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Top IoT Development Companies in the UK

3 of 29 IoT development companies ranked on evidence in the Q4 2026 edition.

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Between them, the 29 IoT development companies on this page cover web development (23), iOS app (19), android (19) and mobile app development (16). 29 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

3 of 29 IoT development companies ranked on evidence held on 6 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.

How this is rankedAbout this edition
All IoT development companies 3 rankedSMEs 3 ranked
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  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. UCW Industries logo

    UCW Industries

    Mobile App Development · Web Development · iOS App

    UCW Industries is a company registered in England and Wales that works across embedded systems, wireless, big data and web development.

    Write a review
  3. ULTRA IoT logo

    ULTRA IoT

    Mobile App Development · Web Development · iOS App

    ULTRA IoT is an IoT insights start-up with bases in London and Amsterdam.

    Write a review

    On record: Based in London and Amsterdam

  4. Wearable Technologies Limited logo

    Wearable Technologies Limited

    Web Development · iOS App · Web Design

    Wearable Technologies Limited, known as WTL, develops technology for the connected worker within the industrial internet of things.

    Write a review
  5. WFS Technologies Ltd logo

    WFS Technologies Ltd

    Web Development · UI/UX Design · Software Development

    WFS Technologies Ltd develops wireless technology for use underwater, under the name Seatooth.

    Write a review
  6. Wireless Innovation logo

    Wireless Innovation

    Web Development · iOS App · Web Design

    Wireless Innovation supplies data backhaul for remote monitoring and control systems.

    Write a review

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