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Top IT Service Providers for Java in the UK

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

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Between them, the 4 IT service providers on this page cover mobile app development (3), UI/UX design (3) and android (3). 4 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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Only businesses that have told TrustList match a filter. Filters never change the order or a score.

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

  1. Zepto Systems ltd logo

    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…

    Write a review
  2. Systango logo

    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.

    Write a review
  3. Smartym Pro logo

    Smartym Pro

    Mobile App Development · Web Development · Web Design

    Working from Eastern Europe, Smartum Pro builds software for clients who want a single partner from idea to launch.

    Write a review
  4. nChain logo

    nChain

    Web Development · Web Design · UI/UX Design

    Based mainly in London, this blockchain research and development company has tied its whole identity to one network: Bitcoin SV, which it regards as the original Bitcoin.

    Write a review
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More it service providers rankings

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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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  • Approved listings show the Verified badge here and on their profile
  • It earns a rank number and counts towards the TrustList Score; renewed yearly
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Sponsor the Java ranking

Paid · always labelled

  • A Sponsored card above the Java ranked list
  • Marked Sponsored, and it never changes the order
  • Booked by the month; cancel any time
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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.

Other services in the UK

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