Section 190 Special definitions applicable to Part VII.
In Part VII. of this Act—
“Lessor” means the person for the time being entitled in reversion expectant on the interest demised, or, where the reversion is encumbered, the person having power to accept a surrender of the lease, or underlease;
“Lessee” and “underlessee” include the persons respectively deriving title under them;
“A perpetually renewable lease or underlease” means a lease or underlease the holder of which is entitled to enforce (whether or not subject to the fulfilment of any condition) the perpetual renewal therof, and includes a lease or underlease for a life or lives or for a term of years, whether determinable with life or lives or not, which is perpetually renewable as aforesaid, but does not include copyhold land held for a life or lives or for years, whether or not determinable with life, where the tenant had before the commencement of this Act a right of perpetual renewal subject or not to the fulfilment of any condition;
“Underlease,” unless the context otherwise requires, includes a subterm created out of a derivative leasehold interest.