(1) Where a member of the British Transport Police Force established by Part 3 of the Railways and Transport Safety Act 2003 has been requested by a constable of-
(a) the police force for any police area,
(b) the Ministry of Defence Police, or
(c) the the Civil Nuclear Constabulary,
("the requesting force") to assist him in the execution of his duties in relation to a particular incident, investigation or operation, members of the British Transport Police Force established by Part 3 of the Railways and Transport Safety Act 2003 have for the purposes of that incident, investigation or operation the same powers and privileges as constables of the requesting force.
(2) Members of the British Transport Police Force established by Part 3 of the Railways and Transport Safety Act 2003 have in any police area the same powers and privileges as constables of the police force for that police area-
(a) in relation to persons whom they suspect on reasonable grounds of having committed, being in the
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