s 27 Documents produced or found
(1) For paragraph 4(4) of Schedule 2 to the Immigration Act 1971 (c. 77) (control on entry: documents) substitute— (4) Where a passport or other document is produced or found in accordance with this paragraph an immigration officer may examine it and detain it— (a) for the purpose of examining it, for a period not exceeding 7 days; (b) for any purpose, until the person to whom the document relates is given leave to enter the United Kingdom or is about to depart or be removed following refusal of leave or until it is decided that the person does not require leave to enter; (c) after a time described in paragraph (b), while the immigration officer thinks that the document may be required in connection with proceedings in respect of an appeal under the Immigration Acts or in respect of an offence. (5) For the purpose of ascertaining that a passport or other document produced or found in accordance with this paragraph relates to a person examined under paragraph 2, 2A or 3 above, the person carrying out the examination may require the person being examined to provide information (whether or not by submitting to a process by means of which information is obtained or recorded) about his external physical characteristics (which may include, in particular, fingerprints or features of the iris or any other part of the eye). (2) Paragraph 4(2A) of that Schedule shall cease to have effect.