13.—(1) The Treasury may to such extent and subject to such restrictions and conditions as it may think proper, delegate or authorise the delegation of any of its powers under this Order (other than the power to give authority under the Schedule to this Order to apply for a search warrant) to any person, or class or description of persons, approved by it, and references in this Order to the Treasury shall be construed accordingly.
(2) Any licence granted under this Order may be either general or special, may be subject to or without conditions, may be limited so as to expire on a specified date unless renewed and may be varied or revoked by the authority which granted it.