After arriving we were all taken out to the waiting shuttle that would take us to customs. There are several cars attached. You want the car farthest away, this will become the lead car. It will end up being closest to the building when you arrive. This means you will be at the forefront of the people getting in line for customs. Once in line, you can look back, way back, at those that were in the last car!
When leaving, I had a new experience. Not sure if this was United policy, Scotland policy or something new? Anyway, my boarding pass had a special code. This meant that I was given an additional security screening just as I was going to board. Taken to another line with others and had my hand bag and shoes searched. Then swipes taken of bag and my clothing. A residue check I suppose? My wife had no idea where I was or what happened to me! No argument with the additional check, maybe somehow inform your companion what is going on. I advise to comply nicely and don't argue. Duh!