. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The functions to which subsection (2A) below applies shall be concurrent functions of the Authority and the CMA.
This subsection applies to the functions of the CMA under Part 4 of the 2002 Act (other than sections 166 , 167C 171 and 174E) so far as those functions—
The Authority shall be entitled to exercise, concurrently with the CMA, the functions of the CMA under the provisions of Part 1 of the Competition Act 1998 (other than sections 31D(1) to (6) , 35C, 38(1) to (6) , 40B(1) to (4) and 51), so far as relating to —
which relate to commercial activities connected with the supply of water or securing a supply of water or with the provision or securing of sewerage services.
So far as necessary for the purposes of, or in connection with, subsections (2) and (2A) above—
Section 130A of the 2002 Act is to have effect in its application in relation to the Authority by virtue of subsections (2) and (2A)—
So far as necessary for the purposes of, or in connection with, the provisions of subsection (3) above, references in Part I of the Competition Act 1998 (including references in provisions of the Enterprise Act 2002 applied by that Part) to the CMA are to be read as including a reference to the Authority (except in sections 31D(1) to (6) , 35C, 38(1) to (6) , 40B(1) to (4), 51, 52(6) and (8) and 54 of that Act and in any other provision of that Act where the context otherwise requires).
Before the CMA or the Authority first exercises in relation to any matter functions which are exercisable concurrently by virtue of subsection (2) above, that person shall consult the other.
Neither the CMA nor the Authority shall exercise in relation to any matter functions which are exercisable concurrently by virtue of subsection (2) above if functions which are so exercisable have been exercised in relation to that matter by the other.
It shall be the duty of the Authority, for the purpose of assisting a CMA group in carrying out an investigation on a market investigation reference made by the Authority (under section 131 of the 2002 Act) by virtue of subsection (2) . . . above, to give to the group —
and the group shall, for the purposes of carrying out any such investigation, take into account any information given to them for that purpose under this subsection.
In subsection (7) "CMA group" has the same meaning as in Schedule 4 to the Enterprise and Regulatory Reform Act 2013.
If any question arises as to whether subsection (2) or (3) above . . . applies to any particular case, that question shall be referred to and determined by the Secretary of State; and no objection shall be taken to anything done under—
by or in relation to the Authority on the ground that it should have been done by or in relation to the CMA .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In making any decision, or otherwise taking action, for the purposes of any of its functions that—
the Authority must have regard to the need for making a decision, or taking action, as soon as reasonably practicable.