United Kingdom National Audit Office

United Kingdom National Audit Office
Name	National Audit Office
Formation	1983
Founder	Parliament of the United Kingdom
Predecessor	Department of the Comptroller and Auditor General
Type	Parliamentary body
Headquarters	Westminster
Location	London
Leader title	Comptroller and Auditor General
Leader name	Gareth Davies
Parent organization	House of Commons of the United Kingdom

United Kingdom National Audit Office is the supreme public sector audit institution established to support the financial accountability of HM Treasury, Department for Work and Pensions, Ministry of Defence and other major public bodies through independent audit and value-for-money reports. It operates under the aegis of the Comptroller and Auditor General (United Kingdom), reporting directly to the House of Commons of the United Kingdom and interacting with select committees such as the Public Accounts Committee, the Committee of Public Accounts (UK), and parliamentary commissioners including the Parliamentary Commissioner for Administration. The office conducts performance audits across entities including NHS England, HM Revenue and Customs, Department for Education (UK), and Transport for London, informing inquiries into programmes like the Universal Credit (Great Britain), the COVID-19 pandemic in the United Kingdom response, and defence procurement such as the F-35 Lightning II acquisition.

History

The institution traces its roots to the Comptroller of the Exchequer and the Exchequer and Audit Department Act 1866 lineage encompassing earlier offices like the Exchequer (Royal), the Board of Audit (Japan)—as comparative precedent—and the modernisation driven by inquiries such as the Franks Committee. Created by statute during the government of Margaret Thatcher and succeeding the Exchequer and Audit Department, it was reconstituted to enhance independence following debates in the Woolf Report era and reforms influenced by practices in the United States Government Accountability Office and the Cour des comptes (France). Significant historical milestones include its role in scrutinising scandals and episodes involving British Rail privatisation, the Iraq War logistics, the Northern Rock crisis, and the financial implications of policies under administrations of Tony Blair, Gordon Brown, David Cameron, and Theresa May.

Role and functions

The NAO provides statutory financial audit services to the Comptroller and Auditor General (United Kingdom), delivering reports to the House of Commons of the United Kingdom, and offering evidence to committees like the Public Accounts Committee and the Treasury Committee (UK). Its remit includes auditing accounts for entities such as National Health Service (England), BBC, and Crown Prosecution Service, assessing value for money in programmes including High Speed 2, Crossrail, and major defence projects like Queen Elizabeth-class aircraft carrier. The office issues guidance and methodologies aligned with international standards such as those promulgated by the International Organisation of Supreme Audit Institutions and liaises with counterparts including the Australian National Audit Office, the Canadian Audit and Accountability Foundation, and the European Court of Auditors.

Governance and leadership

Governance is vested in the Comptroller and Auditor General (United Kingdom), an officer appointed by the Crown (United Kingdom) on the recommendation of House of Commons of the United Kingdom members, supported by a board drawn from public administration figures and external appointees from institutions such as the Institute for Government, the Chartered Institute of Public Finance and Accountancy, and academic bodies like London School of Economics. Past holders have engaged with political actors including Chancellor of the Exchequer (United Kingdom), Prime Minister of the United Kingdom, and parliamentary select committees such as the Public Accounts Committee chaired historically by figures like Meg Hillier and Margaret Hodge.

Structure and regional offices

Operational structure is divided into directorates covering sectors such as Health and Social Care, Defence, Transport (United Kingdom), and Welfare Reform, with specialist teams for financial audit, value-for-money studies, and technical standards drawn from institutions like the Chartered Institute of Public Finance and Accountancy and academia including University College London. The NAO maintains regional presence to liaise with devolved administrations including Scottish Government, Welsh Government, and Northern Ireland Executive, and works with local audit bodies such as Audit Scotland and the Northern Ireland Audit Office. It conducts fieldwork at sites ranging from Port of Felixstowe operations to Alder Hey Children's Hospital projects and offices in major centres across England, Scotland, Wales, and Northern Ireland.

Audit powers and methodology

Statutory audit powers derive from acts of Parliament and the authority of the Comptroller and Auditor General (United Kingdom), enabling examination of accounts, financial statements, and value-for-money across public bodies like HM Revenue and Customs, Ministry of Defence, and Department for Education (UK). Methodologies combine financial audit techniques drawn from International Organisation of Supreme Audit Institutions standards, forensic accounting approaches used by firms such as KPMG, Deloitte, PricewaterhouseCoopers, and Ernst & Young, and programme evaluation methods influenced by the National Audit Office (United Kingdom)’s own frameworks and academic research from institutions like Oxford University and Cambridge University. Powers include access to documents, interview of officials, and reporting to committees such as the Public Accounts Committee to prompt remedial action by departmental accounting officers, permanent secretaries, and ministers including the Secretary of State for Health and Social Care, Secretary of State for Defence, and the Chancellor of the Exchequer (United Kingdom).

Major reports and impact

Notable reports have covered expenditure in the Iraq War, pandemic procurement during the COVID-19 pandemic in the United Kingdom, the collapse of Carillion, the Northern Rock bailout, and infrastructure projects such as Crossrail and HS2. These reports informed parliamentary inquiries by the Public Accounts Committee, led to recommendations to bodies including Companies House, influenced policy positions of prime ministers from Gordon Brown to Boris Johnson, and spurred reforms in procurement, sponsorship, and risk management within NHS England, Ministry of Defence, and central departments like HM Treasury. The NAO’s work has been cited in debates at Westminster Hall, used by advocacy groups including Taxpayers' Alliance and referenced in academic studies at institutions such as London School of Economics and King's College London.

Criticism and controversies

Critics including journalists at The Guardian, The Times, and commentators in The Telegraph have argued that reports sometimes lack timeliness or fail to effect rapid remedial action, prompting debate with bodies like the Public Accounts Committee and commentators from think tanks such as the Institute for Fiscal Studies and the Institute for Government. Controversies have arisen over audits of programmes like Universal Credit (Great Britain), procurement during the COVID-19 pandemic in the United Kingdom, and the handling of corporate collapses such as Carillion, with scrutiny from legal bodies like the National Audit Office (United Kingdom)’s critics and responses involving the Comptroller and Auditor General (United Kingdom), parliamentary debates in the House of Commons of the United Kingdom, and media coverage by broadcasters including the BBC and Sky News.

Category:Public bodies and task forces of the United Kingdom