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 uniforms and equipment in the United Kingdom police of the Greater Manchester Police and of the Merseyside Police wear a ceremonial uniform which includes a distinctive cavalry-style helmet, similar to those worn by the Household Cavalry. Mounted police in Cleveland Police wear a similar uniform, but with a red rather than a white plume. Police officers may wear mess dress to formal dinners if appropriate but this is most usually worn by officers who have achieved the rank of superintendent or above. The mess dress of the Metropolitan Police is dark blue with black cuffs and a black 'roll' collar having an embroidered Brunswick star on each