Top 100 JavaScript Development Companies in London

Top Notch Dezigns is a web design and digital marketing agency from New York. It was founded in 2004 and now has a team of 26 that does web design and development, mobile apps, SEO, SEM, and more for clients across a variety of industries, from business services to consumer products. 

Founded in 2009, Trembit is a full-service software development company based in Kiev. The team of 35+ provides custom software development, e-commerce development, web development, and mobile app development for mainly small businesses. 

Yalla is an UX design company. They are in London, United Kingdom and Gaza City, Palestine, State of and have a small team that specializes in ux/ui design, custom software development, web design, web development, and more. The agency was launched in 2019.

Burst Digital is a web design company in London, United Kingdom. They offer web design, graphic design, web development, digital strategy, and more and were launched in 2018.

TkXel is a mobile app and web development company founded in 2007. With its headquarters in Reston, Va., and an office in Lahore, Pakistan, they have a team of 318 employees. Their services include mobile app development, web development, and custom software development. They primarily serve small and midmarket clients. 

Uniko Studio, a branding agency, was launched in 2022. The company provides branding, web design, ux/ui design, logo, and more and has a small team. The company is based in London, United Kingdom and دبي, United Arab Emirates.

Haefele Software is an outsourced Microsoft software development company based in Cape Town, South Africa, with offices in Melbourne, Australia; Tampa, Florida; and London. The company, founded in 2006, has more than 50 employees and provides custom software development, IT strategy consulting, and IoT development services to enterprise and smaller-sized companies in various industries.

Tilde Loop is a small software development firm launched in 2019. Their team specializes in custom software development, web development, and other application development. The firm is headquartered in London, United Kingdom.

CM System Designs is a software company based in Dorking, England, and founded in 2017. Their team of more than two offers custom software and web development solutions for small and mid-market firms alike.

Signifly is a digital design and development agency headquartered in Montreal, Canada, with an office in Copenhagen. Since 2010, their team of about 30 has expertise in digital strategy, UX/UI design, and e-commerce development. 

Default-Value Software Developers is an e-commerce development company. They specialize in e-commerce development, custom software development, and web development and were founded in 2010. Their small team is Chercassy, Ukraine-based.

AtraX is a small website development company established in 2006. Their services include web development, custom software development, graphic design, IT strategy consulting, and more. The company is in Florence, Italy and Tirana, Albania.

Web design company Brander Studio is located in Kharkiv, Ukraine. The midsize agency was founded in 2009. Their team provides web design, mobile app development, web development, and digital strategy.

Influential Software is a software development firm in London, United Kingdom; Maidstone, United Kingdom and Glasgow, United Kingdom. The firm focuses on custom software development, web development, BI & big data consulting & SI, IT managed services, and more and has a midsize team.The firm was launched in 1993.

In London, United Kingdom and Pančevo, Serbia, IceFyre Solutions is a web development firm. The small agency was launched in 2017. Their team offers web development, mobile app development, and Artificial Intelligence.

Catch is a digital experience agency founded in 2007. Based in London, United Kingdom, they also have an office in Madrid, Spain, and a team of over 30 employees. They specialize in web development, UX/UI design, and content marketing. 

ICustomWeb is a website development firm founded in 2018. The company offers web development, web design, and ux/ui design and has a small team. The company is located in Bournemouth, United Kingdom.

Launched in 2020, hatch is a software development company. The company provides custom software development, mobile app development, ux/ui design, IT strategy consulting, and more and has a small team. The company is located in Berlin, Germany; Seefeld, Germany; Zürich, Switzerland and Triesen, Liechtenstein.

Ziffity Solutions LLC, an e-commerce development company, was launched in 2014. Their midsize team is based in Texas, Texas and offers e-commerce development, search engine optimization, ux/ui design, pay per click, and more.

Based in London, United Kingdom, Goodspeed is a website development firm. The small firm was founded in 2022. Their services include web development, custom software development, and mobile app development.

Pixated is a marketing agency in London, England. Founded in 2018, they have about 2 employees that serve small-business and midmarket clients in the gaming, e-commerce, and advertising industries. Services include social media marketing, mobile app marketing, and PPC.

SENLA is a fast-growing software development company in 5 EU locations, founded in 2012. Our team of 600+ certified technical specialists and managers has large expertise in a full-cycle development from BA to maintenance as well as separate services like QA or UX Audit. We have successfully completed over 350 projects in FinTech, Healthcare, Manufacturing and other industries.

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.

Hex Digital, an advertising company, is headquartered in London, United Kingdom. The small company was launched in 2008. Their services include advertising, custom software development, ux/ui design, branding, and 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.

We Are Kitty is a small London, United Kingdom-based user experience design company. Founded in 2017, the team provides ux/ui design, e-commerce development, web design, web development, and more.

Internet Dreams Studio is a small London, United Kingdom-based e-commerce development company. Their services include e-commerce development, mobile app development, search engine optimization, web design, and more.

Steadfast Collective is a custom software development company established in 2014. The small team focuses on custom software development, web development, and e-commerce development. The agency is located in London, United Kingdom.

Bladeware is an app development company that is headquartered in Zaporizhzhya, Ukraine. Founded in 2018, the team of work to provide mobile app development, custom software development, and application testing services to their small business clients. They primarily work with businesses within the education, information technology, and business services industries. 

AppDrawn is a software solutions company founded in 1999. Their headquarters are in London and they have a second office in Barcelona. Across these 2 locations, they have a team of a dozen staff that do custom software development, web development, and mobile app development for small and medium-size businesses.