Top 100 JavaScript Development Companies in the United Kingdom
The Best of December 2025Looking 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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331$1,000+2 - 9 employeesLondon, EnglandAzantic is a Warszawa, Poland-based e-commerce development company. The small team focuses on E-Commerce Development, Web Development, Web Design, Custom Software Development, and more and was launched in 2017.Read More
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Cambridge RealityIndustries
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332Undisclosed50 - 249 employeesLondon, EnglandCodelax Creative is a web development company. Launched in 2016, the midsize agency is based in London, England and Thane, India. Their team provides Web Development, Web Design, Graphic Design, E-Commerce Development, and more.Read More
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333$10,000+2 - 9 employeesBristol, EnglandLaunched in 2018, Lunar is a software development company. The team specializes in Custom Software Development and Web Development.Read More
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Associated Press IHG (InterContinental Hotels Group) Google News Lab OpenAthens -
334$10,000+50 - 249 employeesLondon, EnglandRead More
Founded in 2007, Astwellsoft is a software development firm that offers custom software development, mobile app development, and web development services to their clients. THeir 250 employees are based out of Lviv.
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335$1,000+10 - 49 employeesLondon, EnglandRead More
UK LOGO DESIGNS LTD is a London, United Kingdom-based other digital marketing company. Established in 2010, the small team focuses on other digital marketing, web design, logo, and web development.
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336$1,000+50 - 249 employeesLeicester, EnglandRead More
Based in Ahmedabad, India, KGN Technologies is a midsize web development company. Launched in 2009, the team provides web development, e-commerce development, custom software development, and mobile app development.
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337$5,000+10 - 49 employeesGlasgow, ScotlandRead More
Spectre Creative is a small e-commerce development firm and web development company. Located in Glasgow, United Kingdom, the firm was established in 2014. Their services include e-commerce development and web development.
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338$1,000+2 - 9 employeesNorwich, EnglandRead More
SEO services firm Lead Genera is headquartered in Norwich, United Kingdom and Colorado Springs, Colorado. The small agency was launched in 2019. Their team specializes in search engine optimization, other marketing, web design, web development, and more.
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339$5,000+10 - 49 employeesLondon, EnglandRead More
A6 Digital is software agency with offices in London and Sariyer, Turkey. The firm currently includes about 7 employees. A6 Digital has specialized in web, software, and mobile app development since the firm's founding in 2012.
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AvisIndustries
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340$25,000+50 - 249 employeesLondon, EnglandZentix, an UX design company, is in Jelgava, Latvia and London, England. Founded in 2021, the midsize team specializes in UX/UI Design, E-Commerce Development, Low/No Code Development, Web Design, and more.Read More
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341$25,000+10 - 49 employeesHove, EnglandSmall e-commerce development company BrightMinded Ltd, is headquartered in Hove, England. They specialize in E-Commerce Development, Other Application Development, and Web Development and were launched in 2011.Read More
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342$5,000+10 - 49 employeesLondon, EnglandFounded in 2019, Revatics Limited is a website development firm. Their small team is headquartered in London, England and Ahmedabad, India. Their team focuses on Web Development, Mobile App Development, Custom Software Development, E-Commerce Development, and more.Read More
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343$1,000+2 - 9 employeesWare, EnglandRead More
Heavy Penguin is a digital web agency founded in 2010. Based in Ware, United Kingdom, the team specializes in web development, eCommerce development, and UX/UI design. They primarily serve clients in the eCommerce, government, and consumer products and services agencies. Heavy Penguin designed and developed a corporate website for a landscaping and building company, helping them showcase their work and attract clients. The team also implemented email and contact capabilities.
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ArgosIndustries
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344$1,000+10 - 49 employeesLondon, EnglandWhite Label Solutions is a London, England-based software development company. Established in 2013, the small team specializes in Custom Software Development, Web Development, UX/UI Design, Mobile App Development, and more.Read More
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345$10,000+10 - 49 employeesWestminster , EnglandMultivitamin Studio is a Digital Strategy company. The firm is based in Westminster , England and Truro, England. Their services include Digital Strategy and Custom Software Development.Read More
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The Racing ManagerIndustries
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346$50,000+50 - 249 employeesLondon, EnglandRead More
Founded in 2006, Vector Software Ltd is an IT outsourcing company based in L'viv, Ukraine. They have more than 50 employees that specialize in application testing and development. They mostly work with mid-market and small businesses.
