2(1)If, in a case where either a tenancy has become a protected tenancy by virtue of section 18(1) of the 1974 Act or by virtue or subsections (1) and (3) of section 15 of this Act or a statutory tenancy has been imposed by virtue of paragraph 1 above—E+W
(a)a rent (the “previous registered rent”) was registered for the dwelling-house at a time when Part VIII of the 1972 Act or Part VI of this Act applied to that tenancy or, as the case may be, to the tenancy referred to in paragraph 1(1) above; and
(b)a rent has subsequently been registered for the dwelling-house under Part IV of this Act but the rent so registered is less than the previous registered rent,
then subject to paragraph 4 below, until such time as a rent is registered under Part IV which is higher than the previous registered rent, the contractual rent limit or, as the case may be, the maximum rent recoverable during any statutory period of the regulated tenancy concerned shall be the previous registered rent.
(2)If in a case falling within sub-paragraph (1) above, the Secretary of State has, in a direction under section 90 of this Act, specified a rent limit for the dwelling-house higher than the previous registered rent, then, during the period for which that direction has effect as mentioned in that section, sub-paragraph (1) above shall have effect with the substitution for any reference to the previous registered rent of a reference to the rent limit so specified.
(3)Nothing in this paragraph shall affect the operation of section 73 of this Act and, accordingly, where the registration of a rent is cancelled in accordance with that section, sub-paragraph (1) above shall cease to apply in relation to the rent of the dwelling-house concerned.