Top 100 JavaScript Development Companies in the United Kingdom

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Top 100 JavaScript Development Companies in the United Kingdom

The Best of April 2024

Looking 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. 

Jump to Most Reviewed Companies

List of the Best United Kingdom JavaScript Developers

  • 1
    (55 Reviews) 4.8
    • Timeliness

      4.7
    • Service Excellence

      4.8
    • Value

      4.7
    • Would Recommend

      4.9
    • $50,000+
    • 250 - 999 employees
    • Farnborough, United Kingdom

    One Beyond is a bespoke software development and digital transformation company headquartered in London with additional engineering centers in Madrid (Spain), Budapest & Szeged (Hungary) and Bucharest (Romania). Across international locations, they have a team of more than 350 individuals providing custom software, web and mobile application development and large- scale digital transformation to a diverse clientele.They support large established businesses, nonprofits, government organizations, and VC-funded startups

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    Clients

    • Smith & Nephew

    Industries

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  • 2
    (11 Reviews) 4.9
    • Timeliness

      4.7
    • Service Excellence

      4.9
    • Value

      4.5
    • Would Recommend

      4.9
    • $50,000+
    • 50 - 249 employees
    • Matlock, United Kingdom

    Human Made is an enterprise WordPress agency. Founded in 2010, they employ 65 people, and serve the enterprise market with clients in the publishing, financial, education and technology sectors. Services include bespoke web development, enterprise WordPress platform projects, artificial intelligence, and web hosting.

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    Clients

    • ABC

    Industries

  • 3
    (28 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom

    Tech Alchemy is a software development studio based in London. Founded in 2016, they have around 150 employees who provide startups and small to medium-sized businesses with custom software development, blockchain development, and web & mobile app design and development. Services include prototyping, discovery, MVP development, and Web3 digital transformation

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    Clients

    • Ocean Bottle

    Industries

  • 4
    (5 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.7
    • Would Recommend

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

    Torchbox is a web design agency launched in 2000. The firm focuses on web design, web development, ux/ui design, pay per click, and more and has a midsize team.

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    Industries

  • 5
    (5 Reviews) 5.0
    • Timeliness

      4.8
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $10,000+
    • 10 - 49 employees
    • Whalley, United Kingdom

    Unicorn Road is a software development company. Launched in 2020, the team offers custom software development, ux/ui design, AR/VR development, mobile app development, and more. Their small agency is Chicago, Illinois-based.

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    Industries

  • 6
    (52 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.8
    • Would Recommend

      5.0
    • $5,000+
    • 10 - 49 employees
    • Lymm , United Kingdom

    Visions Design Lymm is a design studio based in Lymm, UK. Their team of over 10 was founded in 2010 and serves small and midmarket businesses. Services include web and graphic design as well as branding.

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    Clients

    • Alpha Grd

    Industries

  • 7
    (30 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Founded in 2007, Softblues is a software development company headquartered in Lviv, Ukraine. Their team of approximately 22 employees serves small to mid-sized businesses, particularly in the e-commerce and education sectors. They specialize in custom software as well as web and e-commerce development.

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    Clients

    • Pinterest

    Industries

  • 8
    (10 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.8
    • Would Recommend

      5.0
    • $10,000+
    • 10 - 49 employees
    • Edinburgh, United Kingdom

    GearedApp is a software development firm based in Edinburgh, Scotland. They were founded in 2013 and have a team of 11 employees who specialize in mobile development, web development, and UX/UI design. They work mostly with small business clients in the healthcare, business services, and education industries.

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    Clients

    • NHS

    Industries

  • 9
    (15 Reviews) 4.8
    • Timeliness

      4.9
    • Service Excellence

      4.8
    • Value

      4.7
    • Would Recommend

      4.9
    • $25,000+
    • 10 - 49 employees
    • london, United Kingdom

    Thought&Function is a digital agency founded in London in 2017 with no more than 10 members. They are experts in web development, mobile app development, and UX/UI design solutions for clients in the industries of financial services, education, and health care.

