My girlfriend and I were in the T4 F lounge last night waiting for BA9. Checked in our bags dead on 1900, in the lounge by 1925 ("Fast Track" wasn't, really) and the spa was already fully booked for the evening. :-( Shame as it's likely to have been the only time in my whole (and only) year of being gold that we could have used it. The lounge itself was very quiet until about 2030 after which it became pretty full very quickly.