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Top IT Service Providers for Java in the UK

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

Between them, the 3 IT service providers on this page cover iOS app (2). 3 of them have written a profile you can read before you get in touch.

We list more than 350 IT service providers in the UK listed for Java 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, BrightLemon and Adaptive.

Before you shortlist, check

Experience with the frameworks and Java version you run
Automated tests and a build you can run without them
Security patching for libraries and the Java runtime
That you own the code and can hand it to another team

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Listings marked Sponsored are promoted by TrustList. They are scored like every other listing and keep the position they earn.

Zepto Systems ltd
Sponsored
Mobile App Development · Web Development · Web Design · Also in London and Islamabad
We are an IT service company providing full-scale Software Development, Bespoke Solutions, Cyber Security, Managed Project Development and Remote Developers to our clients…
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Systango
Mobile App Development · Web Development · Web Design
Systango is a software studio that its profile describes as headquartered in London, UK. It provides product engineering and IT services to organisations of different sizes.
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Smartym Pro
Mobile App Development · Web Development · Web Design
Smartym Pro, written Smartum Pro on its own site, is a software development company located in Eastern Europe.
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The order is earned on evidence: client reviews, vetting, awards and the facts a business states on its own website, which we read and date. Nobody can pay to move up. Add reviews or verified facts to your free profile to move up at the next edition; there are two ways to stand out now, and each one says what it is.

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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 (510) · India (334) · Germany (182) · Ukraine (126).

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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Top IT Service Providers for Java in the UK

Zepto Systems ltd

Systango

Smartym Pro