Well OK I should have worded it better, not compensation but a flight voucher etc. I get offered a BA Gold Card each year but decline it, I prefer the bonus miles I earn when I reach AA plat.

OK let's say I am bumped down, instead of any financial compensation am I entitled to flight coupons say as a free return ticket etc, or is that what they tend to give and is it generally in the same class?

Oh my apologies for not adding, I am flying JNB-LHR on BA in J.