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Stingray - Optical delousing solutions for fishing industry;Industries
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347$1,000+10 - 49 employeesWest Bromwich, EnglandWeb design company Al-Junaid Agency was founded in 2020. The small West Bromwich, England-based team provides Web Design, Web Development, and Search Engine Optimization.Read More
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348$10,000+2 - 9 employeesLondon, EnglandRead More
The Beaverhead Ltd is a London-based development studio. Founded in 2014, their team of fewer than 10 specializes in custom software, mobile app, and web development services. They primarily serve small to midmarket businesses.
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Big Lazy PandaIndustries
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349$50,000+2 - 9 employeesLytchett Matravers, EnglandRead More
Launched in 2019, Jupiter and the Giraffe is a small IT strategy consulting company. Their services include IT strategy consulting, web design, ux/ui design, product design, and more. The company is in Borehamwood, United Kingdom.
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RE-DefinedIndustries
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350$1,000+50 - 249 employeesКиїв, UkraineRead More
dashdevs is a custom web and mobile app development firm based in Wilmington, Del. Founded in 2010, their team of 200 serves clients in the IT, business services, and financial services sectors. Services include Swift, JavaScript, and Java development.
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FitgridIndustries
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351$25,000+2 - 9 employeesCambridge, EnglandRead More
Founded in 2003, Rubber Cheese is a web design agency. The firm focuses on web design, web development, ux/ui design, and e-commerce development and has a small team. The firm is located in Sawbridgeworth, Essex, United Kingdom and Cambridge, United Kingdom.
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352$1,000+2 - 9 employeesLondon, EnglandRead More
E-commerce development firm Hats ON Digital Agency is in Nicosia, Cyprus. Launched in 2018, the small team provides e-commerce development, social media marketing, web design, graphic design, and more.
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353Undisclosed10 - 49 employeesRawdon, EnglandFyber Digital is a branding firm. Their small team is in Rawdon, United Kingdom. The firm focuses on branding, digital strategy, web design, and web development. The firm was launched in 2010.Read More
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354$5,000+10 - 49 employeesPortsmouth, EnglandHewitt Matthews is a PPC company launched in 2016. Their small team is in Portsmouth, England and focuses on Pay Per Click, Web Development, Advertising, Social Media Marketing, and more.Read More
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355$1,000+2 - 9 employeesSpott, ScotlandRead More
Verdant Spark Ltd is a web agency based in Dunbar, England. Since 2019, their team of more than two members has offered e-commerce development, web development, and marketing strategy solutions for small businesses in the fields of e-commerce, business services, and consumer products.
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The Crafty Kit CompanyIndustries
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356$10,000+50 - 249 employeesHo Chi Minh City, VietnamIT strategy consulting company INVINCIX Solutions Private Limited was founded in 2017. Their midsize team is in Singapore, Singapore; Bhubaneswar, India; Ho Chi Minh City, Vietnam and Twickenham, United Kingdom and provides IT strategy consulting, ux/ui design, IT managed services, custom software development, and more.Read More
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XimpleIndustries
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357$10,000+10 - 49 employeesBridgham, EnglandRead More
Launched in 2015, Panic Bear Consulting is a small user experience company located in Ho Chi Minh City, Vietnam; Dunedin, New Zealand; Bridgham, United Kingdom and Dunedin, New Zealand. Their services include ux/ui design, e-commerce development, web development, logo, and more.
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358$1,000+2 - 9 employeesLondon, EnglandAgileSchemata, a SEO company, was founded in 2014. Their small team is headquartered in London, United Kingdom and provides search engine optimization, pay per click, ux/ui design, web development, and more.Read More
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359$5,000+2 - 9 employeesDoncaster, EnglandRead More
Located in Doncaster, United Kingdom, 12 Studio is an user experience company. Established in 2021, the small team provides ux/ui design, branding, and web development.
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BalbyCareIndustries
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360$25,000+2 - 9 employeesBelfast, Northern IrelandNigma Software is a software development company established in 2020. The small Belfast, Northern Ireland-based team offers Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more.Read More
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