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    Clients

    • DoctorLink

    Industries

  • 10
    (11 Reviews) 5.0
    • Timeliness

      4.8
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $100,000+
    • 50 - 249 employees
    • London, United Kingdom

    Yojji is a software development firm based in London with an office in Kharkiv, Ukraine. The firm, founded in 2017, has more than 35 employees and provides custom software development, web development, mobile app development, web design, product design, and application testing services. Yojji serves small and larger-sized companies in various industries that include financial services, business services, and health care & medical. 

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    Clients

    • Valapay LTD

    Industries

  • 11
    (21 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.7
    • Would Recommend

      5.0
    • $25,000+
    • 10 - 49 employees
    • Farnham, United Kingdom

    Valiant Design is a strategic creative agency located in Farnham, England. They have about 13 teammates. Since 2010, they have provided branding, web design, and packaging design services to primarily midmarket agencies in the health care and medical, business services, and manufacturing industries.

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    Clients

    • Contec Inc

    Industries

  • 12
    (8 Reviews) 5.0
    • Timeliness

      4.8
    • Service Excellence

      5.0
    • Value

      4.8
    • Would Recommend

      5.0
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Agile Digital Agency is a marketing technology agency based in London. The agency has a team of less than ten that provides email marketing, SEO, and other digital marketing services to small and midmarket companies and institutions.

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    Clients

    • Singleton Law Firm (USA)

    Industries

  • 13
    (4 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.8
    • Would Recommend

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

    ClerksWell is a custom software development firm. They are headquartered in London, United Kingdom and have a midsize team that focuses on custom software development, web development, IT strategy consulting, web design, and more. The firm was founded in 1996.

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    Industries

  • 14
    (13 Reviews) 5.0
    • Timeliness

      4.8
    • Service Excellence

      5.0
    • Value

      4.8
    • Would Recommend

      5.0
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Hiyield is a small website development firm located in St. Austell, United Kingdom. Launched in 2018, the team focuses on web development, custom software development, ux/ui design, application management & support, and more.

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    Industries

  • 15
    (17 Reviews) 4.9
    • Timeliness

      4.9
    • Service Excellence

      4.9
    • Value

      4.4
    • Would Recommend

      4.9
    • $100,000+
    • 10 - 49 employees
    • Sarratt, United Kingdom

    Clock Limited is a digital design and build company. Founded in 1997, the company is headquartered in Kings Langley, United Kingdom. They have a team of around 35 employees who focus on custom software, web, and mobile app development.

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    Clients

    • International Tennis Federation

    Industries

  • 16
    (5 Reviews) 4.9
    • Timeliness

      4.9
    • Service Excellence

      4.9
    • Value

      5.0
    • Would Recommend

      5.0
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom

    Filter Digital, a website development company, was launched in 2016. Their small team is headquartered in London, United Kingdom. The agency focuses on web development, mobile app development, custom software development, and digital strategy.

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    Clients

    • Ennismore

    Industries

  • 17
    (19 Reviews) 4.7
    • Timeliness

      4.5
    • Service Excellence

      4.7
    • Value

      4.7
    • Would Recommend

      4.8
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom

    Located in Ahmedabad, India with additional offices in the US and UK, Innovify has been delivering high quality solutions since 2011. Although the team of nearly 130 specializes in mobile app development, they also engage in growth hacking, consulting, and UX design.

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    Clients

    • ARM INC

    Industries

  • 18
    (6 Reviews) 4.6
    • Timeliness

      4.6
    • Service Excellence

      4.6
    • Value

      4.1
    • Would Recommend

      4.7
    • $25,000+
    • 10 - 49 employees
    • Basingstoke, United Kingdom
    Headquartered 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

    Industries

  • 19
    (34 Reviews) 4.9
    • Timeliness

      4.7
    • Service Excellence

      4.9
    • Value

      4.8
    • Would Recommend

      4.9
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom

    Together is a full-service agency that builds brands, websites and digital products for good tech companies around the world.

