Top 100 Usability Testing Companies in London
The Best of March 2026Looking for a top usability testing agency in London?
Usability testing helps companies vet if a product is worth investing time and resources in building. It also helps improve existing products by accounting for user feedback and pain points in design and functionality updates.
For example, let's say you're looking at Analytics and notice visitors to your website often visit one page only. You may hypothesize that your navigation is not user friendly. You could design and develop an updated navigation, or you could hold user tests to vet your hypothesis and get suggestions for navigation features your users need.
User testing may seem time consuming up-front, but it ultimately saves time and money later. For expert assistance, consider hiring a usability testing company. Usability testing services define test scenarios, identify test subjects, conduct the tests, and compile feedback for you.
To assist you in your search for a partner, we’ve compiled this list of the top usability testing companies in London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London Usability Testing Services
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31$10,000+10 - 49 employeesLondon, EnglandFounded in 2018, Hiyield is a web design agency. Their small team is headquartered in London, England; Truro, England and Bristol, England. Their team offers Web Design, UX/UI Design, Custom Software Development, Web Development, and more.Read More
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32$10,000+10 - 49 employeesLondon, EnglandFormat-3 is a small user experience company. Established in 2023, the agency is headquartered in London, England and Nashville, Tennessee. Their services include UX/UI Design, Digital Strategy, Custom Software Development, and Web Development.Read More
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Natural History Museum TripleKey JojoBet DailyWireIndustries
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33$50,000+50 - 249 employeesLondon, EnglandRead More
Supercharge is a digital production firm that is headquartered in Budapest, Hungary with a second office in London. Founded in 2010, Supercharge's team of more than 100 employees specializes in web and mobile app development. The firm also offers UI/UX design services to its clients.
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34$50,000+10 - 49 employeesLondon, EnglandBoldheart, a mobile application development firm, was founded in 2020. The agency specializes in Mobile App Development, Custom Software Development, UX/UI Design, IT strategy consulting, and more and has a small team. The agency is in Berlin, Germany; München, Germany; Zürich, Switzerland and Wien, Austria.Read More
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ValoraIndustries
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35$10,000+2 - 9 employeesLondon, EnglandUniko Studio, a branding agency, was launched in 2022. The company provides branding, web design, ux/ui design, logo, and more and has a small team. The company is based in London, United Kingdom and دبي, United Arab Emirates.Read More
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36$10,000+10 - 49 employeesLondon, EnglandRead More
Plug & Play is a UX/UI agency based in London and Surrey. Founded in 2007, they are specialists in user experience and user interface design for software, websites and custom applications. They also have a front-end development service to support clients with the design implementation. Plug & Play work across a number of sectors with their clients ranging from funded startups to large corporations such as Legal & General.
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WWF Powerleague Give A Grad A Go RSL AwardsIndustries
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37$10,000+50 - 249 employeesKingston upon Thames, EnglandRead More
Founded in 2019, Uinno is an artificial intelligence firm. The midsize team specializes in Artificial Intelligence, Custom Software Development, Low/No Code Development, UX/UI Design, and more. The company is based in L'viv, Ukraine; Tallinn, Estonia; Kingston upon Thames, England and Zaporizhzhia, Ukraine.
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OnlyFansIndustries
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38$10,000+10 - 49 employeesLondon, EnglandRead More
TopDevs is a small website development company located in London, England and Burnaby, Canada. Launched in 2009, the team specializes in Web Development, Mobile App Development, and UX/UI Design.
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SolocatorIndustries
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39$5,000+250 - 999 employeesLondon, EnglandRiseup Labs, an user experience agency, was established in 2010. The midsize Dhaka, Bangladesh-based team specializes in UX/UI Design, IT managed services, IT staff augmentation, Custom Software Development, and more.Read More
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40$10,000+10 - 49 employeesLondon, EnglandRead More
CodeLeap is a London, United Kingdom-based application development firm. The small team specializes in mobile app development, web development, Artificial Intelligence, AR/VR development, and more. The company was founded in 2019.
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41$25,000+10 - 49 employeesLondon, EnglandTogether is a branding company launched in 2018. The small team specializes in Branding, UX/UI Design, Product Design, Web Development, and more. The agency is located in London, England; New York, New York and San Francisco, California.Read More
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UnitIndustries
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42$10,000+10 - 49 employeesLondon, EnglandRead More
Cloudflex, a custom software development firm, is in Kyiv, Ukraine. The small team specializes in custom software development, mobile app development, web development, Artificial Intelligence, and more. The firm was founded in 2018.
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YazaIndustries
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43$5,000+10 - 49 employeesLondon, EnglandRead More
Slick is an UX design agency. The small San Jose, California-based company was founded in 2021. Their team specializes in UX/UI Design, Web Design, and Product Design.
