he may apply as if he were a constable for a warrant under section 42 of the Terrorism Act 2000 (c. 11) (warrants for entry and search for purposes of arrest);

the persons authorised by a warrant issued under section 42 of that Act to enter and search premises include the designated person;

Article 17 of the 1989 Order (safeguards) has effect in relation to the issue of a warrant under section 42 of that Act to the designated person as it has effect in relation to the issue of a warrant under that section to a constable;

Article 18 of that Order (execution of warrants) has effect in relation to a warrant issued under section 42 of that Act (whether to the designated person or to any other person) as if references in that Article to a constable included references to the designated person.