Top 100 JavaScript Development Companies in London
The Best of May 2026Looking for a top JavaScript developer in London?
If you're hiring a JavaScript developer to help you build or update a website that's responsive and interactive, consider the pros and cons of JavaScript as a programming language. Advantages include its speed because it's executed on the client-side; reduction in server load; and diverse functionality. Disadvantages to consider include security such as bugs on the client-side.
To assist you in your search for a partner, we’ve compiled this list of the top JavaScript development agencies in London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London JavaScript Developers
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481$5,000+2 - 9 employeesLondon, EnglandIconify is a small London, England-based software development firm. Their services include Custom Software Development and Branding.Read More
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482$5,000+50 - 249 employeesLondon, EnglandAeliusventure is an AR/VR development company located in Southlake, Texas; Ahmedabad, India and London, England. The midsize agency was launched in 2014. Their team offers AR/VR development, Artificial Intelligence, BI & big data consulting & SI, cloud consulting & SI, and more.Read More
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483$10,000+10 - 49 employeesNew Barnet, EnglandRead More
WorkSpin Ltd. Is a mobile application development company. They focus on mobile app development, web development, devops managed services, application management & support, and more and were launched in 2020. The firm is based in New Barnet, United Kingdom.
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Watz GudIndustries
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484$10,000+10 - 49 employeesHarpenden, EnglandSoftware development firm This Is Software was founded in 2023. The small Harpenden, England-based team offers Custom Software Development, Web Development, Artificial Intelligence, and Enterprise App Modernization.Read More
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485$1,000+2 - 9 employeesBracknell, EnglandInternet Mate Ltd is a small custom software development firm in Bracknell, United Kingdom. Established in 2011, the team offers custom software development, web development, web design, IT strategy consulting, and more.Read More
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486$10,000+10 - 49 employeesRoyal Tunbridge Wells, EnglandAI company Chilliapple Ltd. Is located in Royal Tunbridge Wells, England. They offer Artificial Intelligence, Custom Software Development, Web Development, Mobile App Development, and more and were established in 2008.Read More
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easyCar Magee Riskpal Rugs of LondonIndustries
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487$10,000+50 - 249 employeesLondon, EnglandRead More
Artificial intelligence company ACS | AI Powered Web and Mobile Apps is in London, England and Nagercoil, India. The midsize agency was launched in 2012. Their team focuses on Artificial Intelligence, Mobile App Development, Custom Software Development, AI Consulting, and more.
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Unsworth Limited PlainSailing Limited Turnkey Group Enabling ProcurementIndustries
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488$25,000+50 - 249 employeesBerkhamsted, 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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489$1,000+10 - 49 employeesWindsor, EnglandRead More
Located in Mississauga, Canada and Kolkata, India, Primary Infotech Private Limited is an app development firm. The small company was founded in 2019. Their services include mobile app development, web design, and e-commerce development.
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490$25,000+10 - 49 employeesGuildford, EnglandCommunere Ltd is a website development company located in Guildford, United Kingdom. Established in 2012, the small team focuses on web development, custom software development, mobile app development, Artificial Intelligence, and more.Read More
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AgxioIndustries
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491$5,000+2 - 9 employeesRoyal Tunbridge Wells, EnglandRead More
Two Hours Sleep is a web design agency launched in 2018. Their small team is headquartered in Tunbridge Wells, United Kingdom. Their services include web design, web development, ux/ui design, conversion optimization, and more.
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492$10,000+2 - 9 employeesCrawley, EnglandRead More
Founded in 2018, Cygnet Digital is an e-commerce development company. The agency focuses on e-commerce development, web development, custom software development, mobile app development, and more and has a small team.
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SightsaversIndustries
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493$1,000+10 - 49 employeesFleet, EnglandRead More
Flow Guys, a website development company, was launched in 2022. The small Fleet, United Kingdom-based team focuses on web development.
