20.— (1) Where the Minister proposes to revoke an authorisation the Minister shall give 7 days’ notice to the authorisation holder and shall invite the authorisation holder to make written submissions within that period.

(2) If the Minister receives no submissions the authorisation shall stand revoked at the expiry of the 7 day notice period referred to in subsection (1).

(3) Where submissions are received under subsection (1), if having considered them the Minister decides to revoke the authorisation, the Minister shall so advise the authorisation holder and the revocation shall take effect 7 days following the date of that communication.