{
  "url": "https://openlegislation.uk/terrorism-act-2000/section-21",
  "json_url": "https://openlegislation.uk/terrorism-act-2000/section-21.json",
  "legislation": "ukpga/2000/11",
  "legislation_title": "Terrorism Act 2000",
  "legislation_url": "https://openlegislation.uk/terrorism-act-2000",
  "path": "section/21",
  "kind": "section",
  "number": "21",
  "heading": "Cooperation with police.",
  "text": "(1) A person does not commit an offence under any of sections 15 to 18 if he is acting with the express consent of a constable.\n(2) Subject 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—\n(a) his suspicion or belief that the money or other property is terrorist property, and\n(b) the information on which his suspicion or belief is based.\n(3) Subsection (2) applies only where a person makes a disclosure—\n(a) after he becomes concerned in the transaction concerned,\n(b) on his own initiative, and\n(c) as soon as is reasonably practicable.\n(4) Subsection (2) does not apply to a person if—\n(a) a constable forbids him to continue his involvement in the transaction or arrangement to which the disclosure relates, and\n(b) he continues his involvement.\n(5) It 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—\n(a) he intended to make a disclosure of the kind mentioned in subsections (2) and (3), and\n(b) there is reasonable excuse for his failure to do so.\n(6) Where—\n(a) a person is in employment, and\n(b) his employer has established a procedure for the making of disclosures of the same kind as may be made to a constable under subsection (2),\nthis 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.\n(7) A reference in this section to a transaction or arrangement relating to money or other property includes a reference to use or possession.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "C",
      "label": "C1",
      "text": "S. 21 applied (19.2.2001) by S.I. 2001/192, reg. 3"
    },
    {
      "type": "C",
      "label": "C2",
      "text": "S. 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)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukpga/2000/11/section/21",
    "retrieved_at": "2026-10-29T09:21:13.340901+00:00",
    "licence": "OGL-UK-3.0",
    "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
    "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
  }
}