The grounds on which a landlord may apply to the court for possession of the property comprised in a tenancy to which section one of this Act applies are the following:—
that for purposes of redevelopment after the termination of the tenancy the landlord proposes to demolish or reconstruct the whole or a substantial part of the relevant premises;
the grounds specified in the Third Schedule to this Act (which correspond, subject to the necessary modifications, to the Cases 1 to 9 in Schedule 15 to the Rent Act which specify circumstances in which a court may make an order for possession under that Act).
In this section the expression “the relevant premises” means—
as respects any time after the term date, the premises of which, if the tenancy were not one at a low rent, the tenant would have been entitled to retain possession by virtue of the Rent Act after the coming to an end of the tenancy at the term date;
as respects any time before the term date, the premises agreed between the landlord and the tenant or determined by the court to be likely to be the premises of which, if the tenancy were not one at a low rent, the tenant would be entitled to retain possession as aforesaid.