A big part depends on the load. I've been fortunate to have had 2 upgrades this year with BA, 1st Stuttgart - Heathrow which was a full flight and moved to Club Europe whilst boarding. I was the first to check in, and only a blue exec member. Then 2 weeks ago at Bangkok for flight back to Heathrow. Checked in 4 hours before flight, and got upgraded to WTP as flight was overbooked in WT. I would expect that with BA's current financial situation, upgrades will be more or less where they have to, even if I do work in the industry.... It does do my head in when I see silver / gold members moaning as they are not getting a complimentary upgrade! I did notice on BKK-LHR flight that even after boarding, there was a screw up, and they head hunted certain pax from the CW cabin and moved them to first.