(1) The Terrorism Act 2000 is amended as follows.

(2) In section 3 (proscription of organisations), at the end insert-

"(6) Where the Secretary of State believes-

(a) that an organisation listed in Schedule 2 is operating wholly or partly under a name that is not specified in that Schedule (whether as well as or instead of under the specified name), or

(b) that an organisation that is operating under a name that is not so specified is otherwise for all practical purposes the same as an organisation so listed,

he may, by order, provide that the name that is not specified in that Schedule is to be treated as another name for the listed organisation.

(7) Where an order under subsection (6) provides for a name to be treated as another name for an organisation, this Act shall have effect in relation to acts occurring while-

(a) the order is in force, and

(b) the organisation continues to be listed in Schedule 2,

as if the organisation were listed in that Schedule under the other name, as well as under the name specified in the Schedule.

(8) The Secretary of State may at any time by order revoke an order under subsection (6) or otherwise provide for a name specified in such an order to cease to be treated as a name for a particular organisation.