37.—(1) Where—
(a)the IPCC requires the Commissioners to allow a person nominated for the purpose by the IPCC to have access to any premises occupied for the purposes of HMRC and to documents and other things on those premises, and
(b)the requirement is imposed for any of the purposes mentioned in paragraph (2),
it shall be the duty of the Commissioners to secure that the required access is allowed to the nominated person.
(2) Those purposes are—
(a)the purposes of any examination by the IPCC of the efficiency and effectiveness of the arrangements made by the Commissioners for handling complaints or dealing with recordable conduct matters or DSI matters;
(b)the purposes of any investigation by the IPCC under this Part or of any investigation carried out under its supervision or management.
(3) A requirement imposed under this regulation for the purposes mentioned in paragraph (2)(a) must be notified to the Commissioners at least 48 hours before the time at which access is required.
(4) Where—
(a)a requirement imposed under this regulation for the purposes mentioned in paragraph (2)(a) requires access to any premises, document or thing to be allowed to any person, but
(b)there are reasonable grounds for not allowing that person to have the required access at the time at which that person seeks to have it,
the obligation to secure that the required access is allowed shall have effect as an obligation to secure that the access is allowed to that person at the earliest practicable time after there cease to be any such grounds as that person may specify.
(5) The provisions of this regulation are in addition to, and without prejudice to—
(a)the rights of entry, search and seizure that are or may be conferred on—
(i)a person designated for the purposes of regulation 48 (investigations by the IPCC itself), or
(ii)any person who otherwise acts on behalf of the IPCC,
in that person’s capacity as a constable or as a person with the powers and privileges of a constable; or
(b)the obligations of the Commissioners under regulations 12 (co-operation, assistance and information) and 53 (provision of information to the IPCC).