s 1 Authorisation of approvals given before this Act
(1) Any person who before the day on which this Act is passed has done anything in the purported exercise of an approval function is to be treated for all purposes as having had the power to do so. (2) “ Approval function ” means— (a) the function of giving an approval for the purposes of section 12 of the Mental Health Act 1983 (practitioners approved to give medical recommendations), or (b) the function of approving a person as an approved clinician for the purposes of that Act.