Originally Posted by
M.Mouse
Might that be in retaliation for the procedures and implementation thereof the USA adopted for incoming visitors and crew members following the tragedy of 9/11?
It would certainly be expected after such an event. As far as I know, outgoing crews go through normal screening on departure from the US. The crew screening for outbound crews is totally different at Heathrow. Many of my fellow crew members choose to go through passenger screening at Heathrow simply because it's less intrusive.