(2) Reasonable prior notice must be given before exercising the powers in this article. 

(3) A person in control of the premises to which the Regulator or authorised person reasonably requires access must allow the Regulator or authorised person to have such access. 

(4) The Regulator or authorised person may, when inspecting premises— 

(a) make any such examination and investigation as may be necessary, 

(b) install or maintain monitoring equipment or other apparatus, 

(c) request the production of any record, 

(d) take measurements, photographs, recordings or copies of anything, 

(e) take samples of any articles or substances found in, or on, the premises and of the air, water or land in, on, or in the vicinity of, those premises, 

(f) request any person at the premises to provide facilities or assistance to the extent that is within that person’s control. 

(5) Except to the extent agreed by the person in control of a place or premises, the power referred to in paragraph (1) does not apply to— 

(a) a prohibited place for the purposes of the Official Secrets Act 1911( a ), or 

(b) any other premises to which the Crown restricts access on the ground of national security. 

## Powers of entry, etc. 

47. —(1) A Regulator or an authorised person may— 

(a) enter any premises with a warrant issued in accordance with article 48, together with any equipment or material as may be required; 

(b) when entering premises by virtue of sub-paragraph (a)— 

(i) be accompanied by an authorised person and, if considered appropriate, a constable; 

(ii) direct that any part of the premises be left undisturbed for so long as may be necessary; 

(c) require any person believed to be able to give information relevant to an examination or investigation— 

(i) to attend at a place and time specified by the Regulator or authorised person; 

(ii) to answer questions, in the absence of any person other than those whom the Regulator or authorised person allows to be present and a person nominated by the person being asked questions; 

(iii) to sign a declaration of truth of the answers given by that person; 

(d) require the production of— 

(i) records required to be kept under this Order; 

(ii) other records which the Regulator or authorised person considers it necessary to see for the purpose of an examination or investigation; 

(iii) entries in a record referred to in this sub-paragraph; 

(e) inspect and take copies of the records and entries referred to in sub-paragraph (d). 

(2) The powers in paragraph (1) may only be exercised where the Regulator or an authorised person reasonably believes that there has been a failure to comply with the requirements of this Order. 

(3) Except to the extent agreed by the person in control of a place or premises, the powers referred to in paragraph (1) do not apply in relation to— 

(a) a prohibited place for the purposes of the Official Secrets Act 1911; or 

