a chief officer of police;

the Serious Organised Crime Agency;

the Commissioners of Customs and Excise, or a person providing services to them in connection with the provision of those services;

a person with whom the Secretary of State has made a contract or other arrangements under section 95 or 98 or a sub-contractor of such a person; or

any specified person, for purposes specified in relation to that person.

comes into the possession of a person listed in subsection (1) or someone acting on his behalf, or

is discovered by a person listed in subsection (1) or someone acting on his behalf.

retain for immigration purposes a document or article supplied to him under subsection (2), and

dispose of a document or article supplied to him under subsection (2) in such manner as he thinks appropriate (and the reference to use in subsection (2) includes a reference to disposal).

the administration of immigration control under the Immigration Acts;

the prevention, detection, investigation or prosecution of criminal offences under those Acts;

the imposition of penalties or charges under Part II;

the provision of support for asylum-seekers and their dependants under Part VI;

such other purposes as may be specified.

the chief officer of police for a police area in England and Wales;

the chief constable of a police force maintained under the M1Police (Scotland) Act 1967;

the Chief Constable of the Royal Ulster Constabulary.