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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421Undisclosed2 - 9 employeesLondon, EnglandWebventure Solutions Limited, a web development company, is based in London, United Kingdom. The small firm was launched in 2021. Their team offers web development, custom software development, IT strategy consulting, mobile app development, and more.Read More
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422$10,000+2 - 9 employeesLondon, EnglandAtEnbi is a software development firm. Their small team is headquartered in Warszawa, Poland and London, England. The firm provides Custom Software Development, Web Development, UX/UI Design, Mobile App Development, and more.Read More
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423$1,000+2 - 9 employeesLondon, EnglandLocated in Brampton, Canada and London, England, Devinti is a small social media marketing company. The team specializes in Social Media Marketing and Pay Per Click.Read More
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424$5,000+2 - 9 employeesLondon, EnglandSoftSyncDev is an UX design agency. The Karachi, Pakistan-based team focuses on UX/UI Design and Custom Software Development.Read More
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425Undisclosed2 - 9 employeesLondon, EnglandTKM Consultants, a Business Consulting company, was established in 2010. The team focuses on Business Consulting and Content Marketing.Read More
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426$1,000+10 - 49 employeesLondon, EnglandBrains Hub Ltd is an Other Digital Marketing company. Located in London, England, the firm specializes in Other Digital Marketing and Ecommerce Marketing.Read More
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427$25,000+10,000+ employeesMumbai, IndiaRead More
Datamatics (formerly TechJini, Inc) is a mobile app development company based in Bangalore, India with an additional office in Princeton, N.J. The company was founded in 2005 and has grown since then to a team of about 300. They provide mobile app and web development, UX/UI design, and IT strategy consulting.
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HoneywellIndustries
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428$1,000+10 - 49 employeesLondon, EnglandBritechx Digital is a branding agency launched in 2017. The small team focuses on Branding and Search Engine Optimization.Read More
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429$1,000+2 - 9 employeesLondon, EnglandDigitaal Agency, a web design agency, was launched in 2021. The agency focuses on Web Design and Web Development, and is small.Read More
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430Undisclosed10 - 49 employeesLondon, EnglandHeadquartered in London, England, Resalt is a web design company. Founded in 2022, the team focuses on Web Design and UX/UI Design.Read More
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431$5,000+10 - 49 employeesLondon, EnglandBased in London, England, Techpax is a SEO agency. They specialize in Search Engine Optimization and Mobile App Development.Read More
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432$1,000+10 - 49 employeesLondon, EnglandSnooze Tech is a custom software development company. In London, England, their small team offers Custom Software Development, Web Development, IT strategy consulting, E-Commerce Development, and more. The agency was launched in 2024.Read More
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433Undisclosed2 - 9 employeesLondon, EnglandMobile application development firm Digitransformer Ltd offers Mobile App Development and Pay Per Click. They were founded in 2020.Read More
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434$50,000+10 - 49 employeesLondon, EnglandMomin Solutions is a business intelligence company founded in 2010. The agency focuses on BI & big data consulting & SI and cloud consulting & SI, and is small.Read More
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435$5,000+2 - 9 employeesLondon, EnglandEstablished in 2021, Remote Skills is a small custom software development company. Their team provides Custom Software Development, Artificial Intelligence, Generative AI, API Development, and more. The agency is based in London, England.Read More
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436$10,000+10 - 49 employeesLondon, EnglandEstablished in 2015, Muljin is a software development firm. The small team offers Custom Software Development and Mobile App Development.Read More
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437Undisclosed10 - 49 employeesLondon, EnglandBazleDev is a small Digital Strategy company in London, England and İstanbul, Türkiye. The team focuses on Digital Strategy and Search Engine Optimization.Read More
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438$5,000+2 - 9 employeesLondon, EnglandCloudexis Technolabs is an app development company in Ahmedabad, India. The small firm was established in 2020. Their team provides mobile app development, custom software development, and web development.Read More
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439$1,000+Freelancer employeesBromley, EnglandSkya Designs Limited is a small web design company. They provide web design, web development, and search engine optimization and were founded in 2020. The agency is based in Bromley, United Kingdom.Read More
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440$10,000+50 - 249 employeesLos Angeles, CARead More
BN Solutions Inc is a web design agency and user experience company. Their midsize team is located in Sheridan, Wyoming. The company focuses on web design and ux/ui design.
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441$25,000+50 - 249 employeesChipping Ongar, EnglandRead More
Magecom is an e-commerce and web development company headquartered in Kharkiv, Ukraine. Founded in 2012, their team of over 50 serves mostly small and midmarket businesses in the e-commerce industry.
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Ahmad TeaIndustries
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442Undisclosed2 - 9 employeesSouth Croydon, EnglandOasis Private Limted is a software development company established in 2022. Their team offers Custom Software Development and BI & big data consulting & SI.Read More
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443$1,000+10 - 49 employeesLondon, EnglandGensols Technology is an IT strategy consulting company. They are located in London, England and have small team of experts. Their services include IT strategy consulting and IT staff augmentation.Read More
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444$1,000+2 - 9 employeesLondon, EnglandSoftware development firm Roberts Tech Consulting was established in 2024. Their small team is headquartered in London, England. Roberts Tech Consulting specializes in Custom Software Development, AI Consulting, and Web Development.Read More
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445$1,000+10 - 49 employeesHounslow, EnglandL2 Global Technologies pvt ltd. Is a CRM consulting and SI company. The Hounslow, England-based agency was launched in 2014. Their services include CRM consulting and SI and Web Development.Read More
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PennarIndustries
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446$1,000+10 - 49 employeesGreater London, EnglandUXD Consults, a branding agency, is based in Greater London, England. Founded in 2023, the team focuses on Branding and UX/UI Design.Read More
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447$1,000+2 - 9 employeesLondon, EnglandPunterDigital is a website development company. Launched in 2018, the company is in Liverpool, England and London, England. Their services include Web Development and Custom Software Development.Read More
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448$1,000+10 - 49 employeesLondon, EnglandRead More
W3 Lab Digital Solutions, a web development firm, was established in 2016. The firm specializes in web development, conversion optimization, pay per click, search engine optimization, and more and has a small team.
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449$1,000+2 - 9 employeesLondon, EnglandWeb design company DigiBulbo is based in London, United Kingdom. The small company was established in 2022. Their team provides web design, web development, mobile app development, and application management & support.Read More
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450$5,000+2 - 9 employeesLondon, EnglandPortox is an e-commerce development firm. Established in 2020, the team specializes in e-commerce development, digital strategy, web development, mobile app development, and more. Their small company is headquartered in Porto, Portugal; Madrid, Spain and Firenze, Italy.Read More
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Unicef United Nations Samsung Porto VentureIndustries
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