(1) If-

(a) a person does anything outside the United Kingdom, and

(b) his action, if done in a part of the United Kingdom, would constitute an offence falling within subsection (2),

he shall be guilty in that part of the United Kingdom of the offence.

(2) The offences falling within this subsection are-

(a) an offence under section 1 or 2 of this Act;

(b) an offence under section 5 or 6 or any of sections 8 to 11 of this Act;

(c) an offence under section 11(1) of the Terrorism Act 2000 (c. 11) (membership of proscribed organisations);

(ca) an offence under section 12(1) or (1A) of that Act (inviting or expressing support for proscribed organisation);

(cb) an offence under section 13 of that Act (uniform etc associated with proscribed organisation);

(d) an offence under section 54 of that Act (weapons training);