http://www.legislation.gov.uk/ukpga/2000/11/section/21/2017-07-31Terrorism Act 2000 An Act to make provision about terrorism; and to make temporary provision for Northern Ireland about the prosecution and punishment of certain offences, the preservation of peace and the maintenance of order.texttext/xmlenStatute Law Database2026-05-01Expert Participation2017-07-31 Part III Terrorist Property Offences Cooperation with police.211A person does not commit an offence under any of sections 15 to 18 if he is acting with the express consent of a constable.2Subject to subsections (3) and (4), a person does not commit an offence under any of sections 15 to 18 by involvement in a transaction or arrangement relating to money or other property if he discloses to a constable—ahis suspicion or belief that the money or other property is terrorist property, andbthe information on which his suspicion or belief is based.3Subsection (2) applies only where a person makes a disclosure—aafter he becomes concerned in the transaction concerned,bon his own initiative, andcas soon as is reasonably practicable.4Subsection (2) does not apply to a person if—aa constable forbids him to continue his involvement in the transaction or arrangement to which the disclosure relates, andbhe continues his involvement.5It is a defence for a person charged with an offence under any of sections 15(2) and (3) and 16 to 18 to prove that—ahe intended to make a disclosure of the kind mentioned in subsections (2) and (3), andbthere is reasonable excuse for his failure to do so.6Where—aa person is in employment, andbhis employer has established a procedure for the making of disclosures of the same kind as may be made to a constable under subsection (2),this section shall have effect in relation to that person as if any reference to disclosure to a constable included a reference to disclosure in accordance with the procedure.7A reference in this section to a transaction or arrangement relating to money or other property includes a reference to use or possession.S. 21 applied (19.2.2001) by S.I. 2001/192, reg. 3S. 21(3) modified (16.2.2009) by Counter-Terrorism Act 2008 (c. 28), ss. 77(4), 100(5) (with s. 101(2)); S.I. 2009/58, art. 2(e)