The Sizewell C (Nuclear Generating Station) Order 2022

61.  The alteration, extension, removal or re-location of any apparatus shall not be implemented until—

(a) any required permits under the Environmental Permitting (England and Wales) Regulations 2016 or other legislation and any other associated consents are obtained; and

(b) the undertaker has made the appropriate application under section 185 (duty to move pipes, etc.) of the Water Industry Act 1991 as may be required by that provision and has provided a plan and section of the works proposed to ESW and ESW has given the necessary consent or approval under that provision, such agreement not to be unreasonably withheld or delayed,

and such works are to be executed only in accordance with the plan, section and description submitted and in accordance with such reasonable requirements as may be made by ESW for the alteration or otherwise for the protection of the apparatus, or for securing access to it.