While a final letting notice is in force in relation to premises, the landlord of the premises may not—
without the written consent of the local authority that served the notice.
The local authority must give or refuse consent under subsection (1) within a reasonable time after it is sought.
Subsection (1) does not apply to the grant of a tenancy pursuant to an obligation that bound the landlord before the initial letting notice preceding the final letting notice took effect.
An obligation that is conditional on the service of an initial letting notice or final letting notice in relation to the premises is to be disregarded for the purposes of subsection (3).
A tenancy granted, or agreement entered into, without consent required by subsection (1) is void.
But subsection (5) is to be treated as never having applied to a tenancy, licence or agreement if—