Originally Posted by
tenmoc
But being in England he is afraid he'll have foreign transaction fees on his AA credit card and therefore thinking about going with BA instead.
Go ahead and tell your brother to get the AA Citi card for the 40k miles if he can spend $1000 in the US on it before he goes, or is willing to eat the $30 in FOREX charges, which really is totally worth 40k miles.
Then apply for the
AA card in the UK. It only has a 5k signing bonus, but he'll earn 1.5 points per pound on purchases and 3 per pound on gas.