In this Chapter "long lease" means (subject to the following provisions of this section)—
A lease terminable by notice after a death, a marriage or the formation of a civil partnership is not to be treated as a long lease for the purposes of this Chapter if—
Where the tenant of any property under a long lease . . . , on the coming to an end of that lease, becomes or has become tenant of the property or part of it under any subsequent tenancy (whether by express grant or by implication of law), then that tenancy shall be deemed for the purposes of this Chapter (including any further application of this subsection) to be a long lease irrespective of its terms.
Where—
this Chapter shall apply as if the term originally granted had been one exceeding 21 years.
References in this Chapter to a long lease include—
Where in the case of a flat there are at any time two or more separate leases, with the same landlord and the same tenant, and—
but this subsection has effect subject to the operation of subsections (3) to (5) in relation to any of the separate leases.
In this section—
"appurtenant property" has the same meaning as in section 1;
"shared ownership lease" means a lease—
(a)granted on payment of a premium calculated by reference to a percentage of the value of the demised premises or the cost of providing them, or
(b)under which the tenant (or his personal representatives) will or may be entitled to a sum calculated by reference, directly or indirectly, to the value of those premises; and
"total share", in relation to the interest of a tenant under a shared ownership lease, means his initial share plus any additional share or shares in the demised premises which he has acquired.