Subsection (2) applies if, in breach of an express or implied term of the tenancy, a tenant of a dwelling-house let under an assured tenancy to which this section applies—
parts with possession of the dwelling-house, or
sub-lets the whole of the dwelling-house (or sub-lets first part of it and then the remainder).
The tenancy ceases to be an assured tenancy and cannot subsequently become an assured tenancy.
This section applies to an assured tenancy—
under which the landlord is a private registered provider of social housing or a registered social landlord, and
which is not a shared ownership lease.
In this section "registered social landlord" has the same meaning as in Part 1 of the Housing Act 1996.
In this section "shared ownership lease" means a lease of a dwelling-house—
granted on payment of a premium calculated by reference to a percentage of the value of the dwelling-house or of the cost of providing it, or
under which the lessee (or the lessee's personal representatives) will or may be entitled to a sum calculated by reference, directly or indirectly, to the value of the dwelling-house.