Answer:
Police England/Wales: Constable, Sergeant, Inspector, Chief Inspector, Superintendent, Chief Superintendent, Assistant Chief Constable, Deputy Chief Constable, Chief Constable.

Metropolitan Police: Constable, Sergeant, Inspector, Chief Inspector, Superintendent, Chief Superintendent, Commander, Deputy Assistant Commissioner, Assistant Commissioner, Deputy Commissioner, Commissioner.

City of London Police: Constable, Sergeant, Inspector, Chief Inspector, Superintendent, Chief Superintendent, Commander, Assistant Commissioner, Commissioner.

Note: Assistant Chief Constable/Commander and above are all classed as Chief Officers.

All have the same ranks up to and including Chief Superintendent are the same and all can have Detective in front of them.
First answer by Pixie2097. Last edit by 9818anthony. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 4 [recommend question].