Top 100 Usability Testing Companies in London
The Best of December 2025Looking 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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121$5,000+2 - 9 employeesLondon, EnglandRead More
Milo Creative is a digital studio located in London. Founded in 2002, it has a team of 17 that specializes in mobile app development, UX/UI design, and web development services. They work with companies in various industries including education, health care & medical, and advertising & marketing.
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Sony MusicIndustries
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122$25,000+10 - 49 employeesLondon, EnglandRead More
Start Design is a design consultancy with offices in London, Dubai, and Manchester, England. Founded in 1996, they have 137 employees specializing in retail, digital and brand design. Working with a wide range of midmarket companies, they focus on branding, architectural innovation, and UX.
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BarclaysIndustries
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123$25,000+10 - 49 employeeslondon, EnglandRead More
Thought&Function is a digital agency founded in London in 2017 with no more than 10 members. They are experts in web development, mobile app development, and UX/UI design solutions for clients in the industries of financial services, education, and health care.
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DoctorLinkIndustries
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124$5,000+10 - 49 employeesLondon, EnglandRead More
Established in 2020, Ash Studio is a small UX design company. Their services include ux/ui design, product design, web design, graphic design, and more. The agency is located in Odesa, Ukraine.
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125$5,000+2 - 9 employeesLondon, EnglandRead More
Founded in 2013, UX247 is an UX agency. The agency offers ux/ui design and has a small team. The agency is headquartered in London, United Kingdom.
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126$1,000+10 - 49 employeesLondon, EnglandLaunched in 2023, Saasfactor is an user experience company. They are based in Dhaka, Bangladesh; Dover, Delaware; Abu Dhabi, United Arab Emirates and London, England and have a small team. The agency focuses on UX/UI Design.Read More
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Lancerly Private Internet Access (PIA) Sparrow Marketing CarientIndustries
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127$10,000+10 - 49 employeesLondon, EnglandApplication development firm Redbee Software was founded in 2018. Their small team is located in Cluj-Napoca, Romania; New York, New York and London, England and specializes in Mobile App Development, Web Development, and UX/UI Design.Read More
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128$100,000+10 - 49 employeesLondon, EnglandCogworks is a London, England-based user experience design agency. The small team focuses on UX/UI Design, Digital Strategy, Web Development, IT strategy consulting, and more. The agency was established in 2006.Read More
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129$10,000+2 - 9 employeesLondon, EnglandRead More
Voodoochilli is a web design company located in Hereford, United Kingdom; London, United Kingdom and Boliqueime, Portugal. They focus on web design, ux/ui design, web development, digital strategy, and more and were founded in 2001.
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Engel & VölkersIndustries
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130$5,000+10 - 49 employeesLondon, EnglandRead More
Founded in 2018, Uvio is an UX agency. The small team specializes in ux/ui design, web design, web development, custom software development, and more. The firm is headquartered in Concord, California and Rīga, Latvia.
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131$5,000+10 - 49 employeesSurbition, EnglandRead More
Mrmmbs Vision, an application development firm, was established in 2011. The small team provides mobile app development, web development, custom software development, ux/ui design, and more. The agency is located in New Delhi, India and Surbition, United Kingdom.
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132$5,000+10 - 49 employeesLondon, EnglandRead More
AR/VR development company CIRCUS is in London, United Kingdom. The agency offers AR/VR development, video production, web design, ux/ui design, and more and is small.The agency was launched in 2010.
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133$10,000+2 - 9 employeesLondon, England11:11 Studio is a branding company launched in 2023. Their small team is based in London, England. The company specializes in Branding, Web Design, Content Marketing, UX/UI Design, and more.Read More
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134$1,000+2 - 9 employeesThornton Heath, EnglandRead More
Established in 2017, RA Republic is a business consulting company. They are located in Thornton Heath, United Kingdom and have a small team. The agency provides business consulting, ux/ui design, branding, web design, and more.
