Criminal Investigation Department

Criminal Investigation Department

The Criminal Investigation Department (CID) is the branch of all Territorial police forces within the British Police and many other Commonwealth police forces, to which plain clothes detectives belong. It is thus distinct from the Uniformed Branch and the Special Branch.

Sri Lanka

The Criminal Investigation Department of the Sri Lanka Police Service is responsible for carried out investigations into crimes, including murders and organized crime. It was established in 1870.

United Kingdom

The Metropolitan Police Service CID, the first such organisation, was set up on 7 April 1878 by C. E. Howard Vincent. Originally, it was under the direct command of the Home Secretary, but since 1888 has been under the authority of the Commissioner.

CID officers are required to have had at least two years as a uniformed officer before applying to transfer to the branch and receive further training when they do so. While training they are referred to as a Training Detective Constable (TDC) and after a years training period they become a fully fledged Detective Constable (DC). CID officers are involved in investigation of major crimes such as rape, murder, serious assault, fraud, and any other offences that require complex detection They are responsible for acting upon Criminal investigation received and then building a case, from analysis of the initial incident through to arrest and prosecution of any suspects.

In the United Kingdom, smaller police stations usually have more uniformed officers than CID officers. Usually having five Detective Constables (DC) with a Detective Sergeant (DS) in overall command, but in larger stations usually many DCs DSs and Detective Inspectors will be present with the overall command of the department the responsibility of the Detective Chief Inspector


  • The unrelenting investigation of criminals
  • Securing convictions for criminals
  • Aftercare of witnesses


Contrary to practice in police forces of many other nations, detectives are not automatically senior to uniformed officers and hold the same ranks. The head of the CID in most police forces is a Detective Chief Superintendent.

These ranks are common to most forces.

Special Investigations Branch

Although the British Armed Forces Military Police have an investigations department, it is not called "CID". All three service police forces operate Special Investigation Branches (SIB) which fulfill much the same role as the civilian CID.

The Army SIB has regular Sections and one Territorial Army Section made up of civilian CID officers and ex-regulars to assist them in major cases.

See also

External links


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