Top 100 JavaScript Development Companies in London
The Best of September 2024
Looking 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
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31
- $25,000+
- 10 - 49 employees
- London, England
Together is a full-service agency that builds brands, websites and digital products for good tech companies around the world.
Clients
- Unit
Industries
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32
- $5,000+
- 10 - 49 employees
- London, England
RCCO - Creative Sales & Marketing, an user experience design agency, is located in London, United Kingdom. Launched in 2018, the small team specializes in ux/ui design, branding, digital strategy, and web design.
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33
- $10,000+
- 50 - 249 employees
- London , England
Web development firm Wise Vision was founded in 2018. The agency provides web development, e-commerce development, accounting, enterprise app modernization, and more and has a small team. The agency is in L'viv, Ukraine.
Clients
- Beep Auto
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34
- $5,000+
- 10 - 49 employees
- London, England
ExpandX is a web services provider and digital marketing agency headquartered in Sofia, Bulgaria. It also has locations in London, New York, Munich and Barcelona. The company was founded in 2015 serving clients globally with projects of different sizes and niches. ExpandX provides web development services, e-commerce solutions, social media marketing, PPC, web design, video marketing, and other related digital services.
Clients
- High Touch Investment Corp Inc (USA)
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35
- $50,000+
- 10 - 49 employees
- London, England
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.
Clients
- Togetherall
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36
- $10,000+
- 50 - 249 employees
- London, England
Codest is a software development company that was founded in 2009 and has offices in Krakow and Warsaw, Poland. They have 40 employees specialized in the end-to-end building of custom products, primarily for companies in e-commerce, marketplace, adtech, fintech, proptech and SaaS. Services include backend, frontend and product design.
Clients
- Mixfit Inc. (CH)
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37
- $10,000+
- 2 - 9 employees
- London, England
Webpop Design is a web design agency based In London. Founded in 2008, their small team is known for their UX/UI design, branding and SEO efforts as well. They work primarily with small businesses in multiple industries.
Clients
- Datameer
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38
- $25,000+
- 50 - 249 employees
- Croydon, England
Founded in 2005 and headquartered in Croydon, UK, GoodCore Software specializes in bespoke software development. WIth a team of about 50 employees, the company offers web and mobile app development to startups and established businesses alike. Engagement options include fixed- cost and dedicated development teams.
Clients
- PMLL
- GCBF
- Hirevine
- London Women's Clinic
Industries
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39
- $10,000+
- 10 - 49 employees
- London, England
Old.St Labs is a software development business based in London. The business, founded in 2020, has a team of more than ten that provides custom software development, mobile app development, UX/UI design, web design & development, and AI services. Old.St Labs serves small and mid-market companies in the advertising & marketing, education, financial services, health care & medical, and legal industries.
Clients
- Kopona
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40
- $25,000+
- 250 - 999 employees
- London , England
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.
Clients
- First Abu Dhabi Bank
- Basis Bank
- FICO
- TeraData
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41
- $5,000+
- 10 - 49 employees
- London, England
An'n'Bo - Interface Studio is a studio founded in Rivne, Ukraine in 2017 with no more than 10 experts. They specialize in UX/UI, product, and web design solutions for small and mid-market firms in the fields of IT, consumer products, and business services.
Clients
- OLX
Industries
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42
- $5,000+
- 10 - 49 employees
- London, England
Mifort is a web development firm. Founded in 2015, the team focuses on web development and mobile app development. Their small company is Tallinn, Estonia-based.
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43
- $10,000+
- 50 - 249 employees
- London, England
Angry Nerds is a software development house based on Wroclaw, Poland. Established in 2015, they have more than 60 employees who provide app development services for global clients consisting mostly of small and mid-market firms. Their services include custom software development, web development, and mobile development for Android and iOS. They also offer staff augmentation.
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44
- $10,000+
- 2 - 9 employees
- London, England
56 Degrees is a web development agency with a team of under 10 employees. Based in London and founded in 2010, they provide web development, web design, and e-commerce development services.
