POLSA – Police Search Adviser.
SIO – Senior Investigating Officer. Usually a Detective Chief Inspector who is in overall charge of the investigation of a major crime such as murder, kidnap or rape.
Chart of Police Ranks
Police ranks are consistent across all disciplines and the addition of prefixes such as ‘detective’ (e.g. detective constable) does not affect seniority relative to others of the same rank (e.g. police constable).
