Top 100 JavaScript Development Companies in London

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Top 100 JavaScript Development Companies in London

January 2023

Looking 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. 

Jump to Most Reviewed Companies

List of the Best London JavaScript Developers

  • 241
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Crystal Logic is a software development firm headquartered in Lviv, Ukraine. The small agency was established in 2018. Their services include custom software development, e-commerce development, mobile app development, IT staff augmentation, and more.

    Industries

    Notable Project

    Crystal Logic tackles the development needs of a food delivery firm. Their tech stack includes Python, Xamarin, JavaScript, and React. The team now continues to support the client as they expand their features.

    "We appreciate their responsiveness and their sense of responsibility."

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  • 242
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom
    Drewl is a website development company headquartered in London, United Kingdom. The small agency was founded in 2019. Their team focuses on web development, web design, ux/ui design, digital strategy, and more.
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  • 243
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom
    Help Me Buddy IT Pvt Ltd is a small Anand, India-based website development firm. They focus on web development, e-commerce development, custom software development, search engine optimization, and more and were established in 2021.
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  • 244
    • $5,000+
    • 2 - 9 employees
    • COVENT GARDEN,
    Duel Marketing, a small conversion optimization company, is located in COVENT GARDEN, United Kingdom. They offer conversion optimization, search engine optimization, mobile & app marketing, web design, and more and were founded in 2017.
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  • 245
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom
    Bing Digital is a small UX agency. They offer ux/ui design, conversion optimization, digital strategy, e-commerce development, and more and were founded in 1999. The agency is headquartered in London, United Kingdom and Rochester, United Kingdom.

    Industries

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  • 246
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom
    OMdeSIGN is a small web design company. Headquartered in London, United Kingdom and Brighton, United Kingdom, the agency was founded in 2004. Their team specializes in web design, e-commerce development, web development, branding, and more.

    Industries

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  • 247
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom
    Hartley Lab is a Pune, India-based web development firm. The midsize team specializes in web development, custom software development, blockchain, digital strategy, and more. The firm was launched in 2011.

    Industries

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  • 248
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom
    Established in 2014, Steer73 is a software development company. The firm provides custom software development, mobile app development, web development, enterprise app modernization, and more and has a small team. The firm is based in London, United Kingdom.

    Industries

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  • 249
    • Scheduling

      4.6
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      5.0
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    • $50,000+
    • 50 - 249 employees
    • Hertford, United Kingdom

    Zoocha is a web development firm founded in 2009 and headquartered in Hertford, in the U.K. The firm has other locations in Valencia, Spain; Balneário Camboriú, Brazil; and New York, N.Y. Zoocha has about 30 employees. 

    Clients

    • Westminster City Council
    • Financial Conduct Authority
    • Ofsted
    • Topdeck Travel (part of Flight Centre Travel Group)

    Industries

    Notable Project

    Zoocha built an MVP from an early-stage platform and tested features in an automated environment. Since development, the team has done backend support, API services, and feature enhancements.

    "Listen to their ideas because they know how to deliver value."

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  • 250
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom
    Launched in 2020, Bitmaster is a small mobile app development firm. Their team focuses on mobile app development, web development, Artificial Intelligence, and blockchain. The agency is headquartered in London, United Kingdom.
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  • 251
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom
    Evil Twins Studio is a SEO company. They are in London, United Kingdom and have a small team. Their services include search engine optimization, web design, graphic design, web development, and more.
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  • 252
    • Undisclosed
    • 2 - 9 employees
    • Covent Garden, London, United Kingdom
    Prolific Digital is a small SEO services firm based in Covent Garden, London, United Kingdom. Founded in 2020, the team focuses on search engine optimization, social media marketing, web design, web development, and more.

    Industries

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  • 253
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 2 - 9 employees
    • London, United Kingdom
    Web development firm DigiAlps LTD was established in 2021. Headquartered in London, United Kingdom, their small team provides web development, web design, ux/ui design, and custom software development.

    Industries

    Notable Project

    DigiAlps LTD was hired to design and build websites for a marketing company. They built a website following the client's specific design and functionality requests.

    "They were Highly effective."

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  • 254
    • $5,000+
    • 50 - 249 employees
    • London, United Kingdom

    SGC Ventures is a London, United Kingdom-based software development company. The company specializes in custom software development, web development, mobile app development, e-commerce development, and more and is midsize.The company was launched in 2011.

