That's fine when the NAT Tracks are to the North - But, they aren't always - Sometimes the Jet-stream favours Southerly Nat Tracks via Lands End(Cornwall) or Via Strumble (South West Wales).
IE. Not all Traffic to the USA goes via Scotland everyday!
Oh, so not quite as we know it, Jim? No matter. Spread the joy as someone said in 2008! London to NAT Enterprise, your UK-US passengers have all reported ready using the red button on their home/office remotes. Transporter room are you there? Beam 'em up, Scottie!
Hey Scottie, ("yes Captain?"), Is that right you were a NATS radar engineer in the old days?
I do so hope I get to use one of those transporter things before I die. Don't you just hate traffic jams and sweaty trains and buses?