Speedy G,
There were six of us in all and I believe two actually made it through. Its my second attempt applying.
Useful info - know your stuff on BA, such as who their alliances and competitors are. Know EXACTLY why you want to be a pilot and know your application form back to front! Also get loads of books on interview techniques, it makes all the difference how you project yourself.
Best of Luck, I'm sure you will be fine!