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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391Undisclosed10 - 49 employeesLondon, EnglandRead More
Activate Media is a London-based digital design and development agency. Founded in 1992, the team of 15 specializes in web development and design, UX/UI design, digital strategy, and more. They work with midmarket businesses, small businesses, and enterprises.
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Agri-Pro Focus -
392$25,000+50 - 249 employeesLondon, EnglandIntegrella is a custom software development firm established in 2007. The company focuses on Custom Software Development, Web Development, IT staff augmentation, API Development, and more and has a midsize team. The company is located in London, England; Ahmedabad, India and Dubai, United Arab Emirates.Read More
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393$5,000+10 - 49 employeesLondon, EnglandHeka Software is a London, England-based AI firm. They specialize in Artificial Intelligence, AI Consulting, AI Agents, Custom Software Development, and more and were launched in 2025.Read More
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394$1,000+10 - 49 employeesDenton, EnglandDevOasis Technologies is a Denton, England-based IT staff augmentation company. The small team offers IT staff augmentation, Data Annotation Services, Web Development, Mobile App Development, and more and was established in 2023.Read More
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395$25,000+10 - 49 employeesLondon, EnglandCustom software development firm DEVITGROUP LTD was launched in 2020. They are headquartered in London, England and have a small team. DEVITGROUP LTD focuses on Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more.Read More
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396$10,000+10 - 49 employeesLondon, EnglandRead More
Aegasis Labs is an artificial intelligence company. The small team is in London, United Kingdom. Their services include Artificial Intelligence, custom software development, BI & big data consulting & SI, blockchain, and more.
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397$10,000+10 - 49 employeesLondon, EnglandOnekode, Software Development Company is an application development firm launched in 2023. The company focuses on Mobile App Development, Low/No Code Development, Web Development, Web Design, and more and has a small team. The company is located in Islamabad, Pakistan and London, England.Read More
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Ayjynt Vanalyzer Capstone Real Estate Trelix – A Heavy Machinery Rental PlatformIndustries
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398$10,000+50 - 249 employeesLondon, EnglandLaunched in 2020, Moonshot Partners is a IT strategy consulting company. The midsize team offers IT strategy consulting, custom software development, web development, mobile app development, and more. The agency is headquartered in London, United Kingdom.Read More
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399$25,000+50 - 249 employeesReading, EnglandWorth Digital is a web design agency. They are in Reading, England and Rijswijk, Netherlands. Their team provides Web Design and UX/UI Design.Read More
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400$5,000+2 - 9 employeesLondon, EnglandFounded in 2021, Nova Digital Agency is a advertising company. Their small team is in London, United Kingdom and London, United Kingdom and specializes in advertising, branding, conversion optimization, search engine optimization, and more.Read More
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401$10,000+10 - 49 employeesLondon, EnglandRead More
Codepunch Ltd is a London, United Kingdom-based mobile application development firm. The small team specializes in mobile app development, web development, custom software development, web design, and more. The company was launched in 2022.
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402$5,000+2 - 9 employeesEccles, EnglandLaunched in 2021, Darkside is a small Eccles, England-based web design agency. Their team offers Web Design and Logo.Read More
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403Undisclosed10 - 49 employeesBristol , EnglandRead More
Atomic Smash is a WordPress and WooCommerce studio headquartered in Bristol, England. Founded in 2010, they now have about 12 employees who specialize in web development, web design, and UX/UI design services. Their clients are typically small businesses in the arts, entertainment, and music as well as business services industries.
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Positive NewsIndustries
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404$1,000+10 - 49 employeesLondon, EnglandOlive IT is a digital strategy company based in London, England and Dhaka, Bangladesh. The small team specializes in digital strategy, search engine optimization, web development, e-commerce development, and more. The firm was established in 2022.Read More
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405$5,000+2 - 9 employeesNorwich, EnglandWeb development firm Tessellate Design Studio was established in 2008. The firm focuses on Web Development, Graphic Design, and Web Design and has a small team. The firm is located in Norwich, England.Read More
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406$1,000+2 - 9 employeesColchester, EnglandRead More
KYRO Design is a web design agency. Their small team is in Colchester, United Kingdom. The firm provides web design, web development, branding, and search engine optimization.
