Apportionment of landlord’s amount
14.—(1) The landlord’s amount (or, where one or more landlords have agreed with the tenant the payment to which they are entitled under paragraph 12(2), such proportion of the landlord’s amount as the remaining landlords shall agree or in default of agreement as an arbiter shall determine) shall be apportioned between the landlords who have not made an agreement with the tenant under paragraph 12(2) by agreement or, in default of agreement, by arbitration, and on a reference under this paragraph an arbiter shall take all relevant factors into account in making his award.
(2) Where a reference to arbitration is made under this paragraph in conjunction with a reference under another paragraph, any additional expenses of the award caused by the apportionment under this paragraph shall be paid by the landlords in such proportions as the arbiter may determine.