Not to enter on private land without consent

Provided always that nothing herein shall authorize or empower the said Company to lay down or place any pipe or other works into, through or against any building or in any land not dedicated to public use, without the consent of the owners and occupiers thereof, except that the said Company may at any time enter upon and lay or place any new pipe in the place of any existing pipe in any land wherein any pipe hath been already lawfully laid down or placed in pursuance of this Act, and may repair or alter any pipe so laid down.