The Secretary of State may by any order under section F1. . . 17 apply to any water undertaking to which the order relates such of the provisions contained in Schedule 4 as appear to him to be appropriate, subject to such modifications and adaptations as may be specified in the order.

The Secretary of State may at any time by order apply the provisions of Schedule 4 or any of them to the undertaking of F2Scottish WaterF3, subject to such modifications and adaptations as may be specified in the order, and may by the order repeal any provision previously applicable to the undertaking to the extent to which it appears to him, having regard to the provisions of this Act which apply or are applied by the order to the undertaking, to be no longer required, or amend any provision previously applicable to the undertaking to any extent which appears to him necessary to bring it into conformity with the said provisions of this Act.

The provisions of Part I of Schedule 1 shall apply to an order made under subsection (2) on the application of F4Scottish Water , and the provisions of Part II of that Schedule shall apply to an order so made without any such application.