339. Liability of former tenant or his guarantor where tenancy subsequently varied.

A variation may not bind the original tenant1. If an assignee agrees a variation with the landlord, the variation does not alter the terms of the contract between the original parties to the lease. The original tenant is not released from liability, but the liability remains governed by the terms of the contract which he entered when he was granted the lease. A former tenant is relieved of liability2 for any amount which is referable to a relevant variation made on or after 1 January 1996. A relevant variation need not be contained in a deed. It is a