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Top IT Service Providers in the UK

121 of 578 IT service providers ranked on evidence in the Q4 2026 edition.

Between them, the 575 best-ranked of these 585 IT service providers cover web development (528), web design (473), UI/UX design (336) and IT services (331). They also list work in London and Ahmedabad. 574 of them have written a profile you can read before you get in touch.

TrustList ranks more than 1,600 IT service providers in the UK, ordered on client reviews and profile quality, never on payment. At the top right now: Eton Digital Limited, Drupal Teams and Marzee Labs.

Narrow it down by what you need: Web Development (1,531) · Web Design (1,385) · IT Services (871) · Software Development (443) · Mobile App Development (411) · E-Commerce Development (289).

TrustList ranking

Q4 2026 edition

121 of 578 IT service providers ranked on evidence held on 12 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

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Only businesses that have told TrustList match a filter. Filters never change the order or a score.

  1. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
  2. Code Tank logo

    Mobile App Development · Web Development · Web Design

    Code Tank designs and builds online software. Its range runs from mobile apps and small-business websites to back-end management systems.

  3. Codehouse logo

    Social Media Marketing · Search Engine Optimization · Web Development

    Digital experience agency covering strategy, design, build and content for ambitious organisations, with Sitecore partnership

  4. Codescrum logo

    Web Development · Web Design · IT Services

    Codescrum is a software development company serving small and medium-sized businesses in London and San Francisco.

    On record: Based in London and San Francisco

  5. Colt Technology Services logo

    Web Development · Web Design · UI/UX Design

    Colt Technology Services supplies high-bandwidth network connections to businesses and to wholesale customers.

  6. C

    Web Development · Web Design · IT Services

    CommerceBlock builds public blockchain-based infrastructure for tokenised assets and securities.

  7. Commsworld logo

    Mobile App Development · Web Development · iOS App

    Commsworld is a Scottish telecommunications company and internet service provider with offices in Aberdeen, Edinburgh and Glasgow.

    On record: Based in Scotland, with offices in Aberdeen, Edinburgh and Glasgow

  8. ConnectNow logo

    Web Development · Web Design · IT Services

    ConnectNow is a UK technology services firm operating from Congleton.

    On record: Based in Congleton, England

  9. ContinuITy Marketing logo

    Mobile App Development · Web Development · Web Design

    ContinuITy Marketing is a marketing agency that works for managed service providers.

  10. C

    UI/UX Design · IT Services · Software Development

    Crikle is a sales platform for travel and hospitality companies.

  11. Crimson Limited logo

    Web Development · Web Design · UI/UX Design

    Crimson Limited is a UK Microsoft partner that helps organisations modernise how they work. Its stored profile says it belongs to Harvey Nash Group.

  12. CROP.network logo

    Social Media Marketing · UI/UX Design · IT Services

    CROP.network is a platform for advertising and marketing. It was created through cooperation between AdAI Digital, a digital marketing agency, and Arkuda Solutions, a software…

  13. CD

    Web Development · Web Design · IT Services

    Culturally Digital is a consultancy that helps organisations design digital services around the people who use them.

  14. Cumulus1 logo

    Web Development · Web Design · UI/UX Design

    Cumulus1 is a decentralised network of computing contributors. It uses idle processing power around the world.

  15. Custodian Solutions logo

    Mobile App Development · Web Development · Web Design

    Custodian Solutions is a software company founded by investigators and intelligence specialists.

  16. CustomEyes.me logo

    Web Development · Web Design · UI/UX Design

    CustomEyes.me is a staffing company (trading as CustomEyes LTD) that supplies temporary workers to businesses.

  17. C

    Web Development · Web Design · UI/UX Design

    Cyntergy provides service desk support and training, helping customers get more from their technology through the people who use it. Its work spans software, hardware and networks.

  18. D2 Interactive logo

    Search Engine Optimization · Web Development · Web Design

    D2 Interactive is a web and mobile development agency based in the City of London.

    On record: Based in London, UK

  19. dataJAR Ltd logo

    Mobile App Development · Custom Software Development · Web Development

    dataJAR Ltd focuses on Apple technology for education and business. Its staff hold certifications from Apple and from Jamf Software.

  20. DataMatters Ltd. logo

    Web Development · Web Design · Software Development

    DataMatters Ltd. is a software company that provides MultiValue and Pick application software and consulting.

    On record: Based in Bury

  21. DeeperThanBlue (Ltd) logo

    Mobile App Development · Web Development · Software Development

    DeeperThanBlue (Ltd) is a digital transformation consultancy that works alongside major technology vendors.

  22. designs.codes logo

    Mobile App Development · Web Development · UI/UX Design · Also in India

    designs.codes is a digital agency that develops custom web and mobile applications.

    On record: Based in Bristol, United Kingdom, and Kolkata, India

  23. didge.io logo

    Web Development · Web Design · UI/UX Design

    didge.io is a small digital studio that designs, engineers and delivers digital products and transformation projects.

  24. DIGIPHARM logo

    IT Services · Software Development · E-Commerce Development

    DIGIPHARM works on value-based healthcare, an approach where payment reflects performance and benefits to patients.

  25. Digital Catapult logo

    Mobile App Development · Web Development · iOS App

    Speeding up the practical use of advanced digital technology is the job of this UK organisation, which argues that the wider economy gains productivity and growth once those…

    On record: Based in London, UK, with regional centres

For vendors

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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?

Each firm's position comes from its client reviews and its profile, blended into one score:

  • Rating, smoothed so a single five-star review cannot outrank a firm with hundreds of good ones
  • Review volume, with diminishing returns
  • Profile completeness: the details a buyer needs to judge the firm
  • Earned trust: verification and awards, as a small lift

No firm can pay for a position. Sponsored listings are labelled and shown apart from this list. How rankings work

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