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)
Gb-london: workplace enviornmental monitoring
On site environmental checks to cover legionella risk assessments, air monitoring checks as documented in the specification, water checks as documented in the specification, carry
Gb-london: gen_ 19_11 railway network depreciation replacement cost 2019
The NAO would like to engage a suitably experienced supplier to provide expert rail engineering / construction assessments for a specific rail related audit. For more detailed info
Perimeter security at BPR
Architectural Works to enable Perimeter Security at BPR
Netbackup support contract
Upgrades, security patches and support for the NAO back up software
Gb-london: workplace enviornmental monitoring
On site environmental checks to cover legionella risk assessments, air monitoring checks as documented in the specification, water checks as documented in the specification, carry
Gb-london: digital printing service
The requirement is for operational digital printing services off-site. The NAO is seeking to appoint a supplier of digital printing services for printing of a range of (but not lim
Financial audit: central review of GAD 2018-19
Financial Audit - provision of assurance that GAD has the professional skills and expertise to provide the actuarial services relating to IAS 19 accounting valuations to our client
UK asset resolution 2018-19
Engagement of GT to act as an auditor's expert to provide assurance on the valuation of the B&B and NRAM defined benefit pension schemes. The schemes are due a triennial valuation
Data lake design and build
Consultancy, build and ongoing consultancy support for a Data Lake for the Dart team. Ongoing advice and consultancy on similar Cloud based storage
DWP FAS provision 18-19
Specified procedures (ISA compliant) to be agreed as per scoping document re cash flow model prepared by PPF which underpins the Financial Assistance Scheme (FAS) provision in the
Pensions (risk assessment) training - 2018-19
Design and delivery of training to support the risk assessment phase of the audit of IAS19 defined benefit pension obligations. To include: an introductory session for those new to
Royal mint trading fund 2018-19
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the Royal Mint Trading Fund 2018-19 financial statements. To include a regularity
Ofqual 18-19-20-21
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the Office of Qualifications and Examinations 2018-19, 2019-20 and 2020-21 financi
Forestry group - 18-2
To provide the audit work to support our audit opinions on Forestry Commission (England and Central Services), Forest Enterprise England and Forest Research.
IT audit training 2018-19
The NAO undertakes to provide opportunity for its existing and future IT auditors to receive training on IT audit to ensure knowledge is maintained and current best practices are u
National museum of the royal navy 2018-19
Completion of a fully ISA compliant audit and provision of a shadow audit opinion for the C&AG on the National Museum of the Royal Navy 2018-19 financial statements. To include a r
Scotland office accounts 2018-19
Audit of the Scotland Office Resource Accounts and Scotland Combined NLF account.
Northern ireland office (and arms length bodies) 2018-19
Audit of the Northern Ireland Office (including arms length body) accounts.
SAP S4/Hana and sod training 2018-19
NAO engages KPMG as SAP experts to provide training, guidance and advice for enterprise level ERR systems where we do not possess that skill in-house and seek to build capability.
NHS litigation authority 2018-19
Provision of specialist actuarial expertise - to perform review of the methodology and assumptions used by the Government Actuary's Department (GAD) to calculate the NHS Litigation