The NAO studies and audits of financial statements and documentary evidence in the public domain, to highlight the many challenges to an efficient system. Major changes are being made to the criminal justice system at the same time as significant reductions in resources. At the end of March 2013, for example, the number of police officers was some 127,000, or 10 per cent lower than three years earlier other statistics from the The National Audit Office……..

The number of crimes estimated in the Crime Survey for England and Wales, year June 2013. 8 million

£17.1 billion
funding of the criminal justice system by central government.

£24 billion
Estimate of the social and economic cost of organised crime to the UK annually

The National Audit Office (NAO) scrutinises public spending on behalf of Parliament.

NAO audits central government. By reporting the results of the audits to Parliament, the hold government departments and bodies are held to account for the way they use public money, thereby safeguarding the interests of taxpayers. In addition, the work aims to help public service managers.
The Comptroller and Auditor General, Amyas Morse, is an Officer of the House of Commons. His staff at the NAO (numbering about 860) are independent of government, are not civil servants and do not report to any Minister.
The NAO does not audit local government spending, publish statistical information or audit the spending of the devolved governments in the rest of the UK.
UK Statistics come from see the Office for National Statistics,
while Local Government spending comes from the: Audit Commission
but in August 2010, the government announced its intention to abolish the Audit Commission, local government spending will be subject to Parliamentary legislation in future it was determined. The types of policy which on which reports are made include Citizens & services,Children and families,Civil society and commissioning
Culture, Media and Leisure,Education and skills,Employment, jobs and careers
Health and social care.

So any type of policy seems to be monitored in this fashion?