All police forces in the UK (with the exception of the Metropolitan Police Service), use the Constable to Chief Constable ranking structure.
The letter P indicates a uniformed police officer, whereas, the letter D indicates a detective.
The current ranks used by UK police forces are as follows:
- Constable (PC / DC)
- Sergeant (PS / DS)
- Inspector (Insp / DI)
- Chief Inspector (CI / DCI)
- Superintendent (Supt / DSU)
- Chief Superintendent (CS / DCS)
- Assistant Chief Constable (ACC)
- Deputy Chief Constable (DCC)
- Chief Constable (CC)