IT Service Companies · United Kingdom

4 Best IT Service Companies in the United Kingdom (Updated 2026)

4 it service companies with reviews, ranked by rating and number of reviews.

  1. #1
    Aonix Limited

    IT Service Company · Macclesfield, United Kingdom

    5.0 1 review

    Making Powerful Connections since 1982, powering business and digital transformations, performing creative marketing programmes, managing dependable IT, telecoms and network connectivity that enables secure smarter working for individuals a…

    Services
    • Brand Management
    • Campaign Management
    • Cloud Service Management
    • Compliance Audits
    • Consultancy Services
    • +18 more
    Highlights
    • Wheelchair accessible parking
    • Wheelchair accessible entrance
    • Wheelchair accessible seating
    • Wheelchair accessible restroom
    • Restroom unisex
    • +5 more
  2. #2
    B&B Information Technologies Services ltd.

    IT Service Company · London, United Kingdom

    No reviews yet

    Microsoft Technologies Consultancy Microsoft Dynamics 365 Product Support & Delivery through Microsoft Certified Consultants Software or Application development by Computer Engineers

    Services
    • Backup And Recovery
    • Continuing Support
    • Data Migration
    • Database Backup And Recovery
    • Design & Architecture
    • +12 more
  3. #3
    Flamble Ltd

    Software Company · Gerrards Cross, United Kingdom

    No reviews yet
    Highlights
    • Wheelchair accessible parking
  4. #4
    CMS Software Ltd

    IT Service Company · Upminster, United Kingdom

    3.5 2 reviews
    Services
    • Accounts Software
    • Archiving Solution
    • Content Filtering
    • Cyber Security
    • Data Capture
    • +29 more
    Highlights
    • Offers online appointments
    • Onsite services
    • Wheelchair accessible parking

About it service companies in the United Kingdom

Which it service companies in the United Kingdom have the best ratings?

Ranked by rating and number of reviews: Aonix Limited (5.0★, 1 reviews), B&B Information Technologies Services ltd. (0.0★, 0 reviews), Flamble Ltd (0.0★, 0 reviews).

Which it service companies in the United Kingdom have the most reviews?

By number of reviews: CMS Software Ltd (3.5★, 2 reviews), Aonix Limited (5.0★, 1 reviews).

How is this ranking made?

Each business is ranked by its rating across all its reviews, weighted by how many reviews it has, so a handful of five-star reviews cannot outrank thousands. It is recalculated as reviews come in — last checked October 2026.