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407$5,000+10 - 49 employeesHessle, EnglandRead More
Click Digital Solutions is a web development company founded in 2019 in Hessle, U.K. With over 15 employees on board, they offer a wide range of services, the main ones being web development, mobile app development, custom software development, web design, and graphic design. They serve small businesses in healthcare, e-commerce, education, and legal industries, among others.
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StackersIndustries
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408$10,000+10 - 49 employeesCoventry, EnglandImage Plus Ltd is a branding agency founded in 2001. They are located in Coventry, United Kingdom and have a small team. Their services include branding, search engine optimization, web design, graphic design, and more.Read More
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409$1,000+2 - 9 employeesHarlow, EnglandRead More
Fintek Software is a Harlow, United Kingdom-based custom software development company. The small firm was founded in 2014. Their team provides custom software development, web development, mobile app development, and other application development.
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410$1,000+Freelancer employeesLondon, EnglandRead More
Established in 2020, LK agency is a small web design agency located in London, United Kingdom. Their services include web design, video production, web development, and mobile app development.
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411$5,000+2 - 9 employeesLondon, EnglandRead More
Pixable is a small CRM consulting and SI company. They provide CRM consulting and SI, custom software development, web development, mobile app development, and more and were founded in 2013. The agency is based in London, United Kingdom.
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412$10,000+10 - 49 employeesLondon , EnglandRead More
Danger Farms is a London-based digital agency founded in 2012. With their team of over 10 people, they provide custom software development, digital strategy, and UX/UI design solutions primarily to enterprise-level clients. They have experience in business and financial services, as well as retail.
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Lloyd's RegisterIndustries
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413$5,000+50 - 249 employeesLincoln, EnglandRead More
In Jaipur, India and Noida, India, Aelum Consulting is a business consulting company. The company offers business consulting, IT managed services, mobile app development, web development, and more and is midsize.The company was launched in 2016.
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414$1,000+50 - 249 employeesTeddington, EnglandEstablished in 2016, Arramton Infotech is a website development firm. The firm offers Web Development, Mobile App Development, Search Engine Optimization, and Pay Per Click and has a midsize team.Read More
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Bars of BeautyIndustries
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415$5,000+10 - 49 employeesLondon, EnglandRead More
Pixelpk Technologies is a custom software development company launched in 2018. The firm specializes in custom software development, mobile app development, social media marketing, search engine optimization, and more and has a small team.
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416$5,000+50 - 249 employeesManchester, EnglandHashbyt - AI-First Leading Frontend & UI/UX SaaS Partner is an user experience design company. Located in Manchester, England, their midsize team provides UX/UI Design, Web Development, Custom Software Development, Enterprise App Modernization, and more. The company was launched in 2017.Read More
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417$10,000+10 - 49 employeesBirmingham, EnglandSEO services firm Fast Fwd Multimedia Ltd. Was launched in 2011. The firm provides search engine optimization, web design, advertising, ux/ui design, and more and has a small team.Read More
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418Undisclosed10 - 49 employeesKingston Upon Thames, England7dots, an user experience design company, was launched in 2009. The small Kingston Upon Thames, United Kingdom-based team focuses on ux/ui design, e-commerce development, search engine optimization, web design, and more.Read More
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419$1,000+10 - 49 employeesLondon , EnglandRead More
Incisive Edge [solutions] Limited is a web design company. They are in London , United Kingdom and have a small team that focuses on web design, search engine optimization, content marketing, conversion optimization, and more. The agency was founded in 2009.
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420$25,000+10 - 49 employeesPeterborough, EnglandRead More
Artificially is a website development company launched in 2020. The firm focuses on Web Development, UX/UI Design, CRM consulting and SI, ERP consulting and SI, and more and has a small team.
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Smart DrivingIndustries
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