Companies · category

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

Filter by fitbudget, engagement, size and more

Innova Technology Services
Web Development · Web Design · IT Services
With over 100 combined years of experience in the design and consultancy of IT Infrastructure projects, Innova is now recognized as a market leader in their field.
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Clicky Media
Mobile App Development · Search Engine Optimization · Social Media Marketing
Clicky is an award-winning, digital marketing agency with offices in Chester, Nottingham, and London.
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Mobile Rocket
Mobile App Development · Web Development · Web Design
Mobile Rocket builds mobile apps that guarantee to improve your business communication, engage your audience and grow your business.
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ComLaude
Mobile App Development · Web Development · Web Design
Com Laude provides domain name portfolio management services and online brand protection for brand owners.
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Symbios Group
Mobile App Development · Web Development · Web Design
Symbios Group was established in 2000 as a specialist mobile content provider, launching one of the first websites on the planet to sell Ringtones using the internet as a sales…
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stickee
Mobile App Development · Web Development · Web Design
We are a creative technology agency that creates enjoyable and immersive software and digital experiences that stick with our audience.
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Creativebyte
Web Development · Web Design · UI/UX Design
Welcome to creativebyte, an established design agency based in Poole on the South Coast.
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Purify Digital Limited
Web Development · Web Design · IT Services
Purify Digital specializes in identifying and delivering large volumes of customers interested in purchasing your product or service.
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CMS Peripherals
Web Development · Web Design · IT Services
CMS Distribution connects the best technologies to the smartest customers.
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Jahyz MarkTech
Web Development · Web Design · IT Services
Our digital marketing and automation expertise in marketing technologies can help you design and deliver effective marketing programs generating sales revenues.
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Assettrac Ltd
Web Development · Web Design · Software Development
Assettrac specializes in providing a quick and easy way to manage rapidly changing asset information in any sector.
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Information Edge
Web Development · Web Design · UI/UX Design
Information Edge is a world leader in innovative business intelligence solutions.
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MillerTech
Web Development · Web Design · CRM Development
At MillerTech we specialize in implementing and supporting membership and contact management (CRM) systems in the Not for Profit (NfP) sector for 30 years.
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180Vita Ltd
Web Development · Web Design · Software Development
180Vita Ltd is the people behind some of the gaming industry's premier sites. Founded in 2008 as PokerVIP, we enjoyed speedy growth.
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ASK4 Ltd
Web Development · Web Design · UI/UX Design
ASK4 is an expert internet service provider specializing in student accommodation in the UK, Ireland, Germany, Spain, Portugal, and Poland.
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Buchanan Computing Ltd
Web Development · Web Design · IT Services
Buchanan Computing is a successful private company based in Hammersmith, London.
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Wayve
Web Development · Web Design · IT Services
Less mapping, more intelligence. End to end machine learning. We're doing something different.
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RDF Digital
Web Development · Web Design · IT Services
RDF Digital has been offering a complete portfolio of IT solutions since 1994.
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Digital Wave Solutions
Mobile App Development · Web Development · Web Design
Open Door is the most advanced real-time mobile app for engaging new customers through Face 2 Face contact.
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WayMaker Digital
Social Media Marketing · Web Development · Web Design
At WayMaker Digital, we specialize in helping organizations to deliver on the strategic projects.
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Moneysupermarket Group
Web Development · Web Design · IT Services
Moneysupermarket Group PLC is an established member of the FTSE 250 index.
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Netpremacy Global Services
Web Development · Web Design · IT Services
Founded in 1998, Netpremacy Global Services provides global managed networks and cloud solutions, and has offices in Leeds (HQ), London, Hong Kong and California.
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Nuvias Group
Web Development · Web Design · IT Services
Nuvias Group is the pan-EMEA, high-value distribution business, which is redefining international, specialist distribution in IT.
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Melius Group Limited
Web Development · Web Design · IT Services
Melius Group was founded in 2012 with a clear mission to deliver value to businesses on a global scale.
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For vendors

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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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More on TrustList

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

Top IT Service Providers for JavaScript in the UK

Innova Technology Services

Clicky Media

Mobile Rocket

ComLaude

Symbios Group

stickee

Creativebyte

Purify Digital Limited

CMS Peripherals

Jahyz MarkTech

Assettrac Ltd

Information Edge

MillerTech

180Vita Ltd

ASK4 Ltd

Buchanan Computing Ltd

Wayve

RDF Digital

Digital Wave Solutions

WayMaker Digital

Moneysupermarket Group

Netpremacy Global Services

Nuvias Group

Melius Group Limited