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44$10,000+10 - 49 employeesLondon, EnglandEqual is a São Domingos de Rana, Portugal-based UX agency. The small team focuses on UX/UI Design, Product Design, Custom Software Development, Web Design, and more and was established in 2019.Read More
Clients
Management systems for Hospitality Management systems for Construction Management systems for Logistics Management systems for Energy & UtilityIndustries
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45$10,000+2 - 9 employeesLondon, EnglandFellow Studio is a branding agency based in London, England. The small agency was launched in 2012. Their services include Branding, Graphic Design, Web Design, UX/UI Design, and more.Read More
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Travel SentryIndustries
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46$1,000+1,000 - 9,999 employeesLondon, EnglandRead More
Zerocoder is a London, United Kingdom-based software development firm. The large firm was founded in 2023. Their services include custom software development, web development, mobile app development, web design, and more.
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47$25,000+10 - 49 employeesLondon, EnglandWe Are Kitty is a web design agency. Launched in 2017, the company is in London, England and Cape Town, South Africa. The small team provides Web Design, UX/UI Design, Web Development, E-Commerce Development, and more.Read More
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48$5,000+10 - 49 employeesLondon, EnglandTHEY.dev is a custom software development firm. They provide Custom Software Development, UX/UI Design, Mobile App Development, Application Testing, and more and were established in 2017. Their small team is London, England-based.Read More
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LaunchworksIndustries
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49$5,000+50 - 249 employeesLondon, EnglandRead More
Based in London, England and Praha 8, Czech Republic, Pixelfield is an user experience company. The agency specializes in UX/UI Design, Mobile App Development, Web Design, Product Design, and more and is midsize.The agency was founded in 2012.
Clients
Raiffeisen BankIndustries
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50$25,000+10 - 49 employeesLondon, EnglandHex Digital, an advertising company, is headquartered in London, United Kingdom. The small company was launched in 2008. Their services include advertising, custom software development, ux/ui design, branding, and more.Read More
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51$25,000+50 - 249 employeesLondon, EnglandWebsite development firm Deeep was established in 2009. The midsize team provides Web Development, Custom Software Development, UX/UI Design, Low/No Code Development, and more. The firm is headquartered in London, England and Dubai, United Arab Emirates.Read More
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Societe Generale Group Emirates NBD Bank SBI Bank 24AI & 24ORMIndustries
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52$10,000+10 - 49 employeesLondon, EnglandRattlesnake Group, a branding company, was founded in 2020. The company specializes in Branding, UX/UI Design, Custom Software Development, Web Design, and more and has a small team.Read More
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53$10,000+50 - 249 employeesLondon, EnglandSignifly is a branding company established in 2010. They are located in Montréal, Canada; København, Denmark; Oslo, Norway and Stockholm, Sweden and have a midsize team. The company specializes in Branding, E-Commerce Development, Marketing Strategy, Digital Strategy, and more.Read More
Clients
GoogleIndustries
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54$10,000+10 - 49 employeesLondon, EnglandExperience Dynamics is a Seattle, Washington-based UX design agency. The small team specializes in UX/UI Design and AI Consulting. The agency was established in 2001.Read More
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NikeIndustries
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55Undisclosed50 - 249 employeesLondon, EnglandRead More
Fourmeta is an e-commerce development firm founded in 2017. In London, United Kingdom, their midsize team offers e-commerce development, ux/ui design, and web development.
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56$50,000+10 - 49 employeesLondon, EnglandRead More
NEVERBLAND is a web development firm. They provide web development, web design, ux/ui design, custom software development, and more and were launched in 2010. Their small team is London, United Kingdom-based.
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TogetherallIndustries
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57$10,000+10 - 49 employeesLondon, EnglandRead More
Glorify Ltd is a small UX company. The London, United Kingdom-based company was founded in 2019. Their team focuses on ux/ui design.
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58$25,000+10 - 49 employeesLondon, EnglandStakk is an application development firm launched in 2016. Their small team is based in London, England; Wilmington, Delaware; Amsterdam, Netherlands and Orlando, Florida. The company provides Mobile App Development, Artificial Intelligence, and UX/UI Design.Read More
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59$10,000+10 - 49 employeesLondon, EnglandRead More
Located in London, England and Madrid, Spain, Catch is a small Digital Strategy company. They focus on Digital Strategy, UX/UI Design, Web Development, Web Design, and more and were founded in 2007.
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SharpIndustries
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60$25,000+50 - 249 employeesCobham, EnglandMobcoder, an IT staff augmentation company, is located in Seattle, Washington; Cobham, England; Ghaziabad, India and Burnaby, Canada. The midsize company was launched in 2014. Their services include IT staff augmentation, Artificial Intelligence, UX/UI Design, BI & big data consulting & SI, and more.Read More
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General millsIndustries
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