Each Borough Operational Command Unit (BOCU) which provides policing for each of the 32 London boroughs has a contingent of Special Constables, usually supervised by a number of Special Sergeants and a Special Inspector, on occasion in partnership with a regular officer .
A number of Specials are sponsored by their employers as part of the Employer Supported Policing (ESP) scheme, in which employers release their employees for a specific amount of time every fortnight to perform MSC duties [REF].