800. Effect of order for possession against mesne tenant.

An order for possession on any of the discretionary grounds1 against a protected or statutory tenant2 does not affect the right of any subtenant to whom the dwelling house or any part of it has been lawfully sublet3 before the commencement of proceedings for recovery of possession to retain possession4; nor does the order operate to give a right to possession against any such subtenant5. The effect of this provision is that, where there is a subtenant lawfully and in fact in possession of a dwelling house, the landlord cannot avail himself against the subtenant of any order or