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    ContractsCost Assessment Advisors for Offshore Transmission Owner Tender and Policy Support
    Awarded contract

    Cost Assessment Advisors for Offshore Transmission Owner Tender and Policy Support

    Awarded
    £1.7m
    Published 24 Jul 2026

    Ofgem is seeking Cost Assessment advisors to evaluate tender submissions and assess transmission asset costs for upcoming Offshore Transmission Owner (OFTO) tender rounds.

    🇬🇧United Kingdom· LondonPublished 24 Jul 2026· 3 months agoviaFind a Tender
    Awarded
    £1.7m
    Published 24 Jul 2026

    Decision brief

    4 fields
    • Contract value
      £1,666,000
      Pounds sterling
    • Closing date
      Not published
      No closing date published
    • Sector
      Financial Services
      Browse related listings
    • Location
      🇬🇧United Kingdom
      London

    Suppliers

    1 supplier
    • GT
      GRANT THORNTON UK ADVISORY TAX LLP
    Lead contractor

    Lifecycle

    Awarded

    Contract awarded. Originally published 3 months ago.

    24 July 2026
    Awarded — no open tender advertised

    Brief

    Ofgem seeks Cost Assessment advisors to support the Offshore Transmission Owners (OFTO) team in executing regulatory duties and managing tender processes for offshore transmission projects. These services are essential for running effective tender rounds under the Tender Regulations 2015. The advisor will provide consultancy support across multiple areas including evaluation of bidder submissions, financial assessment, and cost review of OFTO assets. The role requires careful evaluation of developer-submitted data to ensure transmission assets are transferred economically and efficiently, that stated costs fairly reflect asset value, and that consumers receive value for money. This is a critical function that enables Ofgem to conduct robust tender evaluation processes and successfully appoint OFTOs for upcoming offshore transmission projects.

    Track record

    4 awards · 4 winners
    Open field

    No single supplier dominates the field.

    In financial services, OFGEM has awarded 4 contracts to 4 suppliers.

    Who wins here
    1. CEPA LLP1× · 25%
    2. University of Strathclyde1× · 25%
    3. GRANT THORNTON UK ADVISORY TAX LLP1× · 25%
    4. ARTHUR J GALLAGHER INSURANCE BROKERS LTD1× · 25%

    Across financial services, the most active winners are ARTHUR J GALLAGHER INSURANCE BROKERS LTD, ALLPAY LTD, ECCLESIASTICAL INSURANCE OFFICE PUBLIC LIMITED COMPANY — 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-0689c7

    Your fit

    Could you win the next one?

    This went to GRANT THORNTON UK ADVISORY TAX LLP. Sonar reads OFGEM's work like this against your business — who holds it, and whether you could compete or partner next time.

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    OF
    Buyer
    OFGEM
    Sector
    Financial Services