Section 57 of the Leasehold Reform, Housing and Urban Development Act 1993 (LRHUDA 1993) provides that when a lease is extended, the new lease granted under LRHUDA 1993, s 56 shall be a lease on the same terms as those of the existing lease, as they apply on the relevant date, but with such modifications as may be required or appropriate. LRHUDA 1993, s 57(6)(b) deals with the issue of modifications, and provides that either the tenant or landlord may require that for the purposes