Pittsburgh Police hats with checkered bands, which are dark navy blue and gold in color, popularly known as the "Sillitoe Tartan" and named after its originator, Percy J. Sillitoe, Chief Constable of Glasgow, Scotland, in the 1930s. While the checkered band is a common police symbol in the United Kingdom, Australia and some European countries, the Chicago Police Department, Cook County Sheriff's Police, the Allegheny County Sheriff's Office, and the Pittsburgh Bureau of Police are the only police forces in the United States that have adopted it as part of their uniforms. As recently as July 1930, police were required to wear
Police cadets in the United Kingdom but are issued with a navy blue combat-style sweater (marked 'Police Cadet') instead of a tunic; however in Sussex their uniform is similar to a police officer's, with white shirt, tie, epaulettes, black trousers, and black shoes. They also have cadet jackets and a high visibility jacket. In Hertfordshire, cadets were issued with a light blue V-neck sweater, which had the county emblem embroidered on it. The Hertfordshire scheme has now changed and cadets wear a uniform similar to regular police officers, but with the word "cadet" embroidered on epaulette rank slides instead of a collar number and similarly the