Sub-inspector

Sub-inspector is a rank used extensively in the Indian Police, Pakistani Police and Sri Lankan Police, which is primarily based on the British model. It was formerly used in most British colonial police forces and in certain British police forces as well. The Rank usually was in charge of a police substation or assisted an inspector.

The rank of sub-inspector was introduced into the Metropolitan Police in the late 19th century. It did not last long, being effectively replaced by station sergeant in 1890. Officers who already held the rank retained it, and were promoted to inspector as soon as a vacancy arose.

Sub-inspector was introduced into the RCMP from 1942–1960 with the insignia of one star, similar to an Army second lieutenant.

The rank of sub inspector was replaced after the Rhodesian Unilateral Declaration of Independence with three grades of Patrol Officer, Senior Patrol Officer and Section Officer with one, two, and three gold coloured bars respectively.

A sub-inspector (SI) is generally in command of few police personnel (with head constables, the equivalent of corporals, commanding police outposts). He is the lowest ranked officer who under Indian Police rules and regulations can file a charge sheet in court, and is usually the first investigating officer. Officers subordinate to him cannot file charge sheets, but can only investigate cases on his behalf. He can be the station house officer in some of the states like kerala.

A sub-inspector ranks above an assistant sub-inspector of police (ASI) and below an inspector (who usually supervises a group of police stations). Most sub-inspectors are directly recruited into the police and have better educational qualifications than lower-ranking police officers. In busy police stations there are also additional sub-inspectors (Addl. SI), who are generally officers who have come up through the ranks. In this case, the directly recruited sub-inspector in charge is referred to as the principal sub-inspector.

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