(1) A constable may apply to a justice of the peace for the issue of a warrant under this paragraph for the purposes of a terrorist investigation.
(2) A warrant under this paragraph shall authorise any constable -
(a) to enter premises mentioned in sub-paragraph (2A),
(b) to search the premises and any person found there, and
(c) to seize and retain any relevant material which is found on a search under paragraph (b).
(2A) The premises referred to in sub-paragraph (2)(a) are-
(a) one or more sets of premises specified in the application (in which case the application is for a 'specific premises warrant'); or
(b) any premises occupied or controlled by a person specified in the application, including such sets of premises as are so specified (in which case the application is for an 'all premises warrant').
(3) For the purpose of sub-paragraph (2)(c) material is relevant if the constable has reasonable grounds for believing that -
(a) it is likely to be of substant
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