Glengarry Boys' Brigade; namely Warrant Officers, Lieutenants and Brevet Captains. In 1932 Percy Sillitoe, the Chief Constable of the City of Glasgow Police, abolished the traditional custodian helmet and added a new feature to the peaked caps worn by his police officers. This new feature was a black and white chequered cap band based on the dicings seen on the glengarry headress of the Scottish regiments. The diced band, popularly known as the Sillitoe Tartan, later spread to police forces in Australia, New Zealand, and the rest of the United Kingdom, as well as to some other parts of the world,
Police ranks of the United Kingdom Inspector-General and had a different rank structure until 1 June 1970, when it fully adopted the rank system used elsewhere in the United Kingdom. The RUC has now been succeeded by the Police Service of Northern Ireland, which uses the same ranks, but has a different version of the rank insignia, with the star from the PSNI badge replacing the crown. Unusually, the star is worn below the pip by chief superintendents and by the Chief Constable, who wears both symbols above his tipstaves. The PSNI has retained the RUC's distinctive inverted (point-up) sergeants' chevrons. The Isle of Man Constabulary