18(1)Any dispute arising between the nominated undertaker and the undertakers under this Part of this Schedule (other than a dispute under paragraph 5(1) to (4) above) shall be determined by an arbitrator who shall be appointed by agreement between the parties or, in default of such agreement, shall be the Secretary of State.U.K.
(2)In determining any such dispute the arbitrator may, if he thinks fit, require the nominated undertaker to construct any temporary or other works so as to avoid, so far as reasonably possible, interference with the use of any apparatus.