Top 100 JavaScript Development Companies in the United Kingdom

TensionX is a software company founded in 2020 with fewer than 50 experts. They provide custom software and web development solutions from their office in London. They mainly work with small and mid-market firms in the fields of advertising and business services.

Adeo Group is a web design and development agency based in Glasgow, U.K., with additional offices in London, and Dubai. Founded in 2004, they have around 15 employees and they offer web design, web development, and e-commerce development to, almost exclusively, small businesses. 

Digitals OYT Ltd., a custom software development firm, was established in 2022. They are based in London, United Kingdom and have a small team. Digitals OYT Ltd. Specializes in custom software development, IT staff augmentation, web development, web design, and more.

Two Hours Sleep is a web design agency launched in 2018. Their small team is headquartered in Tunbridge Wells, United Kingdom. Their services include web design, web development, ux/ui design, conversion optimization, and more.

Virtue Xolutions, a website development company, is based in Dubai, United Arab Emirates; Ashburn, Virginia; London, United Kingdom and Mississauga, Canada. The midsize agency was launched in 2015. Their team specializes in web development, web design, branding, mobile app development, and more.

Established in 2005, SCube Digital Media is a SEO company. They are based in Cambourne, United Kingdom and have a small team. Their services include search engine optimization, web design, advertising, ux/ui design, and more.

Located in Birmingham , United Kingdom, Verse is an user experience company. The small team offers ux/ui design, email marketing, web design, and web development and was launched in 2007.

Aleios is a custom software development firm. They are located in London, United Kingdom and have a small team. Their services include custom software development, enterprise app modernization, web development, and other IT consulting and SI. The firm was founded in 2021.

Mass 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.

Yellow Moose is a web design, marketing strategy, and SEO agency based in Buckingham, U.K. The company was founded in 2018 and works exclusively with small business clients. 

Upment is an e-commerce Magento agency based in London with an office in Sombor, Serbia. The agency, founded in 2014, has a team of less than ten that provides e-commerce development to small and larger-sized e-commerce companies.

 Cefar is a digital agency founded in 2006 and headquartered in Leeds, UK with an office in London. Their team of 20 provides PPC, web design, graphic design, and web development services. 

Founded in 2015, WebMeridian is development agency headquartered in Kharkiv, Ukraine. Their team of 32 provide e-commerce development, web development, and mobile application development services to their clients. 

Neadoo Digital is an online marketing agency based in London, England, that was established in 2012. Their team of 14 employees offers SEO, web development, PPC, conversion optimization, and content marketing services.

Future Platforms is a London based digital agency. Founded in 2000, Future Platforms employs a team of 39 specialists that provide e-commerce,​ ​​​​​​mobile app, and wearable app development.

Web Epoch is a development house that was founded in 2014 and provides custom software, mobile app, and e-commerce development. The London-based team of under 10 employees mostly services mid- and enterprise-level clients, though they also support small businesses.

Located in London, United Kingdom and Lahore, Pakistan, Devbox is a web development company. The midsize agency was founded in 2011. Their team focuses on web development, custom software development, IT staff augmentation, mobile app development, and more.

Founded in 2008, PLDEVS.COM is a development firm. Their team of around 25 employees is based in Wroclaw, Poland, with additional offices in London. They focus on custom software, web, and mobile app development.

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.

Mobile application development firm Nordstone was launched in 2018. The firm specializes in mobile app development, ux/ui design, and application management & support and has a small team. The firm is located in London, United Kingdom.

Circle Square is a software development company located in London. Founded in 2016, they have roughly 5 teammates. Their services include IT staff augmentation and product design as well as web and app development.

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.

TK WebHosts is a web design agency in London, United Kingdom. The small company was launched in 2014. Their team offers web design, search engine optimization, IT managed services, web development, and more.

Web design agency and website development company Benedict Wallis - Web Developer was launched in 2016. The small team focuses on web design and web development. The company is located in Bristol , United Kingdom.

London Web Design Agency is a small web development company. Established in 2005, the team provides web development, web design, and branding. The company is located in Twickenham, United Kingdom.

WeCodePlus is a London-based development agency founded in 2018. Their team of approximately 3–4 employees mostly serves small businesses across a variety of industries. Their specialties are web design and development, but they also provide Android and iOS development. 

Established in 2016, Bent Oak Systems is a software development company. The agency specializes in custom software development, web development, mobile app development, and staffing and has a small team. The agency is in London, United Kingdom.

Azantic is a software agency founded in 2017 with no more than 10 professionals. They offer web development, e-commerce development, and web design solutions from their office in Krakow, Poland. They mainly work with small businesses.

Small custom software development firm inCode Systems, is headquartered in London, United Kingdom. The team specializes in custom software development, enterprise app modernization, ux/ui design, e-commerce development, and more.

Spectre Creative is a small e-commerce development firm and web development company. Located in Glasgow, United Kingdom, the firm was established in 2014. Their services include e-commerce development and web development.