Top 100 JavaScript Development Companies in London
The Best of December 2025Looking for a top JavaScript developer in London?
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 London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London JavaScript Developers
-
181$10,000+50 - 249 employeesLondon, EnglandUnibrix is a midsize web development firm. Based in Cherkasy, Ukraine and London, England, the company was founded in 2013. Their services include Web Development, Custom Software Development, Mobile App Development, Application Testing, and more.Read More
Industries
-
182$10,000+10 - 49 employeesLondon, EnglandFhoke is a branding agency launched in 2008. Located in Salisbury, United Kingdom, their small team focuses on branding, web development, print design, and web design.Read More
Clients
Travis PerkinsIndustries
-
183$10,000+2 - 9 employeesLondon, England11:11 Studio is a branding company launched in 2023. Their small team is based in London, England. The company specializes in Branding, Web Design, Content Marketing, UX/UI Design, and more.Read More
-
184$25,000+2 - 9 employeesLondon, EnglandRead More
Pixie Labs is a London, United Kingdom-based custom software development firm. The small company was launched in 2013. Their services include custom software development, Artificial Intelligence, e-commerce development, ux/ui design, and more.
Industries
-
185$10,000+50 - 249 employeesLondon, EnglandRead More
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.
Clients
Playmonk eSportsIndustries
-
186$25,000+10 - 49 employeesLondon, EnglandRead More
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.
Industries
-
187$1,000+10 - 49 employeesLondon, EnglandEstablished 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.Read More
Industries
-
188$1,000+50 - 249 employeesLondon, EnglandTask Virtual is a SEO company. The midsize Kolkata, India-based firm was founded in 2016. Their services include Search Engine Optimization, Back Office Outsourcing, Social Media Marketing, Content Marketing, and more.Read More
Industries
-
189$100,000+50 - 249 employeesLondon, EnglandInfinity Technologies is a midsize custom software development firm. The London, England-based company was founded in 2003. Their services include Custom Software Development, Web Development, Mobile App Development, and IT staff augmentation.Read More
Industries
-
190$1,000+10 - 49 employeesLondon, EnglandLoudlyDev Global Solutions is a website development company. Launched in 2018, the small company is in Lahore, Pakistan; London, England and Duluth, Georgia. Their team focuses on Web Development, IT staff augmentation, Artificial Intelligence, UX/UI Design, and more.Read More
Industries
-
191$5,000+2 - 9 employeesLondon, EnglandFounded in 2018, WeCodePlus is a web development firm. Their small team is in London, England. Their services include Web Development, Web Design, E-Commerce Development, and Mobile App Development.Read More
Clients
WeAreAubeIndustries
-
192$10,000+2 - 9 employeesLondon, EnglandRead More
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.
Industries
-
193$1,000+2 - 9 employeesLondon, EnglandAzantic is a Warszawa, Poland-based e-commerce development company. The small team focuses on E-Commerce Development, Web Development, Web Design, Custom Software Development, and more and was launched in 2017.Read More
Clients
Cambridge RealityIndustries
-
194Undisclosed50 - 249 employeesLondon, EnglandCodelax Creative is a web development company. Launched in 2016, the midsize agency is based in London, England and Thane, India. Their team provides Web Development, Web Design, Graphic Design, E-Commerce Development, and more.Read More
Industries
-
195$10,000+50 - 249 employeesLondon, EnglandRead More
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.
Industries
-
196$1,000+10 - 49 employeesLondon, EnglandRead More
UK LOGO DESIGNS LTD is a London, United Kingdom-based other digital marketing company. Established in 2010, the small team focuses on other digital marketing, web design, logo, and web development.
