From some points of view this is a difficult time to be giving a general talk on supersonic civil transports. The pioneering period is over, and the really interesting lectures when bright new ideas and shapes were discussed have mostly all been given. The design of the Anglo-French “Concord” is now pretty well settled and a fair amount of information about it has been made public. The information which has not been made public is withheld for obvious reasons of commercial security, and I am therefore caught between not giving too much away on the present Concord and repeating a lot which has already been said.