Maybe it would be good policy to have one overtly British option (such as shepherds pie), and one that isn't (such as chicken tikka)? Just to balance it out. I can see a lot of international travellers in WT being a little confused by a menu such as that.

BA's marketing overseas often uses all the usual suspects when it comes to London's imagery simply because that's what people like to see/expect. Maybe honing that a bit more with the menu would be a good idea?