At New York, British Airways have a half share in their own terminal which makes for a much quieter experience on the ground. Checkin has two ranks of desks for the riffraff, and on the left is a separate area for business. Behind this is the area for First and Golds, who have their own security checkpoint that leads to the Concorde Room. Then if you double back up the small escalator (which also leads to the United lounge) there is a reception desk for the BA lounge at the top. First (Golds, and one world Emerald) are on the left.