xmlns:atom="http://www.w3.org/2005/Atom"
9. In any proceedings for an offence against these Regulations it shall be a defence to prove that—
(a)the act was committed before 1st July 1997; and
(b)the matters constituting the offence would not have constituted an offence against the Regulations hereby revoked if those Regulations had been in operation when the act was committed.