The Crown Prosecution Service (CPS) is an authority responsible for prosecuting cases on behalf of the police (traditionally, in the name of the Queen or the King), once the police have completed their investigation.
A minority of cases are prosecuted by other law enforcement agencies, such as English local authorities, Welsh local authorities, the Department for Work and Pensions or the Health and Safety Executive, or private prosecutors such as the RSPCA or the BBC in its capacity as the TV licensing authority.