Top 100 JavaScript Development Companies in London
The Best of December 2025Looking for a top JavaScript developer in London?
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 London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London JavaScript Developers
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511$5,000+2 - 9 employeesChatham, EnglandBrave Little Tank is a web development firm based in Chatham, England. Their services include Web Development and Web Design.Read More
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512$1,000+2 - 9 employeesArdeley, EnglandBombinate Web Design is a web design company. They are in Milton Keynes, England and Ardeley, England, and their services include Web Design and Web Development.Read More
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513$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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514Undisclosed10 - 49 employeesRoyal Tunbridge Wells, EnglandCoding Sprint, a custom software development company, was launched in 2024. The firm provides Custom Software Development and IT strategy consulting, and is small.Read More
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515$10,000+2 - 9 employeesLacey Green, EnglandBrandon Cross is a software development firm. They are headquartered in Lacey Green, England, and their services include Custom Software Development and Web Development.Read More
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516$10,000+10 - 49 employeesReading, EnglandCode23 is a small software development company headquartered in Reading, England. The team specializes in Custom Software Development and E-Commerce Development.Read More
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517$5,000+2 - 9 employeesLuton, EnglandLaunch90 Ltd is a web design company launched in 2025. The small team specializes in Web Design and UX/UI Design.Read More
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518$10,000+2 - 9 employeesGuilden Morden, EnglandRead More
Crowers Limited, a custom software development company, is based in Guilden Morden, United Kingdom. The company specializes in custom software development, mobile app development, web development, web design, and more and has a small team.The company was founded in 2017.
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XylemIndustries
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519$1,000+2 - 9 employeesMortimer Common, EnglandRead More
I-Next Ltd. is a digital firm based in Reading, England With a team of fewer than 10, they lend their expertise in web development, IT managed services, and e-commerce development to clients ranging from small and midmarket businesses, from industries such as advertising and marketing, business services, and media.
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EdenredIndustries
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520$10,000+10 - 49 employeesBrighton and Hove, EnglandRead More
DabApps is a web and mobile application development agency based in Brighton, England. They were founded in 2010 and have a staff of 21 employees. They specialize in custom software, web, and mobile app development for primarily small business clients in the business services, consumer products, and education industries.
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LODIndustries
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521$10,000+2 - 9 employeesCoggeshall, EnglandRead More
Small web development company We Create Digital, is headquartered in Coggeshall, England. They offer Web Development, E-Commerce Development, Web Design, Search Engine Optimization, and more and were established in 2011.
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522$1,000+2 - 9 employeesSouthend-on-Sea, EnglandBased in Southend-on-Sea, England, Bug Media is a small web development firm. The team offers Web Development and E-Commerce Development.Read More
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523$50,000+10 - 49 employeesEarley, EnglandLaunched in 2019, VA Software Solutions ltd is a custom software development company. Based in Earley, England and Sofia, Bulgaria, the team focuses on Custom Software Development and Web Development.Read More
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524$50,000+10 - 49 employeesEast Sussex, EnglandRead More
Bright Interactive is a software development company Based in East Sussex, United Kingdom, that was founded in 1999. Their team of 32 provides custom software development, web development, UX/UI design.
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Flight CentreIndustries
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525$1,000+2 - 9 employeesSouthend-on-Sea, EnglandBuzzBoost Digital is a website development company in Southend-on-Sea, England. The team focuses on Web Development and Web Design.Read More
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526$5,000+2 - 9 employeesBrighton, EnglandRead More
MAJOR is a small web development firm. Headquartered in Brighton, United Kingdom, the agency was founded in 2007. Their team focuses on web development, branding, web design, and custom software development.
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527$5,000+2 - 9 employeesFarnham, EnglandFounded in 2020, Crockwell Solutions is a small software development company. Their services include Custom Software Development and cloud consulting & SI.Read More
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528$1,000+2 - 9 employeesRochford, EnglandEastway Digital Media Ltd is a small Digital Strategy company. They provide Digital Strategy and Conversion Optimization and were founded in 2023.Read More
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529$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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530$10,000+10 - 49 employeesBasingstoke, EnglandRead More
Founded in 2005, Bigger Picture is a web development agency that offers web development, web design, and UX/UI design services to their mid-market and small business clients. Their 50 employees are based out of offices in Katowice, Poland and Basingstoke, United Kingdom.
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531$50,000+10 - 49 employeesBrighton, EnglandRead More
Buffalo is a web design and development company in Brighton, England. Founded in 2006, they have about 16 employees that serve mostly small-business and midmarket clients in the media, e-commerce, and advertising sectors. Services include web development, web design, and branding.
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ESIIndustries
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532$10,000+2 - 9 employeesOld Warden, EnglandHypernuvo Ltd is a Digital Strategy company. They provide Digital Strategy and Other Digital Marketing and were launched in 2021.Read More
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533$10,000+50 - 249 employeesHong Kong, Hong KongHodfords is a software development company established in 2000. Located in Hong Kong, Hong Kong; Da nang, Vietnam and Brighton, United Kingdom, their midsize team offers custom software development, web development, mobile app development, Artificial Intelligence, and more.Read More
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534$10,000+2 - 9 employeesBrighton and Hove, EnglandRetain is a web development firm. The small Brighton and Hove, England-based company was established in 2019. Their services include Web Development, E-Commerce Development, and Web Design.Read More
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535Undisclosed10 - 49 employeesBrighton, EnglandRead More
Creative Stack Ltd, a software development firm, is located in Brighton, United Kingdom. The small team offers custom software development, web development, mobile app development, e-commerce development, and more. The company was founded in 2010.
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536$25,000+2 - 9 employeesBordon, EnglandPivale is a Business Consulting company. The Bordon, England-based agency was founded in 2008. Their team specializes in Business Consulting and Web Design.Read More
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537$10,000+10 - 49 employeesMilton Keynes, EnglandFounded in 2009, PODTECH is a small Milton Keynes, England-based IT strategy consulting company. Their team offers IT strategy consulting and Custom Software Development.Read More
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Royal Bank of ScotlandIndustries
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538$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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539$5,000+2 - 9 employeesBattle, EnglandMass is a Battle, United Kingdom-based software development company. The small company was launched in 2023. Their services include custom software development and ux/ui design.Read More
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Lighthouse LondonIndustries
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540$5,000+Freelancer employeesBedford, EnglandFreestyle Internet, a website development firm, is located in Bedford, England. Launched in 2003, the team focuses on Web Development and Digital Strategy.Read More
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