Originally Posted by
Mordac
BA AMEX BoB purchases will not register as a BA purchase for bonus Avios, unbelievably. Or at least, they did not for me!
you earn at your standard rate, it isn’t a flight or a holiday as AMEX T&C specify... for example the premium card states ‘an additional 1.5 Avios for every £1 spent on purchasing British Airways flights and holidays directly via the British Airways website (so 3 Avios for each £1 spent in total on these purchases).’