Top 100 JavaScript Development Companies in London
The Best of December 2025Looking 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$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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482$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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483$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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484$5,000+2 - 9 employeesWoodham, EnglandHaradigital.co.uk is a website development company in Woodham, England. They offer Web Development and E-Commerce Development and were founded in 2020.Read More
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485$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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486$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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487$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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488$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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489$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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490UndisclosedFreelancer 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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491$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.
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Make-a-Wish Foundation UK -
492$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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493$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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494$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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495$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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496$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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497$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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498$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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499Undisclosed50 - 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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500UndisclosedFreelancer 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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501UndisclosedFreelancer employeesLondon, EnglandTangerineSEO is a SEO services firm. Their small team of employees is located in London, England. Their team focuses on Search Engine Optimization and Content Marketing.Read More
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502$1,000+10 - 49 employeesHarlow, EnglandFNF Group is a web design company. They are located in Faisalabad, Pakistan and have a small team. The agency provides web design, product design, graphic design, logo, and more.Read More
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503Undisclosed2 - 9 employeesAylesford, EnglandWebsite development company webdeveloperslab is in Aylesford, England. The team focuses on Web Development and Other Digital Marketing.Read More
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504$5,000+10 - 49 employeesCrawley, EnglandAJ Nodes, a custom software development firm, was founded in 2016. The company focuses on Custom Software Development and Web Development.Read More
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505$5,000+2 - 9 employeesEast Grinstead, EnglandBumblebee IT Solutions Ltd, a custom software development firm, was established in 2019. The company offers Custom Software Development and Web Development.Read More
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506$25,000+10 - 49 employeesTheale, EnglandRead More
Rouge Media is a web design company. They provide Web Design, Web Development, and Branding and were established in 2003. The firm is based in Theale, England.
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507$5,000+10 - 49 employeesSintra, PortugalLAB325 is a web development company. The small Sintra, Portugal-based agency was established in 2016. Their team offers Web Development, Mobile App Development, Artificial Intelligence, Generative AI, and more.Read More
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508$50,000+10 - 49 employeesHoughton Regis, EnglandSmall web design company Al Jaami Technologies, is based in Houghton Regis, England. The team specializes in Web Design and UX/UI Design.Read More
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RepairCMS ULTIMATEIndustries
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509$50,000+10 - 49 employeesLong Crendon, EnglandWeb development firm GrowCreate was founded in 2012. Their small team is headquartered in Long Crendon, England. GrowCreate specializes in Web Development, Application Management & Support, UX/UI Design, and DevOps Managed Services.Read More
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510UndisclosedFreelancer employeesGreat Warley, EnglandIn Great Warley, England, Online Business Solutions is a small social media marketing agency. Their services include Social Media Marketing and Content Marketing.Read More
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