Apparatus of statutory undertaker in stopped up streets
355. Notwithstanding the temporary stopping up or diversion of any street under the powers conferred by article 13 (temporary stopping up of streets, public rights of way and access land), Northern Gas Networks is at liberty at all times to take all necessary access across any such stopped up street and to execute and do all such works and things in, upon or under any such street as may be reasonably necessary or desirable to enable it to maintain any apparatus which at the time of the stopping up or diversion was in that street, subject always to the undertaker’s unimpeded ability to carry out the works.