Complex sentence: Since 1998, the City of Peterborough has been a separately administered area, as a unitary authority, but is associated with Cambridgeshire for ceremonial purposes such as Lieutenancy, and functions such as policing and the fire service.
Split into simpler sentences: Since 1998, the City of Peterborough has been a separately administered area, as a unitary authority. It is associated with Cambridgeshire for ceremonial purposes such as Lieutenancy, and functions such as policing and the fire service.