Chief constable is the rank used by the chief police officer of
every territorial police force in the United Kingdom except for
the City of London Police and the Metropolitan Police, as well
as the chief officers of the three 'special' national police
forces, the British Transport Police, Ministry of Defence
Police, and Civil Nuclear Constabulary. The title is also held
by the chief officers of the principal Crown Dependency police
forces, the Isle of Man Constabulary, States of Guernsey Police
Service, and States of Jersey Police. The title is also held, ex
officio, by the president of the Association of Chief Police
Officers under the Police Reform Act 2002. It was also the title
of the chief officer of the Royal Parks Constabulary until this
agency was disbanded in 2004. Throughout the United Kingdom and
Crown Dependencies there are currently 50 chief constables.
These consist of the chief officers of 37 English territorial
forces outside London, 4 Welsh territorial forces, the Police
Service of Scotland,