After section 158E--
insert--
'(1) A certificate given under a repealed provision is taken, for 6 months after the commencement of this section, to be a prescribed medical certificate.
'(2) In this section--
repealed provision means the Transport Operations (Passenger Transport) Standard 2000, section 8(1) or 8B(1)(a) as in force immediately before the commencement of this section.'.