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

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BSMimpact
Web Development · Web Design · IT Services
BSMimpact is a global consulting and training organization focused on the non-technical elements of ICT and engages in the provision of Business and IT services leveraging best…
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CloudRock Partners
Web Development · Web Design · IT Services
We are a specialist HR technology transformation consultancy, navigating organizations through their cloud journey and the obstacles that may bring.
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Razberi Technologies
Web Development · Web Design · IT Services
Razberi Technologies makes it simple to manage and secure video surveillance and network-connected devices.
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Digital Barriers plc
Web Development · Web Design · IT Services
Redefining edge-intelligent video surveillance and security. Digital Barriers is a world leader in edge-intelligent solutions for the global surveillance and security markets.
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Trustmarque
Web Development · Web Design · IT Services
Trustmarque delivers customer-centric IT solutions that enable better outcomes.
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MTI
Web Development · Web Design · IT Services
MTI is a global solutions and service provider, underpinned with operational excellence and experience gained through thousands of client and partner engagements.
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Air IT
Web Development · Web Design · IT Services
Independently ranked amongst the world’s most progressive Managed Service Providers (MSPs), we’re proud to be the Midlands’ No.1.
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OSF Global Services
Web Development · Web Design · IT Services · Also in Canada
OSF Global Services is a top digital Cloud transformation specialist and leading global commerce solutions company that provides consulting, application development and…
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BCSG
Web Development · Web Design · IT Services
BCSG is a leading cloud services marketplace provider; our experienced team has been providing IT applications to small businesses for the past 10 years in partnership with global…
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Armakuni
Web Development · Web Design · IT Services
In an era where speed to market key differentiator, Armakuni are specialists in driving the cultural and technical change required to build high quality, robust & reliable software…
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AMPP Group
Web Development · Web Design · IT Services
AMPP Group is a fast-growth, culture-driven technology company building B2B marketplaces that change the way business connects in emerging markets.
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Synel Industries UK
Web Development · Web Design · IT Services
Synel Industries develop, produce, supply and install computerized systems for data collection, time & attendance, job costing, registration, and access control applications.
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Quadrant Security Group
Web Development · Web Design · IT Services
Quadrant Security Group (QSG) is one of the UK’s largest independent security systems integrators, delivering end-to-end security and surveillance solutions from systems design to…
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Norbain SD
Web Development · Web Design · IT Services
Norbain is the UK’s most successful distributor of IP, CCTV, Access Control and Intruder Detection solutions.
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Loop Email
Web Development · Web Design · IT Services
We understand that managing email can feel like hard work, but try and imagine a world where you love email – where email works hard for you.
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Parity Group PLC
Web Development · Web Design · IT Services
We are a consultancy that focuses on the relationship between technology and people, to help you unlock the true power of data within your organization.
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Triangulate Distribution Ltd
Web Development · Web Design · IT Services
We are a market-leading specialist software distributor and consultancy. We deliver state of the art, next-generation, software-defined, hyper-converged cloud solutions.
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DBD Media
Social Media Marketing · Web Development · Web Design
DBD has now joined forces with Verb Brands. DBD is a digital marketing agency with a search at its heart.
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Brandworkz
Social Media Marketing · Web Development · Web Design
Brandworkz Brand Management Software is here to help simplify and streamline the management of all your brand elements and brand assets.
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Coded Pixel Ltd
Web Development · Web Design · UI/UX Design
Coded Pixel Ltd was founded by Jack Lawry in 2012 and is basedin Bartley (near Southampton) within the beautiful New Forest in Hampshire.
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AmazeRealise
Web Development · Web Design · IT Services
We do what very few digital agencies do. Our work is focused on creating advantages for your customers, your staff and your business.
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Quantexa
Artificial Intelligence - AI · Web Development · Web Design
Quantexa empowers organizations to drive better decisions from their data.
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Featurespace
Web Development · Web Design · IT Services
Featurespace is the inventor of Adaptive Behavioral Analytics and the award-winning ARIC Risk Hub. We're globally recognized as the industry expert in combatting financial crime.
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Toaster
Web Development · Web Design · IT Services
Toaster crafts beautiful design with emerging technology to create connections between brands and people.
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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

BSMimpact

CloudRock Partners

Razberi Technologies

Digital Barriers plc

Trustmarque

MTI

Air IT

OSF Global Services

BCSG

Armakuni

AMPP Group

Synel Industries UK

Quadrant Security Group

Norbain SD

Loop Email

Parity Group PLC

Triangulate Distribution Ltd

DBD Media

Brandworkz

Coded Pixel Ltd

AmazeRealise

Quantexa

Featurespace

Toaster