custom Software Development, Mobile App Development, Application Testing, and more.Read More
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45$10,000+10 - 49 employeesOadby, EnglandRead More
Xibis is a web and mobile application development company based in Leicester, UK. It was founded in 1998 and employs a team of 27 that works on projects in web development, mobile app development, e-commerce development, and application testing.
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HalfordsIndustries
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46$5,000+2 - 9 employeesDartford, EnglandRead More
Ruvca Consulting is a consultancy founded in 2011 with fewer than 10 members. Based in Dartford, England, they are experts in custom software development and application testing solutions for clients in the financial, business, and IT services industries, among others.
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BNP ParibasIndustries
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47$10,000+10 - 49 employeesHounslow, EnglandKualitysoft is an application testing company. The small Gujranwala, Pakistan-based agency was launched in 2017. Their services include application testing and web development.Read More
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48Undisclosed250 - 999 employeesBellshill , ScotlandEdge Testing Solutions is a midsize Bellshill , Scotland-based IT strategy consulting and Application Testing company. Their services include IT strategy consulting and Application Testing.Read More
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49$5,000+10 - 49 employeesLondon, EnglandRead More
Pixelpk Technologies is a custom software development company launched in 2018. The firm specializes in custom software development, mobile app development, social media marketing, search engine optimization, and more and has a small team.
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50Undisclosed10 - 49 employeesLondon, England360logica Software Testing Services is a Noida, India-based Application Testing company. The team provides Application Testing and Custom Software Development.Read More
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51Undisclosed1,000 - 9,999 employeesHyderabad, IndiaRead More
ValueLabs is a global business technology services and solutions provider based in Hyderabad, India with over 25 offices worldwide in the US, Europe, and Asia. Founded in 1997, ValueLabs' team of over 5,000 employees provides non-voice BPO/back office services and voice/call center capabilities.
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52$10,000+50 - 249 employeesWokingham, EnglandNextgen Technology, a midsize Application Testing company, is based in Wokingham, England and Itasca, Illinois. The team specializes in Application Testing.Read More
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53$5,000+10 - 49 employeesLondon, EnglandRead More
The ASO.co is a london-based agency that specializes in app store optimization. Founded in 2015, their team of 25–50 mostly services enterprise-level clients in industries that range from retail to healthcare. Additionally, they provide competitor analysis, localization, and SEO.
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eBayIndustries
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54$5,000+2 - 9 employeesLondon, EnglandRead More
Located in London, United Kingdom, Component Product Foundry is a UX design company. The agency offers ux/ui design, marketing strategy, digital strategy, content marketing, and more and is small.The agency was established in 2018.
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55$5,000+50 - 249 employeesManchester, EnglandCodeArrest Softwares Private Limited is a Kota, India-based web development firm. The midsize company was founded in 2021. Their team offers Web Development, Mobile App Development, Application Testing, Custom Software Development, and more.Read More
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56Undisclosed10,000+ employeesLondon, EnglandHeadquartered in Carmanhall And Leopardstown, Ireland and Burbank, California, Keywords Studios is a large video production agency. The team provides Video Production and Mobile App Development.Read More
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57$25,000+50 - 249 employeesHorbury, EnglandApplication Management & Support company Propel Tech Ltd was launched in 2007. The agency offers Application Management & Support and Custom Software Development.Read More
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Quickline Communications Limited J.C.B - J.C. Bamford Excavators Limited Allsop Property Auction Mi Hub LTDIndustries
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58Undisclosed50 - 249 employeesBirmingham, EnglandLuminaVest LTD is a midsize Direct Marketing company headquartered in Birmingham, England; Miami, Florida and Miami, Florida. They provide Direct Marketing, Custom Software Development, Artificial Intelligence, Application Testing, and more and were established in 2019.Read More
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59$5,000+2 - 9 employeesLondon, EnglandMtest Labs is an Application Testing company. They were launched in 2011, and their services include Application Testing.Read More
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60$1,000+10 - 49 employeesIlford, EnglandAscentiq solutions limited is an Ilford, England-based Application Testing company. They provide Application Testing.Read More
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