I arrived at Belfast a couple of hours before my flight back to LHR. I informed check in that my mate was not going to be travelling home with me - same PNR. I asked if there was any possibility of getting on the earlier flight. Check in said no, and thanked me for letting them know about the no show. Whilst leaving the desk, they called me back, and said that since I had helped them out they could get me on the earlier flight! Happy days - extra 10tp's and lounge access to watch Andy win the tennis. My original flight was overbooked and they got me home an hour earlier which was great.