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One or more suppliers on this contract have also made political donations. See supplier details below.
The National Audit Office (NAO) is the UK's independent public spending watchdog. The NAO supports Parliament in holding government to account and helps improve public services through its high-quality audits.
The NAO reprocured the Financial Audit and Assurance Services to support the high-quality delivery our portfolio of financial audits within the public sector.
Financial Audit and Assurance Services Contract
NAO sought to continue working in partnership with supplier firms to deliver high quality audits, which support effective accountability and lead to better financial reporting and financial management by public bodies.
NAO plan to contract out a series of audit engagements through a lot based structure. The Financial Audit and Assurance Services Contract will also include provision for the opportunity to procure additional financial audit related services throughout the lifetime of the contract.
For audit engagements under the contract, the Comptroller and Auditor General (C&AG) will retain overall responsibility for signing the audit opinion and the NAO will work with supplier firms to ensure audit and assurance services are carried out in line with the relevant standards and quality expectations.
Audits will need to be carried out to internationally recognised auditing standards but also adapted to the public sector reporting framework, which includes the Government Financial Reporting Manual, and checking that transactions have been applied to the purposes intended by Parliament and conform to the authorities which govern them ('regularity').
The National Audit Office (NAO) will be awarding Financial Audit and Assurance Services contracts across a number of lots. Under the Financial Audit and Assurance Services contract Partner Firms will deliver audit services for a defined portfolio of audited entities. The contracts will be awarded to experienced Partner Firms who have a proven record of delivering ISA (International Standards on Auditing) compliant audits.
The new Financial Audit and Assurance Services contract will cover the provision of audit services from the 2026-27 audit cycle (year ended 31 March 2027 (unless specified otherwise)). The Financial Audit and Assurance Services Contract will initially cover 3 audit cycles from 2026-27 to 2028-29 with the option to extend for a further 2 audit cycles up to 2030-31. All audits within the lots have a 31 March year end, unless specified otherwise.
NAO sought Partner Firms to provide audit services under the following 14 lots:
Interested suppliers were able to submit a bid for the lots of their choice (maximum of 8 lots). This means if a single supplier bids for the maximum 8 lots and is the preferred supplier based on the award and price evaluation on all 8 lots; they would be awarded all 8 lots that they have bid for. However suppliers were not be permitted to submit bids for more than 8 lots.
The new contract will run for an initial period of 3 years from Tuesday 1st September 2026 until Friday 31st August 2029 with the option to further extend for a period of up to 2 years (by 2 periods of 12 months) until Sunday 31st August 2031 with the estimated overall value of the contract being up to £68,205m inclusive of VAT (£13,641m per annum). No guarantee is given as to the actual value of the contract.
This figure includes an element of contingency and assumptions over additional services that may be procured in addition to contracted-out audit engagements as set out in Appendix A - Statement of Requirement.
| Supplier | Identifier | Award Value | Lots Won | Cross-References |
|---|---|---|---|---|
| DELOITTE LLP | OC303675 | £14,732,704 | 2 lots Lot 7 · Lot 14 | DONOR£617K across 13 donations To: Labour Party, Conservative and Unionist Party, Liberal Democrats MP LINK |
| ERNST & YOUNG LLP | OC300001 | £8,012,107 | 3 lots Lot 2 · Lot 6 · Lot 13 | DONOR£493K across 25 donations To: Labour Party, Conservative and Unionist Party LOBBYIST FGS Global (UK) Limited (11 quarters) Bradshaw Advisory Ltd (3 quarters) Policy Connect Limited (1 quarter) |
| FORVIS MAZARS LLP | OC308299 | £5,209,110 | 1 lot Lot 1 | - |
| GRANT THORNTON UK LLP | OC307742 | £7,948,205 | 2 lots Lot 5 · Lot 11 | DONOR£97K across 14 donations To: Labour Party, Conservative and Unionist Party |
| KPMG LLP | OC301540 | £13,833,465 | 3 lots Lot 3 · Lot 4 · Lot 12 | DONOR£1.98M across 117 donations To: Conservative and Unionist Party, Labour Party, Liberal Democrats FORMER MP Mr Charles Clarke— Employment and earnings (former) Sir Oliver Letwin— Donations and other support (including loans) for activities as an MP (former) Mr Stephen Dorrell— Employment and earnings (former) |
| PRICEWATERHOUSECOOPERS LLP | OC303525 | £7,175,463 | 3 lots Lot 8 · Lot 9 · Lot 10 | DONOR£3.38M across 100 donations To: Labour Party, Liberal Democrats, Conservative and Unionist Party +7 more MP LINK |
Taken from this notice, not from Companies House. Check the original notice — details change and are not updated here.
This procurement was divided into 14 lots, each awarded separately.
| Lot | Value | Awarded To | Status |
|---|---|---|---|
| Lot 1 | £5,209,110 initial term | active | |
| Lot 2 | £2,786,599 initial term | active | |
| Lot 3 | £5,795,566 initial term | active | |
| Lot 4 | £3,949,954 initial term | active | |
| Lot 5 | £3,015,074 initial term | active | |
| Lot 6 | £2,252,793 initial term | active | |
| Lot 7 | £9,078,377 initial term | active | |
| Lot 8 | £2,759,794 initial term | active | |
| Lot 9 | £2,621,804 initial term | active | |
| Lot 10 | £1,793,866 initial term | active | |
| Lot 11 | £4,933,131 initial term | active | |
| Lot 12 | £4,087,944 initial term | active | |
| Lot 13 | £2,972,715 initial term | active | |
| Lot 14 | £5,654,327 initial term | active |
Government spending data: These suppliers have received £4,560,599,665 in 39,489 payments (over £25k) from Home Office, Department of Health and Social Care, Department for Transport, Ministry of Defence, HMRC and 112 more public bodies (2010-04-01 to 2026-08-27).