(1) A person commits an offence if-

(a) he attends at any place, whether in the United Kingdom or elsewhere;

(b) while he is at that place, instruction or training of the type mentioned in section 6(1) of this Act or section 54(1) of the Terrorism Act 2000 (c. 11) (weapons training) is provided there;

(c) that instruction or training is provided there wholly or partly for purposes connected with the commission or preparation of acts of terrorism or Convention offences; and

(d) the requirements of subsection (2) are satisfied in relation to that person.

(2) The requirements of this subsection are satisfied in relation to a person if-

(a) he knows or believes that instruction or training is being provided there wholly or partly for purposes connected with the commission or preparation of acts of terrorism or Convention offences; or

(b) a person attending at that place throughout the period of that person's attendance could not reasonably have failed to understand that instruction or training was being provided there wholly or partly for such purposes.

(3) It is immaterial for the purposes of this section-