2(1)A tenancy under which, at any time after this Schedule comes into force, either no rent is payable or the rent payable is less than that specified by order made by the Secretary of State, but no tenancy which is or, at any time, was an assured tenancy shall cease to be an assured tenancy by virtue only of this paragraph of this Schedule.S
(2)In determining whether the rent under a tenancy falls within sub-paragraph (1) above, there shall be disregarded such part (if any) of the sums payable by the tenant as is or was expressed (in whatever terms) to be payable in respect of services, repairs, maintenance or insurance, unless it could not have been regarded by the parties to the tenancy as a part so payable.
(3)An order under sub-paragraph (1) above may specify different rents in relation to—
(a)different kinds of houses;
(b)different areas.
(4)An order under sub-paragraph (1) above may specify rent by reference to such periods or times or such other factors or such combinations thereof as may be specified in the order.