Top 100 JavaScript Development Companies in the United Kingdom
The Best of May 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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61$10,000+10 - 49 employeesLondon, EnglandRattlesnake Group, a branding company, was founded in 2020. The company specializes in Branding, UX/UI Design, Custom Software Development, Web Design, and more and has a small team.Read More
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62$25,000+50 - 249 employeesLondon, EnglandCimpleO Group is an IoT development company. Their midsize team is located in Hong Kong SAR, Hong Kong; Bangkok, Thailand and London, England. The firm focuses on IoT development, Custom Software Development, Web Development, Mobile App Development, and more.Read More
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American Chemical SocietyIndustries
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63$100,000+250 - 999 employeesEdinburgh, ScotlandLaunched in 2010, CreateFuture is a mobile application development company and web development company. The midsize Edinburgh, Scotland-based team focuses on Mobile App Development and Web Development.Read More
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PayPalIndustries
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64$100,000+50 - 249 employeesNewcastle upon Tyne, EnglandHedgehog lab is a midsize mobile application development firm. They specialize in Mobile App Development, Artificial Intelligence, UX/UI Design, Custom Software Development, and more and were launched in 2007. The company is headquartered in Newcastle upon Tyne, England.Read More
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Aviva AJ Bell Tesco Bank Under ArmourIndustries
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65Undisclosed50 - 249 employeesLondon, EnglandRead More
Fourmeta is an e-commerce development firm founded in 2017. In London, United Kingdom, their midsize team offers e-commerce development, ux/ui design, and web development.
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66$10,000+10 - 49 employeesLondon, EnglandHeadquartered in Sofia, Bulgaria; London, England; München, Germany and New York, New York, ExpandX Marketing & Web is a web development company. The small firm was established in 2015. Their services include Web Development, Social Media Marketing, Pay Per Click, E-Commerce Development, and more.Read More
Clients
High Touch Investment Corp Inc (USA) Assent Inc (Canada and USA) South Themes Colleges Group (UK) Airhosted (Switzerland)Industries
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67$25,000+10 - 49 employeeslondon, EnglandRead More
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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DoctorLinkIndustries
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68$10,000+10 - 49 employeesLondon, EnglandHue&machine is an user experience agency. The small London, England-based agency was founded in 2020. Their services include UX/UI Design, Custom Software Development, Web Design, Web Development, and more.Read More
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Stanford University Microsoft Clair HenkelIndustries
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69$10,000+50 - 249 employeesLondon, EnglandSignifly is a branding company established in 2010. They are located in Montréal, Canada; København, Denmark; Oslo, Norway and Stockholm, Sweden and have a midsize team. The company specializes in Branding, E-Commerce Development, Marketing Strategy, Digital Strategy, and more.Read More
Clients
GoogleIndustries
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70$10,000+10 - 49 employeesGuildford, EnglandRead More
Lightflows is a website development firm headquartered in Guildford, England and London, England. The small agency was established in 2009. Their services include Web Development, Mobile App Development, UX/UI Design, Custom Software Development, and more.
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HomeViewsIndustries
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71$25,000+2 - 9 employeesLondon, EnglandRead More
Powered By Coffee is a London, United Kingdom-based website development firm. Launched in 2011, the small team focuses on web development, e-commerce development, web design, digital strategy, and more.
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Key MediaIndustries
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72$50,000+10 - 49 employeesLondon, EnglandRead More
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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TogetherallIndustries
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73$5,000+250 - 999 employeesLondon, EnglandBased in Dhaka, Bangladesh; London, England; Dubai, United Arab Emirates and Dhaka, Bangladesh, Riseup Labs is an UX company. They offer UX/UI Design, IT managed services, IT staff augmentation, Custom Software Development, and more and were established in 2010.Read More
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74$10,000+50 - 249 employeesLondon, EnglandNimblechapps Pvt. Ltd. Is a mobile app development company headquartered in Ahmedabad, India; Austin, Texas and London, England. They offer Mobile App Development and Web Development and were established in 2014.Read More
Clients
Strom MotorsIndustries
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75$25,000+10 - 49 employeesLondon, EnglandBit Zesty is a small Application Management & Support company. Based in London, England, the firm was founded in 2009. Their team focuses on Application Management & Support, Custom Software Development, E-Commerce Development, Web Development, and more.Read More
Clients
Oxford Medical SimulationIndustries
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76$25,000+10 - 49 employeesManchester, EnglandCorporation Pop Ltd is a small application development firm. The Manchester, England-based agency was founded in 1991. Their services include Mobile App Development, AR/VR development, Web Development, and UX/UI Design.Read More
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77$1,000+10 - 49 employeesLondon, EnglandTakeaway Reality is an AR/VR development company. Their small team is in London, England and Zagreb, Croatia and provides AR/VR development, Custom Software Development, Business Consulting, Web Development, and more. The firm was founded in 2020.Read More
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Microsoft FordIndustries
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78$5,000+50 - 249 employeesLondon, EnglandRead More
Protocloud Technologies PVT. LTD. is an information technology and services provider that was founded in 2011. Their headquarters are in Jaipur, India, where they employ between 10 and 15 staff. They work with a range of midmarket and small businesses, offering a full suite of digital solutions, including e-commerce development, custom software development, websites, mobile apps and cloud integration.
