In December 1910, the murder of three City of London Police officers and the wounding of two others was, and continues to be, one of the largest multiple murders of police officers on duty carried out in Great Britain. The three officers – Sergeants Bentley and Tucker and Constable Choat - were shot dead whilst trying to prevent a burglary at a jewellers in Houndsditch on the evening of the 16th of December and this incident and the events surrounding it formed the precursor to the famous Siege of Sidney Street in January 1911. (thetvdb.com)