Yes, Raffles noted that in a recent thread. I always found it very useful on night flight departures, when T1 immigration and security can be a bit chaotic. Given the number of GGLs on a given flight, it can't be much of a saving. Yes, I could pay it myself (and have in the past), but it's just one more small way in which BA seem to be going out of their way to alienate customers, one more small reason to use a competitor.