Metropolitan Police Service is divided into 33 areas, or 'boroughs'. Each division has a Chief Superintendent, called the Borough Commander. The Borough Commander is in charge of all the policing in that area. Also Chief Superintendent may oversee an OCU or Operational Command Unit, for example Aviation Security or the Diplomatic Protection Group Sun Hill's most notable Chief Superintendent was Charles Brownlow. Adam Okaro was promoted to Chief Superintendent and Borough Commander over to Barton Street. Other Borough Commanders have included: well known chief superintendents have been