The drains belonging to a highway—
vest in the council of the London borough in which the highway is situated or, if it is situated in the City in the Common Council, and where any other drain or sewer was, at the date when the highway became a metropolitan road, used for any purpose in connection with the drainage of that highway, that council shall have the right of using the drain or sewer for that purpose.
Any difference arising under this section—
shall, if either party to the dispute so elect, be referred to and determined by the Secretary of State.
Subsection (3)(a) above does not apply in Wales.