Landlord and Tenant Act 1954

12 Where, during the period of the statutory tenancy and before all instalments of the payment for accrued tenant's repairs have become payable, the interest of the landlord comes to an end or ceases to be an interest falling within paragraphs (a) and (b) of the proviso to subsection (4) of section twenty-one of this Act, he shall thereupon be entitled to recover from the person who thereupon becomes the landlord such amount (if any) as is equal to so much of the expenses reasonably incurred by the landlord—

(a) in ascertaining what initial repairs are required in consequence of failure, by the tenant to fulfil his obligations under the former tenancy; and

(b) for the purposes of the relevant initial repairs;

as is recoverable from the tenant and has not been recovered.