Industries
-
197$25,000+50 - 249 employeesLondon, EnglandZentix, an UX design company, is in Jelgava, Latvia and London, England. Founded in 2021, the midsize team specializes in UX/UI Design, E-Commerce Development, Low/No Code Development, Web Design, and more.Read More
Industries
-
198$5,000+10 - 49 employeesLondon, EnglandFounded in 2019, Revatics Limited is a website development firm. Their small team is headquartered in London, England and Ahmedabad, India. Their team focuses on Web Development, Mobile App Development, Custom Software Development, E-Commerce Development, and more.Read More
Industries
-
199$1,000+10 - 49 employeesLondon, EnglandWhite Label Solutions is a London, England-based software development company. Established in 2013, the small team specializes in Custom Software Development, Web Development, UX/UI Design, Mobile App Development, and more.Read More
Industries
-
200$10,000+10 - 49 employeesWestminster , EnglandMultivitamin Studio is a Digital Strategy company. The firm is based in Westminster , England and Truro, England. Their services include Digital Strategy and Custom Software Development.Read More
Clients
The Racing ManagerIndustries
-
201$1,000+50 - 249 employeesКиїв, UkraineRead More
dashdevs is a custom web and mobile app development firm based in Wilmington, Del. Founded in 2010, their team of 200 serves clients in the IT, business services, and financial services sectors. Services include Swift, JavaScript, and Java development.
Clients
FitgridIndustries
-
202$50,000+50 - 249 employeesLondon, EnglandRead More
Founded in 2006, Vector Software Ltd is an IT outsourcing company based in L'viv, Ukraine. They have more than 50 employees that specialize in application testing and development. They mostly work with mid-market and small businesses.
Clients
Stingray - Optical delousing solutions for fishing industry;Industries
-
203$10,000+2 - 9 employeesLondon, EnglandRead More
The Beaverhead Ltd is a London-based development studio. Founded in 2014, their team of fewer than 10 specializes in custom software, mobile app, and web development services. They primarily serve small to midmarket businesses.
Clients
Big Lazy PandaIndustries
-
204$1,000+2 - 9 employeesLondon, EnglandRead More
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.
-
205$10,000+50 - 249 employeesHo Chi Minh City, VietnamIT strategy consulting company INVINCIX Solutions Private Limited was founded in 2017. Their midsize team is in Singapore, Singapore; Bhubaneswar, India; Ho Chi Minh City, Vietnam and Twickenham, United Kingdom and provides IT strategy consulting, ux/ui design, IT managed services, custom software development, and more.Read More
Clients
XimpleIndustries
-
206$1,000+2 - 9 employeesLondon, EnglandAgileSchemata, a SEO company, was founded in 2014. Their small team is headquartered in London, United Kingdom and provides search engine optimization, pay per click, ux/ui design, web development, and more.Read More
Industries
-
207$1,000+10 - 49 employeesLondon, EnglandRead More
eDesk Solutions is a digital agency in Karachi, Pakistan. Founded in 2018, they have fewer than 5 employees that serve mostly small-business and midmarket clients in the e-commerce, advertising, and business sectors. Services include web development, graphic design, and mobile app development.
Clients
Sam99p.co.ukIndustries
-
208$10,000+10 - 49 employeesLondon, EnglandRead More
Aegasis Labs is an artificial intelligence company. The small team is in London, United Kingdom. Their services include Artificial Intelligence, custom software development, BI & big data consulting & SI, blockchain, and more.
Industries
-
209$5,000+2 - 9 employeesLondon, EnglandRead More
Passio is a small user experience agency. The Edinburgh, United Kingdom-based company was launched in 2016. Their team provides ux/ui design, mobile app development, product design, web design, and more.
Industries
-
210$25,000+50 - 249 employeesLondon, EnglandIntegrella is a custom software development firm established in 2007. The company focuses on Custom Software Development, Web Development, IT staff augmentation, API Development, and more and has a midsize team. The company is located in London, England; Ahmedabad, India and Dubai, United Arab Emirates.Read More
Industries
Get connected with a company for free
Tell us about your project, and we'll match you with vetted companies that meet your requirements.
Get connected with the right company for you
We'll do the work for you – finding and connecting you with service providers that meet your exact requirements.
Schedule ConsultationMost Reviewed JavaScript Developers in London
Check out a JavaScript Developers in London with the most new reviews in the past 12 months.
JavaScript Developers
London
- 11 7 new reviews
- 12 7 new reviews
- 13 7 new reviews
- 14 7 new reviews
- 15 6 new reviews
