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    ContractsModel Assurance Testing Support
    Awarded contract

    Model Assurance Testing Support

    Awarded
    £336k
    Published 26 Aug 2026

    Hartley McMaster Limited will provide specialist model assurance and testing support to the National Audit Office from January 2027 for three years, with a potential one-year extension, valued at £336,000 including VAT.

    🇬🇧United KingdomPublished 26 Aug 2026· 5 days agoviaContracts Finder
    Awarded
    £336k
    Published 26 Aug 2026

    Decision brief

    4 fields
    • Contract value
      £336,000
      Pounds sterling
    • Tender closed
      1 Jun 2026
      3 months ago
    • Sector
      Professional Services
      Browse related listings
    • Location
      🇬🇧United Kingdom

    Suppliers

    1 supplier
    • HM
      HARTLEY MCMASTER LIMITED
    Lead contractor

    Lifecycle

    Awarded

    Contract awarded. Originally published 5 days ago.

    26 Aug 2026Today1 Jun 2026

    Brief

    The National Audit Office (NAO) has awarded a contract to Hartley McMaster Limited through the Crown Commercial Services GCloud 14 framework to provide specialist model assurance support services. The supplier will oversee and lead comprehensive testing of a subset of models within the NAO's model assurance portfolio. The initial contract term runs from 4 January 2027 to 3 January 2030 (three years), with an option for the NAO to extend for an additional 12 months until 3 January 2031. The total estimated contract value is £336,000 inclusive of VAT over the full four-year period. This role requires expertise in model testing, quality assurance, and portfolio management to support the NAO's critical audit functions.

    Track record

    26 awards · 24 winners
    Open field

    No single supplier dominates the field.

    In professional services, NATIONAL AUDIT OFFICE has awarded 26 contracts to 24 suppliers.

    Who wins here
    1. MONTAGU EVANS LLP2× · 8%
    2. ERNST YOUNG LLP2× · 8%
    3. REDACTIVE EVENTS LIMITED1× · 4%
    4. FORFRONT LIMITED1× · 4%
    5. TopScore Technologies Limited1× · 4%
    6. HARTLEY MCMASTER LIMITED1× · 4%

    +18 more suppliers

    Across professional services, the most active winners are REED SPECIALIST RECRUITMENT LIMITED, KPMG LLP, Hays Specialist Recruitment Ltd — the field to beat, or your route in as a partner.

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    Take action
    View on sourceContracts Finder

    Award notice and full record on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    contractsfinder.service.gov.uk
    Record ID
    ac06dc1e-2908-4a2f-8b6b-286917e5d412-912158
    NA
    Buyer
    NATIONAL AUDIT OFFICE
    Sector
    Professional Services