Buyer profile
National Audit Office
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Total contracts
443
Known spend
£222m
418 disclosed
Average value
£530,828
Per contract
Active suppliers
10
Last 5 years
Top suppliers
Last 5 years- 1
KPMG LLP
£14m
- 2
DELOITTE LLP
£18m
- 3
ERNST & YOUNG LLP
£10m
- 4
GRANT THORNTON UK LLP
£7m
- 5
PRICEWATERHOUSECOOPERS LLP
£7m
- 6
Phoenix Software Limited
2 winslatest 20 Aug 2026£6m
- 7
FORVIS MAZARS LLP
£6m
- 8
XMA Ltd
2 winslatest 08 Dec 2025£6m
- 9
Ipsos (Market Research) Limited
2 winslatest 24 Dec 2025£684,809
- 10
Success at School Ltd
2 winslatest 20 May 2026£34,200
What they buy
By CPV categoryBusiness servicesCPV 79
297 contracts · £158m
IT servicesCPV 72
52 contracts · £33m
SoftwareCPV 48
13 contracts · £1m
Financial & insuranceCPV 66
13 contracts · £398,215
Architectural & engineeringCPV 71
8 contracts · £323,260
Education & trainingCPV 80
7 contracts · £911,000
Office & computing equipmentCPV 30
6 contracts · £2m
Radio, TV & telecomsCPV 32
6 contracts · £584,752
Renewal radar
Awarded contracts predicted to come up for re-tender in the next 18 months
- Success at School Apprentice Campaign 2026/2027
Predicted using median duration of UK contracts in the same CPV division (11 months from contract start date → renewal expected by Jun 2027).
Jun 2027
40% confident
- CPT_23_63 Asset Valuation
Predicted using median duration of past contracts from this buyer in the same CPV division (47 months from contract start date → renewal expected by Dec 2027).
Dec 2027
60% confident
Tender activity
Notices published per month — last 24 months
All contracts (443)
NAO case management solution for financial audits
Text to be corrected in the original notice: Instead of: 15.00 on 20/01/21: https://nao.zoom.us/webinar/register/WN_nFYKdfxcShuT7Wep0xLFrg Read: Please note that an amendment has b
GEN_20_22 - financial audit and assurance services
Text to be corrected in the original notice: Place of text to be modified: II.2.14 Instead of: This tender will be divided into lots. More information will be given at supplier day
GEN_20_28 the provision of legal services: constitutional and public law and local public audit law
Legal advice for Constitutional and Public Law and Local Public Audit Law. This tender has been divided into two lots. Lot 1: Constitutional and Public Law Lot 2: Local Public Audi
Trainers & coached faculty framework
Text to be corrected in the original notice: Place of text to be modified: I.1) Instead of: National Audit Office 157-197 Buckingham Palace Road, London, SW1W 9SP, United Kingdom T
Gb-london: GEN_20_15 - road expert
The National Audit Office is looking to obtain the view of an independent expert with civil engineering costing expertise, in respect of the appropriateness of costing rates for di
Gb-london: GEN_20_14 - road network structures engineering expert 2020
The National Audit Office is looking to obtain an independent expert view from an organisation with civil engineering expertise to assist us in evaluating the appropriateness of Hi
Water services regulation authority 2019-21 grant thornton
Outsourced audit of Water Services Regulation Authority 2019-20 and 2020-21; full financial statements audits. Completion of fully ISA compliant audits and provision of shadow audi
Independent office for police conduct 2019-20 and 2020-21 BDO
Completion of a fully ISA compliant audit and provision of a shadow audit opinion of the C&AG on the Independent Office for Police Conduct 2019-20 financial statements and 2020-21
National maritime museum 2019-21 grant thornton
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the NMM 2019-20 financial statements and the NMM 2020-21 financial statements. To
Criminal cases review commission 2019-2021 BDO
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the Criminal Cases Review Commission 2019-20 financial statements and the Criminal
NS&I resource accounts 2019-21
Financial Audit - NS&I Resource Accounts 2018-19 Additional information: Contract extended for 2 years
NS&I consolidated product accounts 2019-21
Audit of NS&I Consolidated Product Accounts 2018/19 Additional information: Contract Extended by one year
Monitoring
Press Office Media Monitoring Contracts
Office of the public guardian 2019-20 BDO
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the Office of the Public Guardian 2019-20 financial statements. To include a regul
Legal services board 2019-21 BDO
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the Legal Services Board 2019-20 financial statements and the Legal Services Board
Office for legal complaints 2019-21 BDO
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the Office for Legal Complaints 2019-20 financial statements and the Office for Le
Office of the information commissioner 2019-20 and 2020-21 BDO
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the Office of the Information Commissioner 2019-20 and 2020-21 financial statement
Financial audit frameworks 2019 bundle 5 museums and galleries
Delivery of the financial statements audits for the 2019-20 and 2020-21 audit cycles for the following bodies: Tate Gallery - British Museum - National Museums Liverpool - The Roya
Centre for environment, fisheries and aquaculture science 2019-21 BDO
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the Centre for Environment, Fisheries and Aquaculture Science 2019-20 and 2020-21
Financial audit frameworks 2019 bundle 7 culture, media and sport
Audit of the financial statements of the following bodies for the 2019-20 and 2020-21 audit cycles: - Arts Council of England (Lottery and grant-in-aid accounts) - British Film Ins