Top 100 JavaScript Development Companies in the United Kingdom
The Best of September 2024
Looking 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
- $5,000+
- 250 - 999 employees
- London, England
GeekyAnts is a mobile app development company that's headquartered in Bangalore, India; they also have a London office. They were founded in 2006 and have about 59 employees that provide services for mobile app development, web development, and UX/UI design services to clients of all sizes in a wide array of industries.
Clients
- Siveco Romania
- Olive Garden
- Darden
- KhataBook
Industries
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2
- $25,000+
- 1,000 - 9,999 employees
- London, England
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.
Clients
- IBM
- PayPal
- pwc
- IC Markets
Industries
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3
- $25,000+
- 250 - 999 employees
- Belfast, Northern Ireland
Founded in 2009, Unosquare, LLC is headquartered in Lake Oswego, Ore. with other locations in Guadalajara, Mexico, and Belfast, U.K. With more than 600 employees, they provide software testing and development services, combined with their staff augmentation services to meet software engineering needs, using nearshore development professionals.
Clients
- Vesta
Industries
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4
- $5,000+
- 50 - 249 employees
- London, England
DIGIS is a software development company based in Larnaka, Cyprus. They were founded in 2009 and have a team of 77 employees. They specialize in custom software, web, and mobile app development for midmarket and small business clients in the business services, financial services, and media industries.
Clients
- Huma
Industries
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5
- $25,000+
- 50 - 249 employees
- Rickmansworth, England
Light IT is a data science consulting and software development company located in Zaporizhzhia, Ukraine and founded in 2006. They have 132 employees who provide custom web and mobile software development services to various-size companies in advertising, finance, healthcare, travel, and education. This includes IT consulting, market research, QA, design, and business analytics.
Clients
- Pfizer
Industries
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6
- $5,000+
- 10 - 49 employees
- London, England
Buttercups is a custom software development company and web development firm. The Kyiv, Ukraine-based firm was established in 2019. The small team offers custom software development and web development.Read MoreClients
- MobiWallet
Industries
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7
- $10,000+
- 50 - 249 employees
- London, England
Thoughtbot is a web and mobile app development company based in Boston, MA with offices in Austin, San Francisco, New York, Raleigh, Washington D.C, and London. Since 2003, this 50+ team has delivered empowering digital solutions to enterprise-level and small companies alike.
Clients
- Health Match 360
Industries
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8
- $5,000+
- 250 - 999 employees
- London, England
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.
Clients
- United Nations
- Volkswagen
- Stanley Connect
- Delmonte
Industries
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9
- $25,000+
- 250 - 999 employees
- London, England
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.
Clients
- Philips
Industries
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10
- $25,000+
- 50 - 249 employees
- London, England
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.
Clients
- Nokia
Industries
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11
- $10,000+
- 50 - 249 employees
- London, England
In London, United Kingdom, MOHARA is a business consulting company. The agency provides business consulting and is midsize.The agency was established in 2016.Read MoreIndustries
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12
- $25,000+
- 50 - 249 employees
- London, England
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.
Clients
- Ply
- LCM Digital
- Fly Jets
- Thrive
Industries
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13
- $50,000+
- 50 - 249 employees
- Bristol, England
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.
Industries
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14
- $50,000+
- 50 - 249 employees
- Matlock, England
Human Made is an enterprise WordPress agency. Founded in 2010, they employ 65 people, and serve the enterprise market with clients in the publishing, financial, education and technology sectors. Services include bespoke web development, enterprise WordPress platform projects, artificial intelligence, and web hosting.
Clients
- ABC
Industries
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15
- $10,000+
- 10 - 49 employees
- London, England
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.
Clients
- ARTE
Industries
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16
- $25,000+
- 50 - 249 employees
- Kingston upon Thames, England
Uinno is a consultancy, solution design, and software development agency founded in 2019. Uinno has 50+ people on board with headquarters based in Ukraine and Estonia. The company works with midmarket companies and fast-growing startups. They are fully focused to solve your business challenges. No matter the technology or architecture, Uinno will find the most optimal solution and deliver a ready-to-operate product.
Clients
- OnlyFans
Industries
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17
- $25,000+
- 50 - 249 employees
- London, England
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
Clients
- Ocean Bottle
Industries
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18
- $10,000+
- 10 - 49 employees
- Whalley, England
Unicorn Road is a software development company. Launched in 2020, the team offers custom software development, ux/ui design, AR/VR development, mobile app development, and more. Their small agency is Chicago, Illinois-based.
Industries
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19
- $10,000+
- 250 - 999 employees
- Barking, England
Webskitters LLC is a software company headquartered in Miami, Fla. Founded in 2010, Webskitters LLC has a team of around 125 employees who specialize in web development, mobile app development, and mobile app modernization, primarily for small business clients.
Clients
- Mercedes-AMG
Industries
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20
- $10,000+
- 10 - 49 employees
- Bromley, England
Goodface agency is a web agency based in Kyiv, Ukraine with more than 10 members. Since their founding in 2015, they have offered web design and development solutions to small businesses that work in the industries of education, business, and financial services.
Clients
- Magnetiq Bank
- 365 Games
- Corefy
- KARL STORTZ
Industries
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21
- $25,000+
- 10 - 49 employees
- london, England
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.
Clients
- DoctorLink
Industries
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22
- $10,000+
- 10 - 49 employees
- Lymm , England
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.
Clients
- Black X
- Pepper
- Innerspace Cheshire
Industries
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23
- $10,000+
- 50 - 249 employees
- London, England
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.
Clients
- Discovery
Industries
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24
- $5,000+
- 10 - 49 employees
- Bristol, England
Xedrum is a website development company. They focus on web development, cloud consulting & SI, mobile app development, e-commerce development, and more and were established in 2021. Their small team is headquartered in Lviv, Ukraine.Read More -
25
- $5,000+
- 10 - 49 employees
- London, England
Inventiff is a website development firm. Established in 2019, the small firm is headquartered in London, United Kingdom and Cluj-Napoca, Romania. Their services include web development, mobile app development, web design, ux/ui design, and more.
Industries
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26
- $10,000+
- 250 - 999 employees
- London, England
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.
Clients
- Abbott
- BOSCH
- KPMG
- Western Union
Industries
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27
- $10,000+
- 10 - 49 employees
- Edinburgh, Scotland
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.
Clients
- NHS
Industries
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28
- $10,000+
- 10 - 49 employees
- London, England
Founded in 2007, Softblues is a software development company headquartered in Lviv, Ukraine. Their team of approximately 22 employees serves small to mid-sized businesses, particularly in the e-commerce and education sectors. They specialize in custom software as well as web and e-commerce development.
Clients
Industries
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29
- $50,000+
- 250 - 999 employees
- London, England
SPD Group is an IT and development company in London, United Kingdom; Kyiv and Cherkasy, Ukraine; and Tel Aviv, Israel. Founded in 2006, they have about 16 employees that serve mostly midmarket and small-business clients in the business, financial, and IT sectors. Services include custom software development, AI, and IoT development.
Clients
- PitchBook Data
Industries
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30
- $50,000+
- 1,000 - 9,999 employees
- Basingstoke, England
Software Mind is a global IT services company headquartered in Krakow, Poland, with offices in Warsaw, Rzeszow, and Bielsko-Biala in Poland as well. Founded in 1999, their team of 116 works with clients from startups to enterprises to offer assistance in custom software development, enterprise app modernization, and BI & big data consulting & SI. They mainly work in the medical and financial services industries.
Clients
- Backbase
- Baillie Gifford
- Branch
- Callcredit
Industries
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