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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151$5,000+250 - 999 employeesRajkot, IndiaRead More
Founded in 2006, NCrypted Technologies is a development company headquartered in Helsinki. With a team of nearly 500, they have additional locations in Gujarat, India. They serve mostly small to midmarket businesses across several industries, providing web, mobile app, and e-commerce development services.
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Ford Motor CompanyIndustries
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152$1,000+10 - 49 employeesRuislip, EnglandRead More
Apuzztech is a. They are located in Memphis, Tennessee and have a small team. The firm focuses on.
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153$10,000+10 - 49 employeesLondon, EnglandTechtiq is a London, England-based app development firm. The small firm was launched in 2017. Their services include Mobile App Development, Web Development, Custom Software Development, and Web Design.Read More
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Oxford UniversityIndustries
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154$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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155$1,000+10 - 49 employeesLondon, EnglandEstablished in 2006, Cefar is a small web design agency. Their team focuses on Web Design, Branding, Search Engine Optimization, UX/UI Design, and more. The agency is based in Leeds , England and London, England.Read More
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Hillsborough Fencing Ginetta NHS Springfield TrainingIndustries
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156$75,000+10 - 49 employeesOtford, EnglandEcce. Is a small software development company based in Otford, England. Launched in 2000, the team specializes in Custom Software Development, Web Development, Mobile App Development, E-Commerce Development, and more.Read More
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157$25,000+10 - 49 employeesLondon, EnglandRead More
Mobile app development company Borne Digital is headquartered in London, UK. Their team of 20 employees also works from offices in Toronto, Canada and New York. Established in 2013, they provide web design, web development, UX/UI design, and branding, on top of mobile app development services. Their clients span all industries but are mostly small and mid-market businesses.
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AsicsIndustries
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158$10,000+10 - 49 employeesLondon, EnglandBrainlab Studio is a small e-commerce development company launched in 2013. Their services include E-Commerce Development, Web Development, and Web Design. The agency is located in Kyiv, Ukraine and London, England.Read More
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159$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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160$1,000+2 - 9 employeesLondon, EnglandVector, a branding company, was launched in 2019. Their small team is located in London, England. Their services include Branding, UX/UI Design, and Web Development.Read More
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161$5,000+10 - 49 employeesLondon, EnglandIn London, United Kingdom, Main Menu is a software development firm. The small team offers custom software development, web development, web design, ux/ui design, and more. The agency was launched in 2009.Read More
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162$5,000+2 - 9 employeesLondon, EnglandRead More
Animus Bytes is an UX design company. Founded in 2020, the team focuses on ux/ui design, custom software development, web development, and mobile app development. Their small firm is headquartered in London, United Kingdom.
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SkydrocellIndustries
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163$1,000+250 - 999 employeesLondon, EnglandOzrit is a Hyderabad, India-based website development firm. The midsize team provides Web Development, Mobile App Development, Web Design, Social Media Marketing, and more and was established in 2009.Read More
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164$1,000+10 - 49 employeesLondon, EnglandRead More
Augmetic Technology is a small global technology company based in Ahmedabad, India. Founded in 2013, their team specializes in application management, application support, and e-commerce development.
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Khelmart EnterpriseIndustries
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165$25,000+10 - 49 employeesLondon, EnglandRead More
Aleios is a custom software development firm. They are located in London, United Kingdom and have a small team. Their services include custom software development, enterprise app modernization, web development, and other IT consulting and SI. The firm was founded in 2021.
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166$1,000+10 - 49 employeesLondon, EnglandRead More
Founded in 2018, Neural Soft Solutions is headquartered in London with another location in Lahore, Pakistan. Their team of 12 employees provides mobile app development, web development, and UX/UI design for enterprise, midmarket, and small businesses. They focus on business services, financial services, health care, and medical industries.
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167$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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168$5,000+50 - 249 employeesLondon, EnglandHeadquartered in London, England, SCube is a midsize website development company. Established in 2005, the team specializes in Web Development, E-Commerce Development, and Mobile App Development.Read More
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169$100,000+10 - 49 employeesLondon, EnglandRead More
GBMF Tech, a software development firm, was established in 2019. Their small team is headquartered in London, United Kingdom; Citrus Heights, California and Chișinău, Moldova. The firm provides custom software development, web development, mobile app development, and e-commerce development.
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Freight CrewIndustries
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170$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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171$1,000+10 - 49 employeesLondon, EnglandRead More
Neadoo Digital is an online marketing agency based in London, England, that was established in 2012. Their team of 14 employees offers SEO, web development, PPC, conversion optimization, and content marketing services.
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172$5,000+2 - 9 employeesLondon, EnglandWebsite development firm CERKA is located in London, England and Tulum, Mexico. They provide Web Development, Branding, UX/UI Design, Web Design, and more and were launched in 2022.Read More
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173$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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174$1,000+50 - 249 employeesLondon, EnglandHygge Software is a midsize UX agency. Headquartered in Warszawa, Poland; Tallinn, Estonia; San Francisco, California and London, England, the firm was established in 2019. Their services include UX/UI Design, Custom Software Development, Web Development, Mobile App Development, and more.Read More
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HeatedIndustries
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175$10,000+2 - 9 employeesLondon, EnglandRead More
Web Epoch is a development house that was founded in 2014 and provides custom software, mobile app, and e-commerce development. The London-based team of under 10 employees mostly services mid- and enterprise-level clients, though they also support small businesses.
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KFC MSDUK AccentureIndustries
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176$5,000+2 - 9 employeesLondon, EnglandFounded in 2009, Merkur Design is an user experience design agency. Their small team is in London, England and Istanbul, Türkiye. Their team specializes in UX/UI Design, Low/No Code Development, Web Design, Web Development, and more.Read More
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177$5,000+2 - 9 employeesLondon, EnglandLondon Web Design Agency is a small web development company. Established in 2005, the team provides web development, web design, and branding. The company is located in Twickenham, United Kingdom.Read More
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178$25,000+2 - 9 employeesLondon, EnglandHeadquartered in London, England, Line20 Digital is a website development firm. They offer Web Development, Cybersecurity, Web Design, and UX/UI Design and were launched in 2016.Read More
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IGN Entertainment - Ziff DavisIndustries
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179$5,000+10 - 49 employeesLondon, EnglandWazobia Technologies is a London, England-based custom software development firm. The small team provides Custom Software Development, Web Development, Mobile App Development, Enterprise App Modernization, and more and was launched in 2019.Read More
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180$10,000+50 - 249 employeesLondon, EnglandRead More
Located in London, United Kingdom and Lahore, Pakistan, Devbox is a web development company. The midsize agency was founded in 2011. Their team focuses on web development, custom software development, IT staff augmentation, mobile app development, and more.
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