Top 100 JavaScript Development Companies in London

Geeks is a software development company in London. Founded in 2007, Geeks' team of 85 specializes in custom software development, web development, and mobile app development, primarily for midmarket clients in media and govenment.

StarNavi is an IT agency founded in 2017 with a team of 28 professionals. Based in Tallinn, Estonia, the company provides small and midmarket businesses with IT-managed services, IT staff augmentation, and web development assistance, working in the advertising & marketing, real estate, and business services industries, among others.

Voodoochilli is a web design company located in Hereford, United Kingdom; London, United Kingdom and Boliqueime, Portugal. They focus on web design, ux/ui design, web development, digital strategy, and more and were founded in 2001.

Founded in 2018, Neural Soft Solutions is headquartered in London with another location in Lahore, Pakistan. Their team of 12 employees provides mobile app development, web development, and UX/UI design for enterprise, midmarket, and small businesses. They focus on business services, financial services, health care, and medical industries.

NCube is an IT staff augmentation company. Their midsize team is based in Kiev, Ukraine and London, United Kingdom and provides IT staff augmentation, custom software development, mobile app development, and web development. The agency was launched in 2008.

PENTA YAZILIM WEB TASARIM HİZMETLERİ, a web design company, was founded in 2003. The small team offers web design, ux/ui design, and web development. The agency is located in istanbul, Turkey.

Web Bureau is a web agency headquartered in Belfast, United Kingdom, with an office in Dublin, Ireland. Since 2005, the company has specialized in web development, pay-per-click, and web design solutions for small and midmarket businesses. They also offer SEO services, focusing on mobile optimization, on-site optimization, and local search, among other methods.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Mallow Technologies Private Limited is a digital agency based in Karur, India. Founded in 2010, it primarily serves small business clients in the business services, transportation, and IT fields. It focuses mainly on mobile app development, web development, and custom software development.

GBMF Tech, a software development firm, was established in 2019. Their small team is headquartered in London, United Kingdom; Citrus Heights, California and Chișinău, Moldova. The firm provides custom software development, web development, mobile app development, and e-commerce development.

Ucreate is a midsize mobile application development company. The London, United Kingdom-based agency was founded in 2015. Their services include mobile app development, web development, custom software development, ux/ui design, 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.

E-commerce development firm Hats ON Digital Agency is in Nicosia, Cyprus. Launched in 2018, the small team provides e-commerce development, social media marketing, web design, graphic design, and more.

Based in London, United Kingdom, Xtreme Web Tech is a branding agency. The agency offers branding, social media marketing, search engine optimization, web design, and more and is small.The agency was established in 2013.

Looming Tech, an app development company, is located in Sofia, Bulgaria and London, United Kingdom. The agency offers mobile app development, web development, custom software development, e-commerce development, and more and has a small team.The agency was founded in 2020.

Founded in 2007, Astwellsoft is a software development firm that offers custom software development, mobile app development, and web development services to their clients. THeir 250 employees are based out of Lviv.

Cloudavity Consulting LTD is a consultancy founded in 2018. Their team of fewer than 10 provides cloud consulting and web development solutions from their office in London. They work with clients in industries such as business services, financial services, and IT solutions.

UMM Digital is a hybrid branding agency with headquarters in Chennai, India with other offices in the UAE and Belgium. Since its start in 2007, the team of about 35 has provided web and mobile app development, UX/UI design, digital strategy, and branding services.

Zensar Technologies is a software services company founded in 1991, currently employing over 10,000. Their headquarters is in Pune, India, with multiple offices worldwide in India, Europe, and the U.S. They offer services in ERP consulting and SI, application management and support, and custom software development. They serve clients in a variety of industries, including financial services, IT, and advertising and marketing.

Revatics was founded in 2017. Their small team is headquartered in London, United Kingdom and Ahmedabad, India. Their services include.