A Basic Command Unit (BCU) is the largest unit into which territorial British Police forces are divided This may actually be called a BCU or may have another designation, such as Division, Area, Local Policing Unit (LPU), or Local Policing Team (LPT). There are 228 BCUs (or equivalent units) in England and Wales.
Most forces are divided into at least three BCUs and some have many more. Most BCUs are further subdivided into smaller units. The BCU is usually commanded by a Chief Superintendent.
The Metropolitan Police use the term Borough Operational Command Unit (BOCU) for regional units (which are based on the 32 London boroughs). The term Operational Command Unit (OCU) is used for specialised units, for example the Aviation Security OCU.
West Midlands Police is split into 12 Local Policing Units (LPUs). Each LPU is in turn organized into four Core Policing Teams (CPTs) that manage its different core functions: Investigation, Neighbourhood, Response and Community Action and Priority Team (CAPT).
Warwickshire Police has abolished BCUs, the first British territorial police force to do so. The force is now divided directly into five Districts, each headed by a Chief Inspector. These were formerly grouped into two Areas (BCUs), North and South, each headed by a Chief Superintendent.