54.—(1) Subject to sub-paragraph (2) Network Rail shall not in the exercise of the powers conferred by this Order compulsorily acquire or use, or acquire any rights over, the bed of the river or any other land of the Port Authority.
(2) Sub-paragraph (1) shall not prevent Network Rail from acquiring compulsorily the interest of any person other than the Port Authority in the land referred to in sub-paragraph (1).