In section 2 of the Water Industry Act 1991 (general duties of the Secretary of State and the Water Services Regulation Authority with respect to the water industry), in subsection (3) (general considerations in exercising powers and duties), after paragraph (b) there is inserted—
“(ba)to secure that no undue preference (including for itself) is shown, and that there is no undue discrimination, in the doing by such a company of—
(i)such things as relate to the provision of services by itself or another such company, or
(ii)such things as relate to the provision of services by a water supply licensee or a sewerage licensee;”.