Fully-sworn British police officers are not employees, they are servants of the Crown.

(According to the Police Federation, “Every sworn police officer in England and Wales is a ‘Constable’, irrespective of rank,” … “those who hold the Office of Constable are servants of the Crown, not employees. Police officers have access to most statutory employment rights afforded to employees, but it is a criminal offence for police officers to take industrial action.” This means the British police cannot go on strike, but on the other hand, they can’t be made redundant either, as a result some police forces are trying to enforce retirement, because regulations state that a policeman can be “required to retire” after 30 or more years’ service.)