In this Part of this Act, except where the context otherwise requires,—
"appropriate tribunal" means—in relation to a dwelling in England, the First-tier Tribunal or, where determined by or under Tribunal Procedure Rules, the Upper Tribunal; andin relation to a dwelling in Wales, a rent assessment committee;
"dwelling" means a house or part of a house;
"lessee" means the person to whom is granted, under a restricted contract, the right to occupy the dwelling in question as a residence and any person directly or indirectly deriving title from the grantee;
"lessor" means the person who, under a restricted contract, grants to another the right to occupy the dwelling in question as a residence and any person directly or indirectly deriving title from the grantor;
"register" means the register kept ... in pursuance of section 79 or 79A of this Act;
...
"services" includes attendance, the provision of heating or lighting, the supply of hot water and any other privilege or facility connected with the occupancy of a dwelling, other than a privilege or facility requisite for the purposes of access, cold water supply or sanitary accommodation.
References in this Part of this Act to a party to a contract include references to any person directly or indirectly deriving title from such a party.
Where separate sums are payable by the lessee of any dwelling to the lessor for any two or more of the following:—
(a) occupation of the dwelling,
(b) use of furniture, and
(c) services,
any reference in this Part of this Act to "rent" in relation to that dwelling is a reference to the aggregate of those sums and, where those sums are payable under separate contracts, those contracts shall be deemed to be one contract.
The references in sections 79(3) , 79A(3) and 81(2) of this Act to rates, in respect of a dwelling, include references to such proportion of any rates in respect of a hereditament of which the dwelling forms part as may be agreed in writing between the lessor and the lessee or determined by the county court.