Top 100 JavaScript Development Companies in the United Kingdom
The Best of April 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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181Undisclosed250 - 999 employeesLondon, EnglandApp development firm Holycode was launched in 2014. Located in Beograd, Serbia; Novi Sad, Serbia; Niš, Serbia and Binningen, Switzerland, their midsize team provides Mobile App Development, Application Management & Support, ERP consulting and SI, Custom Software Development, and more.Read More
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182$25,000+10 - 49 employeesLondon, EnglandFounded in 2019, Drewl is a small UX design company. Their team specializes in UX/UI Design, Web Development, and Web Design. The firm is in London, England.Read More
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183$25,000+10 - 49 employeesLondon, EnglandBlott is an AI development company established in 2019. Their small team is located in London, England and Colombo, Sri Lanka. The firm focuses on Artificial Intelligence, UX/UI Design, Web Development, Mobile App Development, and more.Read More
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184$5,000+2 - 9 employeesBristol, EnglandRead More
Noughts & Ones is a Squarespace and Shopify agency based in Bristol, United Kingdom. Founded in 2017, this company has three employees. Services provided by Noughts & Ones include web design, web development, and e-commerce development for small and midmarket companies.
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DryrobeIndustries
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185$50,000+10 - 49 employeesSHEFFIELD, EnglandRead More
REYT is a web design company located in Sheffield, United Kingdom. The small firm was founded in 2021. Their team provides web design, ux/ui design, web development, and mobile app development.
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186$100,000+50 - 249 employeesEdinburgh, ScotlandClearSky is a website development firm. Located in Edinburgh, Scotland and Glasgow, Scotland, their midsize team provides Web Development, Custom Software Development, IT staff augmentation, and Mobile App Development. The firm was founded in 2018.Read More
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187$25,000+10 - 49 employeesBirmingham, EnglandEconify is a cloud consulting & SI company. Established in 2001, the agency is in New York, New York and Birmingham, England. The small team focuses on cloud consulting & SI, Web Development, Mobile App Development, E-Commerce Development, and more.Read More
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188$25,000+10 - 49 employeesBridgnorth, EnglandRead More
Clickingmad Ltd. is a full service digital agency based in Bridgnorth, England, and founded in 2000. Their team of 4 employees specialize in web design, e-commerce development, and SEO for primarily midmarket clients in the non-profit, business services, and consumer products industries.
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Mars CorporationIndustries
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189$25,000+10 - 49 employeesChantry, EnglandRead More
Established in 2022, OnTheBlockGaming is a. The company offers and has a small team. The company is headquartered in , United Kingdom.
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OutboundlessIndustries
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190$5,000+10 - 49 employeesHighworth, EnglandRead More
Based in Highworth, United Kingdom, Reuben Digital Ltd is a digital strategy company. The small team provides digital strategy, search engine optimization, web design, ux/ui design, and more. The agency was founded in 2000.
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Jigsaw Business SolutionsIndustries
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191$10,000+10 - 49 employeesLondon, EnglandHeadChannel Consulting, a software development company, is based in London, England; Katowice, Poland and New York, New York. The small team provides Custom Software Development, Artificial Intelligence, UX/UI Design, Web Development, and more and was founded in 2004.Read More
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The William Pears GroupIndustries
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192$50,000+10 - 49 employeesSheffield, EnglandRead More
The Curve, a software development firm, is in Sheffield, United Kingdom. They specialize in custom software development, web development, and mobile app development and were founded in 2019.
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193$10,000+10 - 49 employeesManchester, EnglandApplication development company Foresight Mobile is based in Manchester, England; Birmingham, England and London, England. They offer Mobile App Development, Custom Software Development, Web Development, and API Development and were launched in 2016.Read More
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Table.co Swrve Levi Strauss EAIndustries
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194$10,000+10 - 49 employeesBelfast, Northern IrelandRead More
Zesty is a full-service digital agency based in Dublin, Ireland, with additional offices in Belfast, Northern Ireland and London, England. Zesty was founded in 1996 and has 37 employees. Services offered by Zesty include web development, web design, and digital strategy.
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Ulster OrchestraIndustries
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195$1,000+10 - 49 employeesColchester, England&Element is a small web development company established in 2015. Their team focuses on Web Development, Graphic Design, Web Design, UX/UI Design, and more. The firm is headquartered in Colchester, England.Read More
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Skipper My Boat -
196$25,000+50 - 249 employeesLondon, EnglandIncepteo Labs is a midsize artificial intelligence development company. The London, England-based company was founded in 2007. Their services include Artificial Intelligence, Mobile App Development, UX/UI Design, Custom Software Development, and more.Read More
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GeodisIndustries
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197$50,000+50 - 249 employeesPoole, EnglandRead More
Ready4S is a full-service web and mobile app development company based in Cracow, Poland, with offices in the UK and Ukraine. Started in 2011, this team of 25+ creates digital solutions for organizations both large and small.
