(1) A person who arranges, manages or assists in arranging or managing a meeting which is
(a) to support a terrorist group,
(b) to further the activities of a terrorist group, or
(c) to be addressed by-a person who belongs or professes to belong to a terrorist group
commits an offence and is liable on conviction on indictment to a term of imprisonment of not less than seven years and not more than twenty-five years.
(2) In this section "meeting" means the coming together of two or more persons whether or not the public is admitted.