Ignore it, unless you carry a balance (which on those cards you really shouldn't ever), it has no material impact. I have several UK credit cards, I have no idea what the APRs are any more, they move around, but I don't carry balances (well, except for an exceptionally large amount I was somehow able to get approved for last year at 0% with zero fees, which seemed to make a welcome return, and store the resultant cash in 5%+ savings accounts, but that's just something for me to track in terms of making monthly payments until the 0% runs out - incidentally this makes my UK credit file look like I'm up to my eyeballs in debt and maxed out on several cards, so I won't be getting approved for anything else in a while, but it's pulling in ~$700 per month in interest, so...meh, problem for another day).
Your UK BA Amex - is that registered at a UK address? Because my understanding is that if it isn't, Amex won't sent the Avios to BAEC until it is? I don't currently hold that card, and never have outside of a UK address, so I have no idea - I've had UK MR cards registered to Aussie addresses which worked fine (although note recent T&C change), but atm I only have a UK Platinum, and only because they offered 100k MR to upgrade from the ARCC (free MR card)...was meant to be a Gold only offer, but despite holding a Gold (at the time), they would only let me apply the offer to ARCC, such is life.