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UberIndustries
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198$5,000+250 - 999 employeesCardiff, WalesIT staff augmentation company DigiMantra was founded in 2012. Their midsize team is headquartered in Sahibzada Ajit Singh Nagar, India; Dover, Delaware; Cardiff, Wales and Dubai, United Arab Emirates. DigiMantra focuses on IT staff augmentation, Mobile App Development, E-Commerce Development, Social Media Marketing, and more.Read More
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199$5,000+50 - 249 employeesLightwater, EnglandRead More
Ray Solutions Ltd is an IT staff augmentation company. They specialize in IT staff augmentation, custom software development, Artificial Intelligence, web development, and more and were established in 2012. Their midsize team is Lightwater, United Kingdom-based.
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Bright NetworkIndustries
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200$10,000+2 - 9 employeesChorleywood, EnglandWebsite development firm Gemstone was founded in 2008. Their small team is headquartered in Chorleywood, England. Gemstone provides Web Development, BI & big data consulting & SI, Mobile App Development, and E-Commerce Development.Read More
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Simply CookIndustries
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201$1,000+2 - 9 employeesLondon, EnglandBased in Novi Sad, Serbia and London, England, Deutrix is a website development company. The small team provides Web Development, Custom Software Development, Web Design, and Artificial Intelligence. The company was founded in 2019.Read More
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202$5,000+10 - 49 employeesLondon, EnglandRead More
Ignite is a branding firm. They specialize in branding, social media marketing, digital strategy, web design, and more and were launched in 2001. The agency is located in London, United Kingdom; New York, New York; Milano, Italy and Port Orange, Florida.
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203$10,000+10 - 49 employeesRoyal Tunbridge Wells, EnglandRead More
Chilliapple Ltd., a mobile app development company, was launched in 2008. The small team specializes in mobile app development, e-commerce development, custom software development, and web development. The company is based in Kent, United Kingdom and , United Kingdom.
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QuickvitIndustries
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204$1,000+50 - 249 employeesLondon, England, UK, EnglandRead More
Golden Owl Consulting Ltd is a development agency founded in 2015 in Ho Chi Minh, Vietnam, with no more than 250 employees. They are experts in mobile app development, web development, and UX/UI design services.
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DELEGATE CONNECTIndustries
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205$50,000+10 - 49 employeesBrighton, EnglandWeb development firm Buffalo was established in 2006. The company offers Web Development, Web Design, Branding, and E-Commerce Development and has a small team. The company is headquartered in Brighton, England.Read More
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ESIIndustries
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206Undisclosed10,000+ employeesLondon, EnglandRead More
Zensar Technologies is a software services company founded in 1991, currently employing over 10,000. Their headquarters is in Pune, India, with multiple offices worldwide in India, Europe, and the U.S. They offer services in ERP consulting and SI, application management and support, and custom software development. They serve clients in a variety of industries, including financial services, IT, and advertising and marketing.
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207$10,000+2 - 9 employeesLondon, EnglandRead More
Lemonat is a digital product design agency that was founded in 2012. Their 9-person team is headquartered in London with offices in Istanbul. They offer UX/UI design, web design, and digital strategy services to midmarket companies in the spaces of financial services, arts and entertainment, and e-commerce.
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Turkcell (Gsm operator)Industries
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208$10,000+2 - 9 employeesBristol, EnglandOhana Studio is a web design agency founded in 2020. Their small team is based in Bristol, England. Their services include Web Design, Web Development, Low/No Code Development, Digital Strategy, and more.Read More
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Dataweavers Triggerfish NHS Passion for SomersetIndustries
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209$10,000+10 - 49 employeesLondon, EnglandLaunched in 2001, Artistsweb is a web design company. The small London, England-based team provides Web Design, UX/UI Design, Custom Software Development, Web Development, and more.Read More
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BMW Hurom Jaeger LeCoultre Alveena CasaIndustries
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210$5,000+10 - 49 employeesLeicester , EnglandBulb Studios is a Digital Strategy company. The small Leicester , England-based team offers Digital Strategy, IoT development, Branding, Content Marketing, and more. The agency was founded in 2007.Read More
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Jaguar Land RoverIndustries
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