The way the Brits look at some elements of personal demeanor and the way we look at the same thing is different. They also have a totally different sense of personal privacy.
To a degree the Brits are more alien to us than are the Iraqis.
The best thing all around is to keep Brit officers away from Americans of all ranks. This will minimize the conflict since it's usually the Brit officers who first decide to become cheeky.
I have served with British Officers, and have found them to be nothing but professionals of the highest order.
I wish I could say the same about some officers from our own Army.