Top 100 JavaScript Development Companies in the United Kingdom
The Best of August 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$75,000+250 - 999 employeesLincoln, EnglandCodal is a website development company. The midsize Chicago, Illinois-based team provides Web Development, UX/UI Design, and E-Commerce Development. The company was founded in 2009.Read More
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Baxter Charles Schwab ExpressMed Cocktail CourierIndustries
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32$50,000+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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33$10,000+250 - 999 employeesLondon, EnglandSENLA is a midsize software development company. Located in Warszawa, Poland; London, England and Zagreb, Croatia, the agency was established in 2012. Their team focuses on Custom Software Development, Web Development, Mobile App Development, Blockchain, and more.Read More
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Abbott BOSCH KPMG Western UnionIndustries
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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$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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36$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
Clients
PMLL GCBF Hirevine London Women's ClinicIndustries
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37$10,000+250 - 999 employeesLondon, EnglandInstinctools is a midsize software development company established in 2000. Their team provides Custom Software Development, Artificial Intelligence, BI & big data consulting & SI, Mobile App Development, and more. The company is headquartered in Stuttgart, Germany; Warszawa, Poland; Mississauga, Canada and Wilmington, Delaware.Read More
Clients
Daimler Fujitsu Nostrum SpexAIIndustries
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38$10,000+50 - 249 employeesLondon, EnglandRead More
Artificial intelligence company TechnoYuga was launched in 2020. Located in New Delhi, India; Surat, India; Toronto, Canada and Orland Park, Illinois, their midsize team focuses on Artificial Intelligence, Custom Software Development, Mobile App Development, and Web Development.
Clients
Gfacility Akasha Air mfine DecathlonIndustries
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39$25,000+50 - 249 employeesLondon, EnglandWebbyLab is an IoT development company founded in 2011. They are based in Kyiv, Ukraine and London, England and have a midsize team. Their services include IoT development, Artificial Intelligence, Web Development, and AI Agents.Read More
Clients
AMG MercedesIndustries
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40$5,000+250 - 999 employeesManchester, EnglandRead More
Infograins Software Solutions is a midsize Blockchain company launched in 2011. Their team offers Blockchain, Artificial Intelligence, Custom Software Development, Mobile App Development, and more. The firm is headquartered in New York, New York; Indore, India; London, England and Barangaroo, Australia.
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41$5,000+10 - 49 employeesLondon, EnglandBurst Digital is a web design company. Established in 2018, the company is located in London, England; New York, New York and San Francisco, California. The small team offers Web Design, Web Development, Search Engine Optimization, Branding, and more.Read More
Clients
Vivienne Westwood - The Vivienne Foundation Artisan AI Cogency Global Moonbeam Car WashIndustries
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42$10,000+50 - 249 employeesLondon, EnglandSnotor is a midsize app development firm. Established in 2007, the team provides Mobile App Development, Web Development, IT staff augmentation, Custom Software Development, and more. The firm is in Rīga, Latvia; London, England and Khmel'nyts'kyi, Ukraine.Read More
Clients
HUDD Hypefill Isobiotics WellicsIndustries
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43$10,000+50 - 249 employeesLondon, EnglandFounded in 2013, Halo Lab is a web design agency. Their midsize team is located in Dubai, United Arab Emirates; New York, New York; 08, Andorra and Odesa, Ukraine. Their services include Web Design, Artificial Intelligence, Web Development, Custom Software Development, and more.Read More
Clients
Auth0Industries
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44$10,000+50 - 249 employeesKingston upon Thames, EnglandRead 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.
Clients
OnlyFansIndustries
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45$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
Clients
Riot Games Mythical Society Hearst International Tennis FederationIndustries
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46$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.
Clients
DanoneIndustries
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47$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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48$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
Clients
Warner Bros. Discovery HSBC McDonalds Mercury FinanceIndustries
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49$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.
Clients
WWF Powerleague Give A Grad A Go RSL AwardsIndustries
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50$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
Industries
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51$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
Clients
DeloitteIndustries
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52$1,000+50 - 249 employeesLondon, EnglandSeahawk Media is a midsize web design company. Launched in 2015, the team specializes in Web Design, Web Development, Branding, Digital Strategy, and more. The firm is in Boston, Massachusetts; San Diego, California and London, England.Read More
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53$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
Clients
PinterestIndustries
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54$10,000+10 - 49 employeesLondon, EnglandUPDIVISION, a web development firm, was launched in 2010. The agency focuses on Web Development, Mobile App Development, UX/UI Design, Custom Software Development, and more and has a small team.Read More
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55$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
Clients
AdobeIndustries
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56$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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57$10,000+10 - 49 employeesLondon, EnglandTLVTech, a web development company, is in Tel Aviv-Yafo, Israel; New York, New York and London, England. The firm specializes in Web Development, Mobile App Development, Artificial Intelligence, cloud consulting & SI, and more and has a small team.The firm was founded in 2017.Read More
Clients
Snyk Coretigo INX MetrofunIndustries
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58$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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59$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
Clients
Anthemis Stackwell Ovom Care MusiversalIndustries
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60$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.
Industries
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