9.—(1) Where an enforcement authority has reasonable grounds for suspecting that the provisions of these Regulations have been or are being contravened it may serve a notice (a “compliance notice”) on the responsible person or, as the case may be, the retailer and the provisions of sections 26, 27, 28, 29 and 30(1) of the Act of 1968 shall not be applied until such a notice has been so served and the person upon whom it has been served has failed to comply with its requirements.
(2) Schedule 3 shall have effect in respect of a compliance notice.