Clients
- GiffGaff Studio
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45
- $25,000+
- 10 - 49 employees
- London, England
Totally.Tech is a custom software development company founded in 2000. The agency offers custom software development, enterprise app modernization, mobile app development, and application management & support and has a small team. The agency is headquartered in London, United Kingdom.Read MoreClients
- Start Up Loans (British Business Bank)
Industries
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46
- $10,000+
- 50 - 249 employees
- London, England
Powercode is a web development agency based in Kyiv, Ukraine founded in 2015. They are operated by a team of 66 who are experts in web, mobile app, and custom software development for clients ranging from startups to enterprises. They have experience working in industries such as financial services, business services, and IT. They are also familiar with working with platforms like Amazon, Linux servers, and Azure, among others.
Industries
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47
- $10,000+
- 50 - 249 employees
- London, England
Kernelics is a software development company founded in 2020 with over 50 employees. They provide web development, mobile app development, and AI solutions from their office in Minsk, Belarus. They work with small businesses across various industries.
Industries
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48
- $5,000+
- 10 - 49 employees
- London, England
Indie Ridge Limited is a small web design company located in London, United Kingdom. Established in 2016, the team specializes in web design, web development, ux/ui design, e-commerce development, and more.
Industries
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49
- $25,000+
- 10 - 49 employees
- London, England
Purr Digital is a software development agency that has been offering web development, mobile app development, and custom software development to their small business and mid-market clients in the hospitality, arts and entertainment, and consumer products and services industries since 2013. Their 50 employees are based out of their London and Birmingham, UK offices.
Clients
- Elder
Industries
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50
- $50,000+
- 50 - 249 employees
- London, England
ClerksWell is a custom software development firm. They are headquartered in London, United Kingdom and have a midsize team that focuses on custom software development, web development, IT strategy consulting, web design, and more. The firm was founded in 1996.
Industries
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51
- $10,000+
- 10 - 49 employees
- Guildford, England
Founded in 2009, Lightflows is a development company based in Guildford, U.K. They primarily work with midmarket clients from various industries including advertising, marketing, business services, consumer products, finance, and healthcare.
Clients
- HomeViews
Industries
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52
- $10,000+
- 10 - 49 employees
- London, England
Hue&machine, an UX agency, is located in London, United Kingdom. They specialize in ux/ui design, custom software development, web design, and web development and were founded in 2020.Read MoreClients
- Stanford University
- Microsoft
- Clair
- Henkel
Industries
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53
- $10,000+
- 250 - 999 employees
- London, England
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.
Clients
- ABB
Industries
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54
- $25,000+
- 2 - 9 employees
- London, England
Hero Team is a digital agency located in London. Founded in 2018, their services include mobile app and web development in addition to UX/UI design. Their team of 3 works with small businesses.
Clients
- Hugo
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55
- $25,000+
- 10 - 49 employees
- London, England
Founded in 2014, SoBold is a design and development agency headquartered in London. Their team of 10 specialize in web development, web design, print design, and social media marketing services for clients. Their clients primarily work with with small and mid market companies in the education, health care, hospitality, energy, and consumer product industries.
Clients
Industries
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56
- $25,000+
- 50 - 249 employees
- London, England
Founded in 2010, Magora is a 50+ team of web and mobile app designers and developers based in London. Whether it’s B2B or B2C, the firm creates bespoke software that integrates with existing business solutions to enable user-centered interaction and scalable software architecture.
Clients
- Danone
Industries
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57
- $5,000+
- 10 - 49 employees
- London, England
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.
Clients
- Vivienne Westwood - The Vivienne Foundation
- Artisan AI
- Cogency Global
- Moonbeam Car Wash
Industries
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58
- $10,000+
- 10 - 49 employees
- London, England
Plug & Play is a UX/UI agency based in London and Surrey. Founded in 2007, they are specialists in user experience and user interface design for software, websites and custom applications. They also have a front-end development service to support clients with the design implementation. Plug & Play work across a number of sectors with their clients ranging from funded startups to large corporations such as Legal & General.
Clients
- WWF
- Powerleague
- Give A Grad A Go
- RSL Awards
Industries
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59
- $1,000+
- 10 - 49 employees
- London, England
Seahawk Media is a web design and development company based in Boston, but with offices around the world. Founded in 2015, they also provide SEO, branding, and UX/UI design services. They're also a GoDaddy partner.
Industries
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60
- $50,000+
- 50 - 249 employees
- London, England
Thinslices is a web development company. They are headquartered in Iasi, Romania and have a midsize team that offers web development, mobile app development, and ux/ui design. The agency was established in 2010.
Industries
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