"....either is in breach of any obligation owed by him to the tenant under his tenancy and relating to the management of the premises in question or any part of them (or, in the case of an obligation dependent on notice) would be in breach of any such obligation but for the fact that it has not been reasonably practical for the tenant to give him the appropriate notice, and. .... (iii) that it is just and convenient to make the order in all the circumstances of the case."
"The applicant suggests that, in arriving at its decision, the tribunal should have considered all the matters insection 24(2) of the Landlord and Tenant Act 1987 ("the Act"). In fact, the application was made undersection 24(9) of the Act , which contains no such requirement. The applicant is justified in pointing out that the tribunal considered whether it was just and equitable that Mr Martin's appointment should be extended, whereas the true test is whether it is just and convenient in all the circumstances of the case to vary the order. It is, however, implicit in the tribunal's conclusion that the variation was equitable that it was also convenient. There is no reason why the tribunal could not have found on the material before it that it was also convenient."
"[A leasehold valuation tribunal] may, on the application of any person interested, vary or discharge (whether conditionally or unconditionally) an order made under this section."
"[The tribunal] shall not vary or discharge an order under subsection (9) on [the application of any relevant person] unless it is satisfied- (a) that the variation or discharge of the order will not result in a recurrence of the circumstances which led to the order being made, and (b) that it is just and convenient in all the circumstances of the case to vary and discharge the order."