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WayfairIndustries
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79$50,000+10 - 49 employeesLondon, EnglandBoldheart, a mobile application development firm, was founded in 2020. The agency specializes in Mobile App Development, Custom Software Development, UX/UI Design, IT strategy consulting, and more and has a small team. The agency is in Berlin, Germany; München, Germany; Zürich, Switzerland and Wien, Austria.Read More
Clients
ValoraIndustries
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80$10,000+50 - 249 employeesLondon, EnglandRead More
Haefele Software is a midsize Cape Town, South Africa-based software development company. They focus on Custom Software Development, Enterprise App Modernization, Web Development, API Development, and more and were founded in 2006.
Clients
Tesco Burger King AS Watson Group PikmykidIndustries
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81$5,000+10 - 49 employeesBirmingham, EnglandOpace Digital Agency is a small social media marketing agency founded in 2008. Their services include Social Media Marketing, Search Engine Optimization, Pay Per Click, Web Design, and more. The company is located in Birmingham, England.Read More
Clients
Acorns Children's Hospice Shedstore Buy Fencing Direct Ferne animal SanctuaryIndustries
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82$10,000+10 - 49 employeesLondon, EnglandRead More
Top Notch Dezigns® is a small web design agency. Founded in 2004, the firm is headquartered in New York, New York; Melville, New York; Los Angeles, California and London, England. Their team specializes in Web Design, Search Engine Optimization, Pay Per Click, Web Development, and more.
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Home Depot Meadowbrook Financial Mortgage Bankers Long Island University Student Nursing Association (SNA) CassoneIndustries
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83$25,000+50 - 249 employeesLondon, EnglandPlavno is a midsize app development company. The Alexandria, Virginia-based agency was founded in 2007. Their services include Mobile App Development, Artificial Intelligence, Custom Software Development, Web Development, and more.Read More
Clients
Mercedes, Xerox, Kia, eBay, PayPal, Amazon , IBM, Bank, MediacubeIndustries
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84$25,000+50 - 249 employeesCobham, EnglandMobcoder, an IT staff augmentation company, is located in Seattle, Washington; Cobham, England; Ghaziabad, India and Burnaby, Canada. The midsize company was launched in 2014. Their services include IT staff augmentation, Artificial Intelligence, UX/UI Design, BI & big data consulting & SI, and more.Read More
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General millsIndustries
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85$10,000+10 - 49 employeesEdinburgh, ScotlandGearedApp is a website development company. Launched in 2013, the team provides Web Development, Custom Software Development, Mobile App Development, and Artificial Intelligence. Their small firm is headquartered in Edinburgh, Scotland.Read More
Clients
NHSIndustries
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86$50,000+50 - 249 employeesLurgan, Northern IrelandGCD, a software development company, was launched in 1999. The midsize team offers Custom Software Development, Mobile App Development, Web Development, UX/UI Design, and more. The company is headquartered in Lurgan, Northern Ireland and Dublin 2, Ireland.Read More
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87$10,000+1,000 - 9,999 employeesBirmingham, EnglandRead More
Chetu, Inc. is a custom software development company headquartered in Plantation, Fla. with several additional locations: Las Vegas, Clearwater, Fla., Brentwood, Tenn., Plano, Texas, Schaumburg, Ill., Madison, Wis., Marietta Ga., Rijswijk, Netherlands, and Noida, India. They have a team of more than 1,000 employees who specialize in custom software development, web development, and mobile application development services. Founded in 2000, they continue to support clients of all sizes in the consumer products and services, financial services, and gaming industries.
Clients
Foot LockerIndustries
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88$10,000+250 - 999 employeesHampshire, EnglandCommunication Crafts is a website development firm. They are located in Lewes, Delaware; Hampshire, England and Ahmedabad, India and have a midsize team. The firm offers Web Development, Mobile App Development, Video Production, IT managed services, and more.Read More
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NutriMixologyIndustries
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89$25,000+250 - 999 employeesLondon , EnglandRead More
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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First Abu Dhabi Bank Basis Bank FICO TeraDataIndustries
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90$25,000+50 - 249 employeesCardiff, WalesRead More
Box UK is an enterprise software development company based in Cardiff, UK, with an office in London. The company, founded in 1998, has more than 50 employees who provide, among others, custom software development, web development, and enterprise app modernization services to various businesses.
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OKdo.comIndustries
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