In this Part—
subject to regulation 9(1) and (2), "tenant" means—
a person to whom a domestic PR property is let under a tenancy which falls within section 42(1)(a) of the Act,
any other person with a leasehold interest in a domestic PR property, other than a person who derives title to the domestic PR property from a tenant falling within sub-paragraph (i),
"landlord"—
in relation to a tenant falling within paragraph (a)(i), means a person who lets the domestic PR property to that tenant,
in relation to a tenant falling within paragraph (a)(ii), means a person from whom that tenant directly derives title to the domestic PR property,
"superior landlord" means any person from whom a landlord of a domestic PR property derives title to the domestic PR property.