I know that British Airways do not use the 747 on this route but i wanted to do a flight in it and i was very restricted for time with the people who did it with me, I flew from EGLL - EGCC , it was a nice flight i got a bit confused with a LNAV checkpoint as u can tell on takeoff, It only took about half an hour but was a great community thing. Here is the link
ps: i am not a pro timelapse editor but i tried my best