9.—(1) A service permit must be granted for a specified period of time, such period beginning at the effective time.
(2) A service permit authorising the provision of a local service ceases to be valid if—
(a)the franchising scheme for the area in which the local service is provided has been revoked; or
(b)the franchising scheme for the area in which the local service is provided has been varied so that it no longer relates to the area in which the local service is provided.
(3) A service permit ceases to be valid under paragraph (3) from the date the revocation or variation is to have effect.