I also found it a bit hard to believe that the crew got all the way to Manchester before they realised the mistake. OK they may not know where the hospital is, but they would have had some idea that Brentwood is in the Greater London Area. Alarm bells should have started ringing when the reached the M25. And didn't LAS wonder what had happened to their ambulance, and the hospital wonder where there pateint was. Sorry to be cynical, but would love to know how much of this story is true, and how much is hype. btw, my sister-in-law once tried to drive from London to Manchester but ended up in Brighton. That was without the assistance of sat nav.