2(1)An authorised person may take any steps which are reasonably necessary for—
(a)photographing the detained person,
(b)measuring him, or
(c)identifying him.
(2)In sub-paragraph (1) “authorised person” means any of the following—
(a)a constable,
(b)a prison officer,
(c)a person authorised by the Secretary of State, and
(d)in the case of a person detained under Schedule 7, an examining officer (within the meaning of that Schedule).
(3)This paragraph does not confer the power to take—
(a)fingerprints, non-intimate samples or intimate samples (within the meaning given by paragraph 15 below), or
(b)relevant physical data or samples as mentioned in section 18 of the [1995 c. 46.] Criminal Procedure (Scotland) Act 1995 as applied by paragraph 20 below.