Authorisations granted by an appropriate authority
22.—(1) An authorisation granted by an appropriate authority for the purposes of the EU Plant Health Regulation, the Official Controls Regulation or these Regulations must be in writing and may be granted—
(a)subject to conditions;
(b)for an indefinite period or a specified period.
(2) An authorisation granted by an appropriate authority may permit the appropriate authority to modify, suspend or revoke the authorisation at any time by notice in writing.