(1) It is declared that an existing designation of an offence as an environmental offence at a particular level was validly made and continues to be validly made, as if the offence were so designated after the commencement.
(2) In this section:
"commencement "means the commencement of this section.
"existing designation", in relation to an offence, means a designation or purported designation of an offence as an environmental offence that was made in any way before the commencement, including a way mentioned in section 3.