"If the service charges claimed from the [respondent] include a subsidy of the "social" housing, they are not reasonable and will have to be re-calculated to exclude any such subsidy before they become payable."
"(2) Where a service charge is payable before the relevant costs are incurred, no greater amount than is reasonable is so payable, and after the relevant costs have been incurred any necessary adjustments shall be made by repayment, reduction or subsequent charges or otherwise."
"AND ALSO paying on demand the Tenant's Proportion which shall be treated as further or additional rent" 10 (2) The expression "
"the proportion of the Maintenance Expenses payable by the Tenant in accordance with the provisions of Schedule 7 SAVE THAT all or any of the said Proportions may be subject to variation from time to time in accordance with the provisions of Paragraph 2 of Schedule 7" (The provisions in schedule 7 paragraph 2 regarding the variation of proportions can only be engaged in circumstances where it has become necessary or equitable to recalculate the relevant percentages due to any re-planning of the layout of the development or the buildings, which so far as presently relevant has not occurred). (3) The respondent covenanted with the appellant to pay the rent and also to pay that part of the Tenant's Proportion which is payable to the landlord. (4) Schedule 7 made provision for the Tenant's Proportion of the Maintenance Expenses. It is not necessary for the purposes of the present case to consider the element of Maintenance Expenses which are referable to the Estate Common Parts Charge (or reserve fund) as these are connected with the maintenance of the grounds, for which Cholsey Meadows Management Co Ltd were responsible and to whom payments for such matters were to be made. Concentrating upon the Maintenance Expenses referable to the buildings (for which the appellant is responsible and in relation to which the present service charges have been demanded on account) it is provided in paragraphs 1.2 of schedule 7 that the Tenant's Proportion means: "