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    Clients

    • Unit

    Industries

  • 20
    (15 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Old.St Labs is a software development business based in London. The business, founded in 2020, has a team of more than ten that provides custom software development, mobile app development, UX/UI design, web design & development, and AI services. Old.St Labs serves small and mid-market companies in the advertising & marketing, education, financial services, health care & medical, and legal industries.

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    Clients

    • Kopona

    Industries

  • 21
    (5 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $100,000+
    • 50 - 249 employees
    • Edinburgh, United Kingdom

    xDesign is a design and development company in Edinburgh, U.K. Founded in 2010, their team of 50+ provides web development and mobile app development services to small business, midmarket, and enterprise clients across various industries. 

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    Clients

    • PayPal

    Industries

  • 22
    (7 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.5
    • Would Recommend

      5.0
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom

    Webpop Design is a web design agency based In London. Founded in 2008, their small team is known for their UX/UI design, branding and SEO efforts as well. They work primarily with small businesses in multiple industries.

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    Clients

    • Datameer

    Industries

  • 23
    (11 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.8
    • Would Recommend

      4.9
    • $25,000+
    • 250 - 999 employees
    • London , United Kingdom

    RNDpoint (former PST Labs) is a London-based development firm. The team of over 50 provides mobile app, custom software and web development services. Founded in 2014, they primarily serve enterprise businesses in the financial services industry.

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    Clients

    • First Abu Dhabi Bank

    Industries

  • 24
    (28 Reviews) 5.0
    • Timeliness

      4.8
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      4.9
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom

    56 Degrees is a web development agency with a team of under 10 employees. Based in London and founded in 2010, they provide web development, web design, and e-commerce development services. 

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    Clients

    • GiffGaff Studio
  • 25
    (12 Reviews) 4.7
    • Timeliness

      4.5
    • Service Excellence

      4.7
    • Value

      4.4
    • Would Recommend

      4.7
    • $50,000+
    • 10 - 49 employees
    • London, United Kingdom

    NEVERBLAND is a web development firm. They provide web development, web design, ux/ui design, custom software development, and more and were launched in 2010. Their small team is London, United Kingdom-based.

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    Clients

    • Togetherall

    Industries

  • 26
    (7 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.7
    • Would Recommend

      5.0
    • $5,000+
    • 10 - 49 employees
    • London, United Kingdom

    RCCO - Creative Sales & Marketing, an user experience design agency, is located in London, United Kingdom. Launched in 2018, the small team specializes in ux/ui design, branding, digital strategy, and web design.

    Read More

    Industries

  • 27
    (30 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $25,000+
    • 50 - 249 employees
    • Croydon, United Kingdom

    Founded in 2005 and headquartered in Croydon, UK, GoodCore Software specializes in bespoke software development. WIth a team of about 50 employees, the company offers web and mobile app development to startups and established businesses alike. Engagement options include fixed- cost and dedicated development teams.

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    Clients

    • Printed Music Licensing

    Industries

  • 28
    (4 Reviews) 4.9
    • Timeliness

      4.6
    • Service Excellence

      4.9
    • Value

      4.8
    • Would Recommend

      5.0
    • $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. 

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    Clients

    • Westminster City Council

    Industries

  • 29
    (25 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $10,000+
    • 50 - 249 employees
    • London, United Kingdom

    Founded in 2010, PioGroup Software is a development company based in Kharkiv, Ukraine. They have a small team of fewer than 50 people, and they primarily work with small businesses. 

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    Clients

    • Moving Pipe

    Industries

  • 30
    (23 Reviews) 4.8
    • Timeliness

      4.8
    • Service Excellence

      4.8
    • Value

      4.8
    • Would Recommend

      4.8
    • $10,000+
    • 50 - 249 employees
    • London, United Kingdom

    Powercode is a web development agency based in Kyiv, Ukraine founded in 2015. They are operated by a team of 66 who are experts in web, mobile app, and custom software development for clients ranging from startups to enterprises. They have experience working in industries such as financial services, business services, and IT. They are also familiar with working with platforms like Amazon, Linux servers, and Azure, among others.

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    Industries

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