This section applies where a house is let by a local housing authority on a weekly or other periodic tenancy which is not a secure tenancy or an introductory tenancy or a dwelling (in Wales) is let by such an authority on a weekly or other periodic tenancy which is not an occupation contract.
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 authority to the tenant.
The notice is not effective unless—
Where the notice is given for 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.