Top 100 JavaScript Development Companies in the United Kingdom
The Best of February 2026Looking for a top JavaScript developer in the United Kingdom?
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 United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom JavaScript Developers
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31$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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32$25,000+50 - 249 employeesLondon, EnglandMidsize software development firm GoodCore Software, is headquartered in London, England; Karachi, Pakistan and Cyberjaya, Malaysia. Founded in 2005, the team specializes in Custom Software Development, Artificial Intelligence, Web Development, IT strategy consulting, and more.Read More
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PMLL GCBF Hirevine London Women's ClinicIndustries
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33$50,000+250 - 999 employeesFarnborough, EnglandOne Beyond is an UX design company. Their midsize team is headquartered in Farnborough, England; Madrid, Spain; Budapest, Hungary and Szeged, Hungary. The firm focuses on UX/UI Design, IT strategy consulting, cloud consulting & SI, IT staff augmentation, and more.Read More
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Smith & NephewIndustries
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34$10,000+10 - 49 employeesLondon, EnglandRead More
In London, England and Odesa, Ukraine, Solar Digital is a website development firm. The firm specializes in Web Development, Web Design, UX/UI Design, Custom Software Development, and more and is small.The firm was founded in 2016.
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Stark Shipping (analytical portal of marine industryIndustries
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35$25,000+250 - 999 employeesLondon, EnglandRobosoft Technologies Inc. Is a San Francisco, California-based app development company. They offer Mobile App Development, UX/UI Design, Web Development, Custom Software Development, and more and were launched in 1996.Read More
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Warner Bros. Discovery HSBC McDonalds Mercury FinanceIndustries
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36$25,000+50 - 249 employeesLondon, EnglandRead More
Located in London, England; Sydney, Australia and Sunny Isles Beach, Florida, Magora is a software development company. The midsize team specializes in Custom Software Development, Mobile App Development, Web Development, Artificial Intelligence, and more. The agency was launched in 2010.
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DanoneIndustries
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37$10,000+50 - 249 employeesL'viv, UkraineRead 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
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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39$50,000+10 - 49 employeesSarratt, EnglandCustom software development firm Clock Limited was established in 1997. The agency offers Custom Software Development, Mobile App Development, UX/UI Design, and Web Development and has a small team. The agency is headquartered in Sarratt, England and London, England.Read More
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Riot Games Mythical Society Hearst International Tennis FederationIndustries
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40$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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41$10,000+50 - 249 employeesLondon, EnglandIn London, United Kingdom, MOHARA is a business consulting company. The agency provides business consulting and is midsize.The agency was established in 2016.Read More
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42$10,000+50 - 249 employeesBarcelona, SpainHalo Lab is a midsize branding agency headquartered in Dubai, United Arab Emirates; New York, New York; 08, Andorra and Odesa, Ukraine. They offer Branding, Web Design, UX/UI Design, Graphic Design, and more and were established in 2013.Read More
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Auth0Industries
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43$10,000+10 - 49 employeesLondon, EnglandLaunched in 2014, Softblues is a small AI firm. Their services include Artificial Intelligence, Generative AI, AI Consulting, Web Development, and more. The company is headquartered in London, England; Nordhalben, Germany; New York, New York and Toronto, Canada.Read More
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PinterestIndustries
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44$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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45$10,000+50 - 249 employeesLondon, EnglandInfluential Software is a London, England-based software development firm. The midsize team focuses on Custom Software Development, Web Development, BI & big data consulting & SI, IT managed services, and more and was founded in 1993.Read More
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DeloitteIndustries
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46$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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47$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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48$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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49$10,000+2 - 9 employeesBath, EnglandRead More
Skyward Digital is a Bath, United Kingdom-based user experience design agency and website development company. They offer ux/ui design and web development and were founded in 2021.
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50$50,000+50 - 249 employeesLondon, EnglandRead More
ClerksWell is a custom software development firm. They are headquartered in London, United Kingdom and have a midsize team that focuses on custom software development, web development, IT strategy consulting, web design, and more. The firm was founded in 1996.
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51$5,000+10 - 49 employeesEdinburgh, ScotlandLumi Design is an user experience design company established in 2020. In Edinburgh, Scotland, their small team offers UX/UI Design, Mobile App Development, Custom Software Development, Web Design, and more.Read More
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Anthemis Stackwell Ovom Care MusiversalIndustries
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52$5,000+10 - 49 employeesLondon, EnglandBurst Digital is a social media marketing agency founded in 2018. Their small team is located in London, England; New York, New York and San Francisco, California. The company offers Social Media Marketing, Web Design, Branding, Search Engine Optimization, and more.Read More
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Vivienne Westwood - The Vivienne Foundation Artisan AI Cogency Global Moonbeam Car WashIndustries
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53$1,000+10 - 49 employeesManchester, EnglandSoap Media is a PPC company. They are in Manchester, England and Preston, England and have a small team that focuses on Pay Per Click, Web Design, Digital Strategy, Social Media Marketing, and more. The agency was established in 2005.Read More
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AdobeIndustries
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54$25,000+10 - 49 employeesCambridge, EnglandRead More
Custom software development firm Studio 24 is located in Cambridge, United Kingdom. The small company was founded in 1999. Their team focuses on custom software development, digital strategy, marketing strategy, web design, and more.
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55$10,000+10 - 49 employeesBrighton and Hove, EnglandDabApps is a small custom software development firm. Based in Brighton and Hove, England and Cardiff, Wales, the company was founded in 2010. Their services include Custom Software Development, Web Development, Mobile App Development, and UX/UI Design.Read More
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LODIndustries
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56$25,000+10 - 49 employeesBasingstoke, EnglandHeadquartered in Basingstoke, United Kingdom and Lincoln, United Kingdom, Profound is a digital strategy and user experience design agency. The small company was established in 2005. Their services include digital strategy and ux/ui design.Read More
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57$10,000+50 - 249 employeesLondon, EnglandWebsite development company Snotor was established in 2007. They are in Rīga, Latvia; London, England and Khmel'nyts'kyi, Ukraine and have a midsize team. Snotor provides Web Development, Mobile App Development, UX/UI Design, IT staff augmentation, and more.Read More
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Defero Hypefill Wellics IsobioticsIndustries
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58$100,000+50 - 249 employeesNewcastle upon Tyne, EnglandHedgehog lab is a midsize mobile application development firm. They specialize in Mobile App Development, Artificial Intelligence, UX/UI Design, Custom Software Development, and more and were launched in 2007. The company is headquartered in Newcastle upon Tyne, England.Read More
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Aviva AJ Bell Tesco Bank Under ArmourIndustries
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59Undisclosed50 - 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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60$1,000+10 - 49 employeesBoston, MARead More
Seahawk Media is a web design and development company based in Boston, but with offices around the world. Founded in 2015, they also provide SEO, branding, and UX/UI design services. They're also a GoDaddy partner.
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Check out a JavaScript Developers in United Kingdom with the most new reviews in the past 12 months.
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