Regulation 16 Surrender of a biometric immigration document
The Secretary of State may require the surrender of a biometric immigration document if he thinks that —
information provided in connection with the document was or has become false, misleading or incomplete;
the document (including any information recorded in it) has been altered, damaged or destroyed (whether deliberately or not);
an attempt has been made (whether successfully or not) to copy the document or to do anything to enable it to be copied;
the document should be re-issued (whether because the information recorded in it requires alteration or for any other reason);
the holder’s leave to remain in the United Kingdom is to be varied, cancelled, invalidated or to lapse; or
the document has ceased to have effect under regulation 14(3) or has been cancelled under regulation 17.