Moderator: Flying Blue (Air France & KLM), France and TravelBuzz!
Join Date: Jan 2001
Location: Paris, France, AF F+ Rouge pour toujours, Flying Blue whatever, LH FTL, HHonors Gold, formerly proud SCC Executive, now IC Ambassador, BA down to nobody, Grand Voyageur Le Club
Posts: 12,509
I've had some transfers between LHR and LGW, including one when the National Express coach tried to take back roads, without any success. So, I would tend to agree that if you don't want, as a passenger, to be extremely stressed during your incoming flight and the connection, 4 hours would be an adequate MCT.