Top 100 JavaScript Development Companies in the United Kingdom
The Best of March 2025Looking for a top JavaScript developer in the United Kingdom?
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 United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom JavaScript Developers
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1$25,000+1,000 - 9,999 employeesLondon, EnglandRead More
Headquartered in New York, Vention is a custom software development company with additional offices in Marietta, Ga. and Iselin, N.J. Since 2002, Vention has helped startups and fast-growing tech companies fill in their talent gap and create robust web and mobile solutions that users love. To date, Vention's talent pool includes 3500+ engineers with experience in all of the latest technologies.
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IBM PayPal pwc IC MarketsIndustries
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2$10,000+250 - 999 employeesLondon, EnglandGeekyAnts is a custom software development firm. They are located in San Francisco, California; Bengaluru, India and London, England and have a midsize team. Their services include Custom Software Development, Mobile App Development, Web Development, Artificial Intelligence, and more. The firm was launched in 2006.Read More
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Siveco Romania Olive Garden Darden KhataBookIndustries
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3$10,000+10 - 49 employeesLondon, EnglandRead More
Marzee Labs is a web development company that has been offering web design, web development, ad e-commerce development services to their clients since 2013. Their 10 employees are based out of their Porto, Barcelona, London, and Setúbal, Portugal offices.
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ARTEIndustries
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4$50,000+50 - 249 employeesMatlock, EnglandHuman Made is a website development company. They are based in New York, New York; Matlock, England; South Brisbane, Australia and Appleton, Wisconsin and have a midsize team. Their services include Web Development. The firm was launched in 2010.Read More
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Sony Playstation Disney Standard Chartered HarvardIndustries
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5$10,000+50 - 249 employeesLondon, EnglandIn London, United Kingdom, MOHARA is a business consulting company. The agency provides business consulting and is midsize.The agency was established in 2016.Read More
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6$25,000+50 - 249 employeesRickmansworth, EnglandWebsite development company Light IT Global was established in 2006. The midsize Rickmansworth, England-based team focuses on Web Development, Custom Software Development, Mobile App Development, Artificial Intelligence, and more.Read More
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PfizerIndustries
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7$25,000+50 - 249 employeesLondon, EnglandRead More
DotCode is a design and development company based in Lviv, Ukraine, and founded in 2018. Their team of more than 10 provides web development, web design, and e-commerce development solutions for clients in the fields of hospitality, advertising, and financial services.
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Ply LCM Digital Fly Jets ThriveIndustries
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8$50,000+50 - 249 employeesBristol, EnglandRead More
Torchbox is a web design agency launched in 2000. The firm focuses on web design, web development, ux/ui design, pay per click, and more and has a midsize team.
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9$25,000+50 - 249 employeesLondon, EnglandRead More
Imaginary Cloud is a Web, Mobile and AI Software Development and UX/UI Design Company with offices in the UK, US and Portugal. In the last 11 years they have helped build and scale more than 300 applications, from Start-ups, Scale-ups to Enterprises, winning several global awards. They offer a comprehensive skill set of developers, data scientists and designers coupled with a streamlined agile process.
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NokiaIndustries
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10$25,000+250 - 999 employeesLondon, EnglandRead More
Infinum is a software development company in San Francisco, CA. The 50+ team has equal experience in mobile and web development. They work with clients from a variety of industries, including business and financial services and automotive.
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PhilipsIndustries
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11$10,000+50 - 249 employeesLondon, EnglandFounded in 2013, Valor Software is a web design agency. The company focuses on Web Design, UX/UI Design, IT strategy consulting, IT staff augmentation, and more and has a midsize team.Read More
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BreetheIndustries
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12$10,000+250 - 999 employeesLondon, EnglandWebskitters, an app development firm, was established in 2010. The midsize Kolkata, India-based team specializes in Mobile App Development, Web Development, E-Commerce Development, IoT development, and more.Read More
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Mercedes-AMGIndustries
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13$10,000+50 - 249 employeesLondon, EnglandThoughtbot is a midsize web development firm located in New York, New York and London, England. Founded in 2003, the team provides Web Development, Mobile App Development, UX/UI Design, cloud consulting & SI, and more.Read More
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Health Match 360Industries
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14$25,000+50 - 249 employeesLondon, EnglandRead More
Tech Alchemy is a software development studio based in London. Founded in 2016, they have around 150 employees who provide startups and small to medium-sized businesses with custom software development, blockchain development, and web & mobile app design and development. Services include prototyping, discovery, MVP development, and Web3 digital transformation
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Ocean BottleIndustries
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15$5,000+10 - 49 employeesLondon, EnglandWebsite development firm Solar Digital was launched in 2016. They are based in London, England and Odesa, Ukraine and have a small team. Solar Digital provides Web Development, Custom Software Development, UX/UI Design, Web Design, and more.Read More
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Stark Shipping (analytical portal of marine industryIndustries
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16$10,000+50 - 249 employeesLondon, EnglandRead More
SovTech is a custom software development company based in Johannesburg with offices in London and Nairobi. Founded in 2012, they work with enterprise and midmarket businesses with a focus on clients in the financial services industry.