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135$1,000+2 - 9 employeesLondon, EnglandRead More
Lab3 Apps is a development agency founded in 2015 with no more than 10 employees. They offer mobile app development, UX/UI design, and web development solutions from their office in Christchurch, New Zealand. They primarily work with small businesses.
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Whitebait MediaIndustries
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136$5,000+2 - 9 employeesLondon, EnglandRead More
IMEDIAVAN, an application development company, was launched in 2013. They are in London, United Kingdom; Barcelona, Spain and Paris, France and have a small team. Their services include mobile app development, web development, e-commerce development, and IoT development.
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137$1,000+10 - 49 employeesLondon, England24SQ is a London, United Kingdom-based website development firm. They specialize in web development, web design, ux/ui design, graphic design, and more and were launched in 2005.Read More
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Abbott Diabetes CareIndustries
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138$10,000+50 - 249 employeesBorehamwood, EnglandIGuru Software Ltd., an UX design company, was launched in 2014. They are headquartered in Borehamwood, England and have a midsize team. IGuru Software Ltd. Offers UX/UI Design, Web Development, Mobile App Development, Wearable App Development, and more.Read More
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139$10,000+2 - 9 employeesLondon, EnglandRead More
BOOST Design is a web design agency founded in 2019. The company specializes in web design, search engine optimization, and conversion optimization and has a small team.
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140$25,000+50 - 249 employeesLondon, EnglandZentix, an UX design company, is in Jelgava, Latvia and London, England. Founded in 2021, the midsize team specializes in UX/UI Design, E-Commerce Development, Low/No Code Development, Web Design, and more.Read More
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141$25,000+50 - 249 employeesLondon, EnglandRead More
PENTA YAZILIM WEB TASARIM HİZMETLERİ, a web design company, was founded in 2003. The small team offers web design, ux/ui design, and web development. The agency is located in istanbul, Turkey.
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142$10,000+10 - 49 employeesLondon, EnglandRead More
SEO agency Together Agency was established in 2006. They are based in Nottingham, United Kingdom and have a small team. Their services include search engine optimization, web design, advertising, ux/ui design, and more.
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THOMAS FUDGE'SIndustries
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143$1,000+10 - 49 employeesLondon, EnglandRead More
Shoreditch Design Studio is a design agency based in London and founded in 2019. With over two employees, they specialize in UX/UI, web, and product design solutions for clients ranging from small firms to large companies.
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TeamSportzIndustries
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144$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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145$50,000+10 - 49 employeesLondon, EnglandMade by ON is a web development firm. The London, England-based company specializes in Web Development and Digital Strategy.Read More
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Airbnb -
146$5,000+2 - 9 employeesLondon, EnglandRead More
Doublesided is a web design company established in 2004. Their small team is in London, United Kingdom. The agency focuses on web design and video production.
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Skin Health AllianceIndustries
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147$5,000+10 - 49 employeesLondon, EnglandDBETA LIMITED is a website development company. Founded in 2019, the team specializes in web development, other digital marketing, and web design. Their small firm is London, United Kingdom-based.Read More
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148$10,000+10 - 49 employeesLondon, EnglandFhoke is a branding agency launched in 2008. Located in Salisbury, United Kingdom, their small team focuses on branding, web development, print design, and web design.Read More
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Travis PerkinsIndustries
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149$50,000+50 - 249 employeesLondon, EnglandRead More
ustwo is a digital design studio based in London with around 250 employees. Since its start in 2004, the team has provided web design and development, e-commerce development, mobile development, and UX/UI design services for large companies in a variety of industries.
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GoogleIndustries
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150$1,000+10 - 49 employeesLondon, EnglandTenet - UI UX Design Agency | Experience Design, an UX company, was established in 2019. Based in دبي, United Arab Emirates; Noida, India and London, England, their small team offers UX/UI Design, Custom Software Development, Web Design, Web Development, and more.Read More
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Mercedes Gartner G42 Group BalsanIndustries
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