“Thus the injustice that would result from there being no provision for cross-appeal in either the LVT Regulations or the Lands Tribunal Rules can be mitigated by virtue of the provision in section 175(4). It is open to the Tribunal to entertain contentions on the part of a respondent that a price more favourable to the respondent than that in the LVT’s decision should be determined and to determine such a price. The respondent, however, has no right in this respect. It is a matter for the Tribunal’s discretion, and clearly the Tribunal would only exercise the power to make a determination more adverse to the appellant than that of the LVT if it was fair to do so.”