1.—(1) For the protection of the specified undertakers the provisions of this Part of this Schedule shall, except in so far as otherwise agreed in writing between Network Rail and any specified undertaker, have effect.
(2) The provisions of Schedule 7 (provisions relating to statutory undertakers) shall not apply in relation to apparatus to which this Schedule applies.
(3) Nothing in this Part of this Schedule shall affect the operation of any enactment or agreement in force or entered into before the date on which this Order is made and regulating the relations between Network Rail and a specified undertaker in respect of any apparatus laid or erected in land belonging to Network Rail.