That's a bit unfair to the BA lounge... It's a lot smaller, but often less crowded than The Wing. It has all the facilities of the Wing except the restaurant and the cabanas... so if you just want somewhere peaceful to work for a couple of hours between 9am and 5pm I would go for the BA lounge, particularly if my flight was leaving from that side of the airport. This is even more true if you only have business class access to either.