Water Management Act 2000

anything begun before the appointed day under a provision of the old legislation for which there is a corresponding provision in the amended legislation may be continued and completed under the old legislation as if this Act had not been enacted, and

subject to paragraph (a), anything done under a provision of the old legislation for which there is a corresponding provision in the amended legislation (including anything arising under paragraph (a)) is taken to have been done under the corresponding provision of the amended legislation.