Boy, I'm with you on the jet lag thing.  Some folks are more vulnerable to it than others; I, like you, find it a special kind of torture.  Even an hour of jet lag to Chicago sets me back a day.  It absolutely stuns me that you have never been to England.  You need to ask Your MoM to connect you with Jane.  When we visited years ago with the kids we had a wonderful dinner with them, you would enjoy meeting her.