6(1)Section 24 (4), in its application to an inner London borough, shall have effect as if references to the commencement of that Act were references to 1st April 1965 and as if at the end there were added the words “or
(c)any length which immediately before 1st April 1965 was used for draining any group or block of houses by a combined operation under an order of a metropolitan borough council or their predecessors ; or
(d)any length which immediately before that date was used for draining a group or block of houses by a combined operation, being a length laid or constructed before 1856 in pursuance of an order or direction of, or with the sanction or approval of, the Metropolitan Commissioners of Sewers.”
(2)Section 24 (5) shall not apply to an inner London borough, the City or the Temples.