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DiscoveryIndustries
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17$25,000+10 - 49 employeeslondon, EnglandRead More
Thought&Function is a digital agency founded in London in 2017 with no more than 10 members. They are experts in web development, mobile app development, and UX/UI design solutions for clients in the industries of financial services, education, and health care.
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DoctorLinkIndustries
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18$10,000+10 - 49 employeesLymm , EnglandRead More
Visions Design Lymm is a design studio based in Lymm, UK. Their team of over 10 was founded in 2010 and serves small and midmarket businesses. Services include web and graphic design as well as branding.
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cocreatd Black X Unreasonable System 7Industries
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19$10,000+10 - 49 employeesEdinburgh, ScotlandRead More
GearedApp is a software development firm based in Edinburgh, Scotland. They were founded in 2013 and have a team of 11 employees who specialize in mobile development, web development, and UX/UI design. They work mostly with small business clients in the healthcare, business services, and education industries.
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NHSIndustries
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20$10,000+50 - 249 employeesLondon, EnglandDigitalSuits, an e-commerce development firm, was founded in 2016. They are in Miami, Florida; L'viv, Ukraine; Kraków, Poland and Tallinn, Estonia and have a midsize team. DigitalSuits focuses on E-Commerce Development, Web Development, IT staff augmentation, and Custom Software Development.Read More
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Koio Scentbird Luma Nutrition YepodaIndustries
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21$50,000+250 - 999 employeesLondon, EnglandEstablished in 2006, SPD Technology is a custom software development company. The company offers Custom Software Development, Web Development, Mobile App Development, IT managed services, and more and has a midsize team. The company is in London, England; Seattle, Washington and Kyiv, Ukraine.Read More
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PitchBook DataIndustries
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22$5,000+50 - 249 employeesStamford, EnglandOffshorly, a midsize custom software development company, is located in Stamford, England and Quezon City, Philippines. They provide Custom Software Development, Artificial Intelligence, Web Design, Web Development, and more and were founded in 2014.Read More
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7-11 (Philippines) Dribble Portfolio: https://dribbble.com/offshorlyIndustries
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23$10,000+10 - 49 employeesBromley, EnglandUX design agency Goodface agency was founded in 2016. Their small team is based in Kyiv, Ukraine and Bromley, England. Their services include UX/UI Design, Custom Software Development, and Web Development.Read More
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Magnetiq Bank 365 Games Corefy KARL STORTZIndustries
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24$5,000+250 - 999 employeesLondon, EnglandRead More
Konstant Infosolutions is a mobile app and web developer that focuses on global technology and innovation. Founded in 2003 and headquartered in Jaipur, Rajasthan, their 170+ professionals are leaders in software solutions and cutting-edge technologies.
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United Nations Volkswagen Stanley Connect DelmonteIndustries
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25$10,000+1,000 - 9,999 employeesLondon, EnglandLarge web development firm Devsinc, is located in San Jose, California; Lahore, Pakistan; Dubai, United Arab Emirates and London, England. They specialize in Web Development, Mobile App Development, IT staff augmentation, Custom Software Development, and more and were launched in 2009.Read More
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Xiaomi Levis Al-Jouf (JADCO) Al Rajhi Bank (Saudia Arabia)Industries
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26$10,000+250 - 999 employeesLondon, EnglandFounded in 2012, SENLA is a midsize custom software development firm. Their team specializes in Custom Software Development, Web Development, Mobile App Development, IT staff augmentation, and more. The company is based in Warszawa, Poland; London, England and Zagreb, Croatia.Read More
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Abbott BOSCH KPMG Western UnionIndustries
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27$5,000+10 - 49 employeesLondon, EnglandRead 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.
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28$1,000+10 - 49 employeesLondon, EnglandRead More
Agile Digital Agency is a marketing technology agency based in London. The agency has a team of less than ten that provides email marketing, SEO, and other digital marketing services to small and midmarket companies and institutions.
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Singleton Law Firm (USA)Industries
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29$25,000+10 - 49 employeesLondon, EnglandFilter is a web design company. The London, England-based firm was launched in 2016. The small team specializes in Web Design, Web Development, and Digital Strategy.Read More
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30$50,000+1,000 - 9,999 employeesLondon, EnglandRead More
Andersen is an international custom software development company that, among other things, specializes in healthcare software development. Since its founding in 2007, the company has opened more than ten development centers and about ten sales offices worldwide. More than 2700 highly qualified specialists work on developing, customizing corporate IT solutions, web applications, and mobile applications. Andersen has completed over 950 projects and received hundreds of positive reviews from clients worldwide. Today the company is working on over 250 projects. Our technology stack includes .NET, C#, Java, Python, PHP, Node.js, TypeScript, Golang, C++, JavaScript, Angular, React.js, Vue.js, HTML, CSS, Java (Android), Swift / Objective C (iOS), React Native, and more. We also offer manual and automated testing, business and data analysis, UI/UX design, DevOps services, IT security management, and L1, L2, L3 support.
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SamsungIndustries
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