This section applies where a dwelling-house is let by a housing action trust on a periodic tenancy which is not a secure tenancy, or an introductory tenancy.
The rent payable under the tenancy may, without the tenancy being terminated, be increased with effect from the beginning of a rental period by a written notice of increase given by the housing action trust to the tenant.
A notice under subsection (2) above is not effective unless—
Where a notice is given under subsection (2) above specifying an increase in rent with effect from the beginning of a rental period and the tenancy continues into that period, the notice shall not have effect if—
In this section "rental period" means a period in respect of which a payment of rent falls to be made.