sky9: The baggage allowance for BA is 23kgs in WT and WTplus.
At what weight to they start charging excess baggage?
If you're flying on a route on which the allowance is 23 kg, then they can start charging excess baggage at anything over 23 kg. But IME BA will usually let a few extra kg go. However, excess baggage charges, like seat allocation, is one of the areas in which check-in staff can get their own back on rude/stroppy customers. Being polite and charming is always a good idea when checking-in; it's even more important if you think you may have to slide a few (or even more than just a few) kg of extra baggage onto the aircraft.
