# Terrorism Act 2000, Section 11: Membership.


(1) A person commits an offence if he belongs or professes to belong to a proscribed organisation.
(2) It is a defence for a person charged with an offence under subsection (1) to prove—
(a) that the organisation was not proscribed on the last (or only) occasion on which he became a member or began to profess to be a member, and
(b) that he has not taken part in the activities of the organisation at any time while it was proscribed.
(3) A person guilty of an offence under this section shall be liable—
(a) on conviction on indictment, to imprisonment for a term not exceeding 14 years, to a fine or to both, or
(b) on summary conviction, to imprisonment for a term not exceeding six months, to a fine not exceeding the statutory maximum or to both.
(4) In subsection (2) “proscribed” means proscribed for the purposes of any of the following—
(a) this Act;
(b) the Northern Ireland (Emergency Provisions) Act 1996;
(c) the Northern Ireland (Emergency Provisions) Act 1991;
(d) the Prevention of Terrorism (Temporary Provisions) Act 1989;
(e) the Prevention of Terrorism (Temporary Provisions) Act 1984;
(f) the Northern Ireland (Emergency Provisions) Act 1978;
(g) the Prevention of Terrorism (Temporary Provisions) Act 1976;
(h) the Prevention of Terrorism (Temporary Provisions) Act 1974;
(i) the Northern Ireland (Emergency Provisions) Act 1973.

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Source: https://www.legislation.gov.uk/ukpga/2000/11/section/11 (the official version)
Page: https://openlegislation.uk/terrorism-act-2000/section-11
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.