Schedule 11 (which makes, in relation to claims to enfranchisement or an extended lease under Part I of the Leasehold Reform Act 1967 and claims to collective enfranchisement or a new lease under Chapter I or II of Part I of the M1Leasehold Reform, Housing and Urban Development Act 1993, provision for compensation of the landlord where the claim has prolonged an existing tenancy, but is ineffective) shall have effect.