This section applies to—
regulations under section 143A that, in relation to relevant undertakers whose areas are wholly or mainly in England, make provision of the sort described in subsection (2)(d) of that section, and
regulations under section 143AA.
Before making regulations to which this section applies, the Secretary of State must (subject to subsection (3)) consult—
the Authority,
the relevant undertakers to which the regulations would apply, and
such other persons as the Secretary of State considers appropriate.
But the Secretary of State does not have to consult if—
the regulations only amend earlier regulations, and
the Secretary of State considers that the amendments are sufficiently minor that consultation is unnecessary.