Crossing a red runway stopbar for an aircraft unescorted is a complete no-no at LGW. We would supply a leader vehicle for this as a major priority, even to the extent of getting the Duty Manager out doing it (I did a couple of hours of it myself a week or so ago). Taxiway traffic bars MAY be crossed in the circumstances already highlighted i.e. if the GMC person has full view of the situation. Yes, do please keep hammering away with the faults, we need the information.
discountinvestigator,
As ever, a very lucid view, well put.
TheOddOne