(1) If the responsible licensing authority believes on reasonable grounds that a person who is the holder of a licence or authorisation has contravened or is contravening a provision of this Act or the regulations, the responsible licensing authority, or an inspector authorised by the responsible licensing authority to issue such notices, may issue and serve an improvement notice and serve it on the person.(2) An improvement notice may (a) require specified action to be taken within 7 days from the service of the notice (or a lesser period specified in the notice) to rectify the contravention to which the notice relates; or(b) require specified action to be taken within 7 days from the service of the notice (or a lesser period specified in the notice) to ensure that the provision of this Act or regulations to which the notice relates is complied with.(3) An improvement notice must (a) be in writing; and(b) specify the grounds on which it is issued; and(c) specify the requirements of the notice, including the action which must be taken to comply with the notice.