12. Nothing in this Order shall prejudice or affect the rightsof—
(a)any public gas supplier, within the meaning of Part 1 of the GasAct 1986(1), or
(b)Northumbrian Water Limited,
in any apparatus belonging to them or for the maintenance of whichthey are responsible, or any structure for the lodging therein ofapparatus, being any apparatus or structure situate under, over or uponlands in or upon which the railways are constructed.