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Top IT Service Providers for JavaScript in the UK

477 IT service providers ranked by rating, review volume and listing quality.

JavaScript spans more ground than any other language on this list. It runs in every browser, on servers through Node, and inside mobile and desktop applications, so a firm listing it may be doing front-end interface work, back-end services, or both.

The useful clarification is which part of the stack, and with what. Front-end work is dominated by a handful of frameworks and the choice affects hiring for years afterwards. Back-end JavaScript competes with other server languages and is chosen for good reasons and bad ones. Ask why they would pick it for your project specifically — a clear answer indicates a team choosing tools, and a vague one indicates a team using whatever they already know.

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Between them, the 476 best-ranked of these 477 IT service providers cover web development (464), web design (380), PHP (304) and .NET (288). They also list work in London and United States of America. 473 of them have written a profile you can read before you get in touch.

We list more than 450 IT service providers in the UK listed for JavaScript development. The order comes from what each firm publishes and what has been verified about it, never from payment — at the top right now: Zepto Systems ltd, Marzee Labs and Webcurl LTD.

Before you shortlist, check

Which frameworks they use, and why for your project
Automated tests and code review as standard
Performance and accessibility targets agreed up front
How dependencies are kept up to date after launch

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MerchantCantos
Search Engine Optimization · Web Development · Web Design
We are an international, creative communications agency. And we understand how business works.
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zsah
Web Development · Web Design · IT Services
At zsah we provide IT Managed Services; Private and Hybrid Cloud Services (IaaS, PaaS and SaaS) together with application development, networking and hosted infrastructure…
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Axios Systems
Web Development · Web Design · IT Services
Why do we exist? Philosophers we are not. Service management champions we are. So let’s keep it simple.
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Solutionize Global
Web Development · Web Design · IT Services
Solutionize Global is a trusted provider of managed services, professional services and assured resources for the technology and digital sector.
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Evoco
Web Development · Web Design · IT Services
Evoco is owned and operated by ex-Gartner CIO & senior consultants and ex-Kainos Development, DevOps and Testing experts.
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BRIGHTMAST
Web Development · Web Design · IT Services
BRIGHTMAST harnesses the transformative power of artificial intelligence and cognitive computing, enabling our clients and partners to automate functions, roles, decisions and…
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Mba IT
Web Development · Web Design · IT Services
MBA IT is an established IT solutions and services partner, working with organizations in and around London.
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Westbrook International ltd
Web Development · Web Design · IT Services
Westbrook International is a leading exponent of innovating business in the cloud.
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Bodoni Systems
Web Development · Web Design · UI/UX Design
Bodoni Systems are the developers and publishers of pressSIGN and are the leading colour management consultancy in the UK for graphics arts.
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Edit Websites Ltd
Web Development · Web Design · UI/UX Design
We created our software to help businesses and organizations manage their websites easily. With Edit.com you will be able to edit your website when you need to.
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Nomon Internet Solutions Ltd
Web Development · Web Design · UI/UX Design
Custom website design and corporate website design for UK businesses. Nomon Internet Solutions develop bespoke custom websites for small and medium businesses.
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Obelisk Creative
Mobile App Development · Web Development · Web Design
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Boost Digital Media Ltd
Mobile App Development · Web Development · Web Design
DEVELOPMENT - that is more than just WordPress At the core of what we do is web development.
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LogicSpot
Mobile App Development · Search Engine Optimization · Web Development
We are a full-service digital agency based in Richmond, London, with a focus on e-commerce.
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Snowdrop Solutions
Mobile App Development · Web Development · Web Design
Snowdrop Solutions Limited is a team of location experts, dedicated to digital mapping.
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Auto Trader UK
Web Development · Web Design · IT Services
Powered by tech. Made possible by people. We’re proud of our people-centred culture which, combined with our tech and data expertise, makes us one of the UK’s leading companies.
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Time Out Group plc
Web Development · Web Design · IT Services
Time Out Group is a global media and leisure business that inspires and enables people to explore and enjoy the best of the city.
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Cirro Solutions
Web Development · Web Design · IT Services
Cirro delivers better digital outcomes to financial services, enterprise organisations, citizens and academia through the effective deployment and use of innovative Cloud Services.
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Optima Graphic Design Consultants Ltd
Social Media Marketing · Web Development · Web Design
Optima has 24 years of experience working with a wide range of local, national and international clients.
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Zynstra
Web Development · Web Design · IT Services
Zynstra is a software company run by highly experienced technology entrepreneurs.
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Lucid Crystal Ltd
Web Development · Web Design · UI/UX Design
clear. web. expertise. We specialize in advanced online application development and exceptional websites.
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Pragmateq Limited
Web Development · Web Design · UI/UX Design
Hi, my name's Gary Crook, freelancer and founder of Pragmateq Limited, a UK-based business specializing in cross-platform native app development using the Appcelerator Titanium SDK…
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PJ Web Solutions Ltd
Web Development · Web Design · UI/UX Design
Manchester Web Designers, Web Developers & Back Office Systems providers.
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CML Team LTD
Web Development · Web Design · IT Services
We are a professional team of senior software engineers with more than 10 years of experience in Java and Web technology stacks.
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How is this ranking worked out?

The order comes from what each firm publishes and what has been verified about it, and never from payment:

Profile completeness: the details a buyer needs to judge a firm — what it does, who it serves, how it prices, who it has worked for
Earned trust: verification, awards and the other checks a firm has actually passed
Client reviews, where they exist: the rating is smoothed, so one five-star review cannot outrank a firm with a hundred good ones, and volume counts with diminishing returns

Client reviews are still rare across this catalogue, so on most lists today the order is set by the first two. A firm near the top is the best-documented and best-verified one we hold, which is not the same claim as the best one to hire. Use the list to build a shortlist, then check the firms yourself.

Sponsored listings are labelled and shown apart from this list. How rankings work

Only firms whose profile names the UK are counted here, so a firm that lists a town but no country is not yet included.

Where else can I look?

The same list elsewhere: USA (762) · India (392) · Germany (214) · Ukraine (145).

Other specialisms in the UK: UI/UX design (941) · e-commerce (854) · Android app development (812) · iOS app development (800) · WordPress (752).

Every IT service provider in the UK: the full list.

Every category in the UK: the UK country page.

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Everything here links back to the same verified catalogue. Pick your next stop.

Top IT Service Providers for JavaScript in the UK

MerchantCantos

zsah

Axios Systems

Solutionize Global

Evoco

BRIGHTMAST

Mba IT

Westbrook International ltd

Bodoni Systems

Edit Websites Ltd

Nomon Internet Solutions Ltd

Obelisk Creative

Boost Digital Media Ltd

LogicSpot

Snowdrop Solutions

Auto Trader UK

Time Out Group plc

Cirro Solutions

Optima Graphic Design Consultants Ltd

Zynstra

Lucid Crystal Ltd

Pragmateq Limited

PJ Web Solutions Ltd

CML Team LTD