1008. Covenants in superior leases.

Where the tenant1 obtains a statutory tenancy so that his liability on the covenants in the original lease is extinguished and thereafter he holds on the terms2 of the statutory tenancy3, any terms of any tenancy owned by the competent landlord (or by any other landlord)4, whether to be performed during that tenancy or on or after the expiration or determination of that tenancy5, cease to have effect in so far as they relate to the premises constituting the dwelling house6. Any liability of the competent landlord or any mesne landlord7 or of any predecessor in title of the