    Industries

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  • 255
    • $5,000+
    • 10 - 49 employees
    • London, United Kingdom
    Olive Software is an application development company. The small Hanoi, Vietnam-based company was launched in 2021. Their services include mobile app development, web development, IT strategy consulting, blockchain, and more.
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  • 256
    • $1,000+
    • 50 - 249 employees
    • Slough, United Kingdom
    WebSouls is a web design company. Founded in 2002, the team offers web design, other digital marketing, web development, mobile & app marketing, and more. Their midsize company is Slough, United Kingdom-based.

    Industries

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  • 257
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 50 - 249 employees
    • London, United Kingdom
    Softigh is a small user experience design agency. The Dubai, United Arab Emirates-based agency was launched in 2021. Their team offers ux/ui design, web design, web development, search engine optimization, and more.

    Notable Project

    A sports supplements provider has hired Softigh for their social media marketing services. This involves creating and managing their posts and ads. The team also redesigned the client's logo.

    "Their rapid responses and services are very impressive."

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  • 258

    Worked with HybridTechLabs - Custom Apps Development - Software Developers Poland?

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    • $5,000+
    • 2 - 9 employees
    • London, United Kingdom

    Founded in 2017, HybridTechLabs - Custom Apps Development - Software Developers Poland is a custom software development firm. The small London, United Kingdom-based team specializes in custom software development, mobile app development, web development, enterprise app modernization, and more.

    Industries

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  • 259
    • $5,000+
    • 10 - 49 employees
    • Park Royal,
    Neosis LTd is an e-commerce development company. The small team is headquartered in Park Royal, United Kingdom. Their services include e-commerce development, mobile app development, web development, email marketing, and more.
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  • 260
    • $5,000+
    • 50 - 249 employees
    • London, United Kingdom

    Web Solutions, founded in 2009, is a web design agency headquartered in Karachi, Pakistan. Their team focuses on mobile & app marketing, web design, and web development.

    Clients

    • Love2Laundry
    • DTS London
    • THAI SQUARE

    Industries

    Notable Project

    Web Solutions designed a mobile-friendly website for a minicab services provider. They also created business cards and provided SEO and PPC management services.

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  • 261
    • $50,000+
    • 2 - 9 employees
    • London, United Kingdom

    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.

    Clients

    • RE-Defined
    • Corning
    • Metomic
    • Ontologue

    Industries

    Notable Project

    A cybersecurity company hired Jupiter and the Giraffe to design the UI of their web-based risk assessment application. The team also coded the survey’s formulas and created a PDF report-generating function.

    "Jupiter and the Giraffe accomplished the task with minimal direction."

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  • 262
    • $1,000+
    • 2 - 9 employees
    • London,
    Dantes Ink, a digital strategy company, was launched in 2020. The small London, United Kingdom-based team specializes in digital strategy, pay per click, social media marketing, search engine optimization, and more.

    Industries

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  • 263
    • $25,000+
    • 10 - 49 employees
    • Surbiton, United Kingdom
    Rbbr duck is a mobile application development firm in Surbiton, United Kingdom. The small company was launched in 2019. Their services include mobile app development, web development, and ux/ui design.

    Industries

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  • 264
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom
    MackoLabs | WeCreateYourSite is a website development firm. The London, United Kingdom-based company was launched in 2021. The small team provides web development, web design, search engine optimization, e-commerce development, and more.
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  • 265
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Creamos is an advertising company founded in 2018. The firm specializes in advertising, ux/ui design, AR/VR development, branding, and more and has a small team.

    Industries

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  • 266
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom
    TAKWEN LTD is a small mobile app development firm based in London, United Kingdom and Dubai, United Arab Emirates. Founded in 2021, the team focuses on mobile app development, web development, branding, market research, and more.

    Clients

    • UAE GOV
    • STC
    • TANWEEL
    • Cureify

    Industries

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  • 267
    • $5,000+
    • 10 - 49 employees
    • London, United Kingdom
    Keypoint Solutions Ltd is a website development company launched in 2021. Located in London, United Kingdom, their small team specializes in web development, IT strategy consulting, cloud consulting & SI, IT managed services, and more.
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  • 268
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom

    In London, United Kingdom and Bombarral, Portugal, Compelling Ideas is a print design agency. The small agency was founded in 2010. Their services include print design, video production, web development, branding, and more.

    Industries

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  • 269
    • $5,000+
    • 50 - 249 employees
    • London, United Kingdom
    Launched in 2015, Estech Digital is a midsize custom software development firm. Their services include custom software development, web development, mobile app development, e-commerce development, and more. The firm is based in Los Angeles, California and London, United Kingdom.

    Industries

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  • 270
    • Undisclosed
    • 2 - 9 employees
    • London, United Kingdom
    Techknock is a small branding agency. The London, United Kingdom-based company was founded in 2022. Their team offers branding, ux/ui design, graphic design, custom software development, and more.

    Industries

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