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The General Service Whistle, trademarked as "The Metropolitan" by J. Hudson & Co. became standard issue for the Metropolitan Police in 1884, and thereafter in many other forces. Prior to this, although there was some use of unstandardised whistles, police used hand rattles. Both rattles and whistles were used to call for back-up in areas where neighbourhood beats overlapped. Police whistles fell into disuse in many counties in 1969, when early hand-held radios were brought into service. With the rise of the motor car, the whistle was no longer usefully audible in urban areas. The whistle is still used by some police forces today, and engraved ceremonial versions are sometimes presented to police officers upon occasions such as their retirement.