"the Interim Charge" means such sum to be paid on account of the Service Charge in respect of each Accounting Period as the Lessors or their Managing Agents shall specify at their discretion to be a fair and reasonable interim payment. (iii) Clause 3 of the Fifth Schedule - The Service Charge: The first payment of the Interim Charge (on account of the Service Charge for the Accounting Period during which this Lease is executed) shall be made on the execution hereof and thereafter the Interim Charge shall be paid to the Lessors in advance on the Twenty-fourth day of June in each year and in case of default the same shall be recoverable from the Tenant as rent in arrear. (iv) Clause 4 of the Fifth Schedule - The Service Charge: In the event that the cost to the Lessors of performing the obligations of the Lessors hereunder (to the extent that the same are ultimately recoverable from the Tenant) shall at any time during the Accounting Period exceed the Interim Charge then the Lessors shall be entitled by notice in writing served upon the Tenant to require payment by the Tenant to the Lessors within fourteen days thereafter of a further Interim Charge ("