To 1850 Traditionally the responsibility for policing in the city had been divided between day and night City
Watch, primarily under the two
sheriffs. Their responsibilities were shared with the
aldermen's officers – the ward
beadles – who are now purely ceremonial. It was these officers' responsibility for ensuring that the Night Watch was maintained. Policing during the day eventually came under the
City Patrol, which evolved into the
City Day Police, which was modelled on the
Metropolitan Police. The
London City Police was officially formed in 1832, before becoming the City of London Police with the passing of the
City of London Police Act 1839, which gave statutory approval to the force as an independent police body and headed off attempts made to merge it with the Metropolitan Police. It moved its headquarters from the corporation's Guildhall to 26
Old Jewry in 1840. The force has had special constables since at least 1911, when 1,648 were called for duty during docks strikes. There was one day in 1918, when the only warranted officer within the city of London was a special constable. Several regular officers of the force were killed in
Nazi German air raids over London in 1941 and 1942. File:London 1908 CityofLondonPolice.jpg|The gold medal-winning City of London Police team at the
1908 Summer Olympics File:Sergeants Tucker and Bentley and PC Choate.jpg|Sergeants Tucker and Bentley and Constable Choate, murdered while on duty on 16 December 1910
1990–2001 The early 1990s saw the
IRA carry out a number of high-profile attacks in the city as part of
the Troubles, such as the 1992
Baltic Exchange bombing and the
1993 Bishopsgate bombing, resulting in huge economic and infrastructural damage. As a result, the
Traffic and Environmental Zone, better known as the "ring of steel", was officially established in 1993 by Owen Kelly, the then City of London Police commissioner. Commander
Hugh Moore suffered a fatal heart failure in 1993 following a violent arrest. Some aspects of the ring of steel were 'stepped down' in the late 1990s following the cessation of IRA hostilities, but stepped up again after the
September 11 attacks. The force's headquarters relocated to
Wood Street in 2001. 2002 saw the most recent City officer to die in the line of duty. In 2014, the force was chosen to be the lead force for fraud, overseen by the
National Crime Agency, to operate the
National Fraud Intelligence Bureau (NFIB) and cybercrime reporting centre. This includes the 'Report Fraud' (formerly 'Action Fraud') service for gathering and analysing reports of fraud and financially motivated cyber crime reported by the public. In 2015, the City of London Police mounted unit also escorted the
exhumed remains of King Richard III through the
city of Leicester from
St Nicholas Church to
Leicester Cathedral, en route to their reburial. ==List of commissioners==