Where the tenant under a tenancy to which this Part of this Act applies, being a tenancy granted for a term of years certain, gives to the immediate landlord, not later than three months before the date on which apart from this Act the tenancy would come to an end by effluxion of time, a notice in writing that the tenant does not desire the tenancy to be continued, section 24 of this Act shall not have effect in relation to the tenancy, unless the notice is given before the tenant has been in occupation in right of the tenancy for one month.
Section 24 of this Act shall not have effect in relation to a tenancy for a term of years certain where the tenant is not in occupation of the property comprised in the tenancy at the time when, apart from this Act, the tenancy would come to an end by effluxion of time.
A tenancy granted for a term of years certain which is continuing by virtue of section 24 of this Act shall not come to an end by reason only of the tenant ceasing to occupy the property comprised in the tenancy but may be brought to an end on any ... day by not less than three months’ notice in writing given by the tenant to the immediate landlord, whether the notice is given after the date on which apart from this Act the tenancy would have come to an end or before that date, but not before the tenant has been in occupation in right of the tenancy for one month.
Where a tenancy is terminated under subsection (2) above, any rent payable in respect of a period which begins before, and ends after, the tenancy is terminated shall be apportioned, and any rent paid by the tenant in excess of the amount apportioned to the period before termination shall be recoverable by him.