Assistant Commissioner of Police of the Metropolis

Assistant Commissioner of Police of the Metropolis, usually just Assistant Commissioner (AC), (Equivalent to Chief Constable) is the third highest rank in London's Metropolitan Police, ranking below Deputy Commissioner and above Deputy Assistant Commissioner.There are usually four officers in the rank. However, currently there are five due to the secondment of Assistant Commissioner Rob Beckley to Operation Resolve, the criminal investigation into the Hillsborough Disaster. There have also at times been five in the past.

From 1 September 2016 the salary is £188,823 (+ £2,373 Allowance). This does not include use of private car and pension contributions. This makes them the equal fifth highest paid police officers in the United Kingdom, behind the Commissioner, the Deputy Commissioner, the Chief Constable of Police Scotland, and the Chief Constable of the Police Service of Northern Ireland, and alongside the Chief Constables of Greater Manchester and the West Midlands.

The rank of Assistant Commissioner was introduced by the Police Act 1856, which abolished the two Joint Commissioners and established a single Commissioner (Sir Richard Mayne) assisted by two Assistant Commissioners. The Assistant Commissioner (Administrative) was in charge of administration and discipline. The Assistant Commissioner (Executive) was in charge of executive business, supplies and buildings. The first two men to fill these posts were Lieutenant-Colonel Douglas Labalmondière and Captain William C. Harris respectively.

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