5Without prejudice to subsection (5) of section 157 of this Act and subject to paragraph 4(4) of Schedule 2 to the [1991 c. 60.] Water Consolidation (Consequential Provisions) Act 1991, if it appears to the Secretary of State that the revocation of a byelaw under that section is necessary or expedient, he may, after—
(a)giving notice to the relevant undertaker which made the byelaw;
(b)considering any representations or objections made by that undertaker; and
(c)if required by that undertaker, holding a local inquiry,
revoke that byelaw.