s 72 Assistance by offender: undertakings as to use of evidence
(1) If a specified prosecutor thinks that for the purposes of the investigation or prosecution of an indictable offence or an offence triable either way it is appropriate to offer any person an undertaking that information of any description will not be used against the person in any proceedings to which this section applies he may give the person a written notice under this subsection (a “ restricted use undertaking ”). (2) This section applies to— (a) any criminal proceedings; (b) proceedings under Part 5 of the Proceeds of Crime Act 2002 (c. 29). (3) If a person is given a restricted use undertaking the information described in the undertaking must not be used against that person in any proceedings to which this section applies brought in England and Wales or Northern Ireland except in the circumstances specified in the undertaking. (4) A restricted use undertaking ceases to have effect in relation to the person to whom it is given if the person fails to comply with any conditions specified in the undertaking. (5) The Director of Public Prosecutions for Northern Ireland or a person designated by him under section 71(4)(e) may not give a restricted use undertaking in relation to proceedings in England and Wales. (6) The Director of Public Prosecutions or a person designated by him under section 71(4)(e) may not give a restricted use undertaking in relation to proceedings in Northern Ireland. (7) Specified prosecutor must be construed in accordance with section 71(4).