After section 325(3) of the Principal Act insert —
"(4) A Part 4A site mortgagee may apply to the Tribunal for a possession order if—
(a) the mortgagee has given a site tenant a notice to vacate the Part 4A site in accordance with section 317ZI; and
(b) the site tenant fails to vacate the Part 4A site by the date specified in the notice to vacate.".