Softcat
CC
Rightmove
KB
Vantage Data Centers UK
SS
HI
IL
WI
SC

Updated 29 October 2026 · from filed accounts

The biggest software and tech companies in South East

Softcat is the biggest company among the software and tech companies registered in South East by turnover, with £1.46bn in its latest filed accounts. Corsair Components and Rightmove follow. Together the 10 companies below turned over £3.64bn in their latest filed years.

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  1. 1
    Softcat

    Marlow · Software & tech · FY to Jul 2025

    £1.46bn

    +52% on the year before

  2. 2
    Corsair Components

    Wokingham · Software & tech · FY to Dec 2025

    £592m

    +115% on the year before

  3. 3
    Rightmove

    Milton Keynes · Software & tech · FY to Dec 2025

    £425m

    +9.0% on the year before

  4. 4
    Kellogg Brown & Root

    Leatherhead · Software & tech · FY to Dec 2024

    £361m

    +23% on the year before

  5. 5
    Vantage Data Centers UK

    Newbury · Software & tech · FY to Dec 2025

    £196m

    +27% on the year before

  6. 6
    Sas Software

    Marlow · Software & tech · FY to Dec 2025

    £186m

    +10% on the year before

  7. 7
    Hiperdist

    Camberley · Software & tech · FY to Dec 2025

    £122m

    +19% on the year before

  8. 8
    Iqvia Laboratories Discovery UK

    Reading · Software & tech · FY to Dec 2025

    £105m

    -1.6% on the year before

  9. 9
    Wirehive

    Farnborough · Software & tech · FY to Dec 2024

    £100m

    +44% on the year before

  10. 10
    Shi Corporation UK

    Milton Keynes · Software & tech · FY to Dec 2025

    £95.8m

    +34% on the year before

How this list is made

From each company's latest accounts filed at Companies House, or its annual report for listed groups: the figures as filed, nothing estimated. Changes compare the two latest filed years. Only companies that report in pounds are ranked; groups that report in dollars or euros aren't converted. Subsidiaries whose figures are part of a listed group's are counted once, in the group. Updated daily as new accounts are filed.

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