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BidSonar is an independent index of public-sector opportunities. We aggregate data from official sources and are not affiliated with any procurement body. Data is licensed under the Open Government Licence v3.0 and the EU TED reuse notice.

    ContractsSOC/SIEM Managed Security Service Contract Extension
    Awarded contract

    SOC/SIEM Managed Security Service Contract Extension

    Awarded
    £595.2k
    Published 18 Sept 2026

    Extend SOC/SIEM managed security services for 20 months through May 2028 to maintain alignment with active security licenses.

    🇬🇧United Kingdom· LondonPublished 18 Sept 2026· 5 days agoviaFind a Tender
    Awarded
    £595.2k
    Published 18 Sept 2026

    Decision brief

    4 fields
    • Contract value
      £595,220
      Pounds sterling
    • Closing date
      Rolling
      No closing date published
    • Sector
      IT & Software
      Browse related listings
    • Location
      🇬🇧United Kingdom
      London

    Suppliers

    1 supplier
    • KA
      KROLL ASSOCIATES U.K. LIMITED
    Lead contractor

    Lifecycle

    Awarded

    Contract awarded. Originally published 5 days ago.

    18 September 2026
    Awarded — no open tender advertised

    Brief

    This is a contract extension opportunity for the provision of Security Operations Center (SOC) and Security Information and Event Management (SIEM) managed services. The extension will run for 20 months to align with existing security licenses that remain active until May 2028. The successful service provider will continue to deliver managed security monitoring, threat detection, and incident response services to support the organization's ongoing cybersecurity operations. This is a continuation of existing services rather than a new engagement, making it suitable for the current service provider or qualified alternatives.

    Track record

    3 awards · 3 winners
    Open field

    No single supplier dominates the field.

    In it software, Thameslink Southern Great Northern Limited (TSGN) has awarded 3 contracts to 3 suppliers.

    Who wins here
    1. ICOMERA UK LIMITED1× · 33%
    2. KROLL ASSOCIATES U.K. LIMITED1× · 33%
    3. ACCESS UK LIMITED1× · 33%

    Across it software, the most active winners are SOFTCAT PLC, PHOENIX SOFTWARE LTD, INSIGHT DIRECT UK LIMITED — the field to beat, or your route in as a partner.

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    Take action
    View on sourceFind a Tender

    Award notice and full record on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    find-tender.service.gov.uk
    Record ID
    ocds-h6vhtk-0775ee
    TS
    Buyer
    Thameslink Southern Great Northern Limited (TSGN)
    Sector
    IT & Software