Award

CPT_24_52 Specialist model assurance support

NATIONAL AUDIT OFFICE

This public procurement record has 3 releases in its history.

AwardUpdate

09 Mar 2026 at 09:40

Award Notice
Award

20 Mar 2025 at 09:36

Award Notice
Tender

15 Jan 2025 at 10:06

Tender Notice
Summary of the contracting process

The National Audit Office (NAO) has successfully awarded a contract titled "CPT_24_52 Specialist Model Assurance Support" to Hartley McMaster Limited, reflecting the completion of the awarding stage of the procurement process. This contract, within the System Quality Assurance Assessment and Review Services industry, is primarily aimed at enhancing the NAO's model assurance portfolio through validation, verification, and testing of models. The procurement process was conducted as an open procedure, adhering to the below-threshold procurement method. The contract commenced on 1st April 2025, with an initial term ending on 31st March 2026, and includes potential extensions up to 2028. The procurement took place entirely within the United Kingdom, showcasing the NAO's commitment to bolstering service quality in public expenditure audits. The total varied contract value is now £166,908.60 including VAT.

This contract provides substantial growth opportunities for small and medium-sized enterprises (SMEs) and voluntary, community, and social enterprises (VCSEs), as the NAO particularly encourages participation from these sectors. Businesses centred on quality assurance, auditing services, and those with a robust capacity for model validation and verification will find this contract particularly suited to their capabilities. By overseeing and advancing the NAO's model assurance procedures, successful suppliers can not only fortify their reputation in public sector services but also leverage this experience to secure future contracts within the realm of quality assurance and auditing services.

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Notice Information

Notice Title

CPT_24_52 Specialist model assurance support

Notice Description

The National Audit Office (NAO) awarded a contract to Hartley McMaster Limited who will oversee and lead the testing of a subset of models with the NAO model assurance portfolio by * validation, verification and testing models and reconciling the model design back to the intended methodology. * overseeing a small portfolio of model assurance work to ensure that outputs are successfully delivered across the NAO modelling portfolio. * supporting the NAO to continuously improve our approach to implementing testing procedures The contract is expected to commence on Tuesday 1st April 2025 and run for an initial period of 12 months until Tuesday 31st March 2026. The contract may be extended by 2, 12 months until Friday 31st March 2028 at the NAO's discretion. The estimated contract value will be PS111,272.40 inclusive of VAT over the 3 years duration. As of 1st April 2026, The current contract will also be extended for a further 12 months, from Wednesday 1 April 2026 to Wednesday 31 March 2027. Also the original contract value of PS111,272.40 inclusive of VAT has been varied up to 50% and the new value is PS166,908.60 inclusive of VAT.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-b5fd17-87bd1199-5ba8-49a7-a8f0-e1658011fe90
Publication Source
Contracts Finder
Latest Notice
https://www.contractsfinder.service.gov.uk/Notice/98444b10-b3fc-4053-b74a-c6612a686993
Current Stage
Award
All Stages
Tender, Award

Procurement Classification

Notice Type
Award Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Open
Procurement Method Details
Open procedure (below threshold)
Tender Suitability
SME, VCSE
Awardee Scale
SME

Common Procurement Vocabulary (CPV)

CPV Divisions

72 - IT services: consulting, software development, Internet and support

79 - Business services: law, marketing, consulting, recruitment, printing and security

CPV Codes

72225000 - System quality assurance assessment and review services

79212000 - Auditing services

Notice Value(s)

Tender Value
£166,908 £100K-£500K
Lots Value
Not specified
Awards Value
£166,908 £100K-£500K
Contracts Value
Not specified

Notice Dates

Publication Date
9 Mar 20261 months ago
Submission Deadline
10 Feb 2025Expired
Future Notice Date
Not specified
Award Date
6 Mar 20251 years ago
Contract Period
31 Mar 2025 - 31 Mar 2028 3-4 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Not Specified
Awards Status
Active
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
NATIONAL AUDIT OFFICE
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
SW1W 9SP
Post Town
South West London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI35 Westminster and City of London
Delivery Location
Not specified
Local Authority
Westminster
Electoral Ward
Pimlico North
Westminster Constituency
Cities of London and Westminster

Supplier Information

Number of Suppliers
1
Supplier Name

HARTLEY MCMASTER

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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