In the provisions of this Act relating to service charges—
a statutory tenant, and
where the dwelling or part of it is sub-let, the sub-tenant.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
"landlord" includes any person who has a right to enforce payment of a service charge;
"services" includes, in relation to a dwelling in a higher-risk building (as defined by section 30I), building safety measures within the meaning of section 30D;
"tenant" includes