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494$10,000+2 - 9 employeesStevenage, EnglandWebsite development company Climbing Turn Ltd was founded in 2009. The small team focuses on Web Development and Web Design.Read More
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495$5,000+2 - 9 employeesWindsor, EnglandEstablished in 2010, Lion Enterprises Ltd is an e-commerce development company. The firm provides E-Commerce Development and Custom Software Development, and is small.Read More
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496$5,000+10 - 49 employeesGuildford, EnglandEquals Collective, a small user experience design company, is in Guildford, England. The team focuses on UX/UI Design and E-Commerce Development.Read More
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497$1,000+10 - 49 employeesLittle Waltham, EnglandRead More
Founded in 2015, WebMeridian is development agency headquartered in Kharkiv, Ukraine. Their team of 32 provide e-commerce development, web development, and mobile application development services to their clients.
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498$1,000+10 - 49 employeesLittle Waltham, EnglandVisibility SEO is a SEO company launched in 2023. The small team focuses on Search Engine Optimization, Web Development, Content Marketing, Web Design, and more. The agency is in Little Waltham, England and Las Vegas, Nevada.Read More
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Peter Boolkah Karie Kaufmann ActionCoach of Arizona DC FlooringIndustries
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499$25,000+1,000 - 9,999 employeesChelmsford, Essex, EnglandSilver Touch Technologies, an ERP consulting and SI company, is in Ahmedabad, India; Woodbridge Township, New Jersey; Chelmsford, Essex, England and Markham, Canada. The large team focuses on ERP consulting and SI, Custom Software Development, Web Development, and Robotics Process Automation. The company was launched in 1995.Read More
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500UndisclosedFreelancer employeesCity of London, EnglandVanilla Noir is a City of London, England-based branding agency. Their services include Branding and IT managed services.Read More
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501$10,000+2 - 9 employeesFleet, EnglandRead More
Launched in 2008, Deuce Creative is a small branding firm located in Aldershot, United Kingdom. Their services include branding, digital strategy, marketing strategy, search engine optimization, and more.
Clients
Make-a-Wish Foundation UK -
502$10,000+10 - 49 employeesHitchin, EnglandEstablished in 2014, Insites Digital is a web design company. The team specializes in Web Design and UX/UI Design and is based in Hitchin, England.Read More
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503$10,000+2 - 9 employeesFarnham, EnglandFull Clarity is a Farnham, England-based UX design company. The small team provides UX/UI Design, Advertising, Custom Software Development, Web Development, and more. The company was founded in 2018.Read More
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ITVIndustries
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504$5,000+2 - 9 employeesGuildford, EnglandAMAR Design is a small user experience design company. Launched in 2021, the team provides UX/UI Design and Web Development.Read More
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505$1,000+2 - 9 employeesHemel Hempstead, EnglandEstablished in 2024, The Creative Box is a branding agency. Their services include Branding and Social Media Marketing.Read More
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506$25,000+50 - 249 employeesReading, EnglandWorth Digital is a web design agency. They are in Reading, England and Rijswijk, Netherlands. Their team provides Web Design and UX/UI Design.Read More
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507$1,000+2 - 9 employeesBasildon, EnglandWeb design company Off The Peg Design Ltd was established in 2000. The company offers Web Design and Search Engine Optimization, and is small.Read More
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508$5,000+2 - 9 employeesWarfield, EnglandFounded in 2019, VersionMaybe. Is a small Warfield, England-based app development company. Their team provides Mobile App Development and Web Development.Read More
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509Undisclosed50 - 249 employeesWatford, EnglandTechno Facts Solutions Pvt Ltd is a software development firm based in Dublin, Ohio and Hyderabad, India. They focus on Custom Software Development and Staffing.Read More
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510UndisclosedFreelancer employeesCity of London, EnglandAmato Capital Limited is a custom software development firm based in City of London, England. They offer Custom Software Development and Web Development.Read More
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