BALaddy, let me tell you that you're talking rubbish!
Everyone on here thinks that when a large carrier operates a marginal route it's a "slot holder". LGW slots are not that hard to come by when compared to the likes of LCY or LHR so they wouldn't operate this route for the sake of it.
BA seem to be doing very well, I was on it the other week and there was about 90-100 on board.