Cant see a Riley, but the third car with engine on a pallett was definateley a Delahaye, the property of the late Barry Burnett. lovely shape was severly tempted by this one. had surface rust all over, possibly fire damaged?.
Nearest the camera is an Armstrong-Siddeley 16 or 18 from just post WW2, and the other side of the Riley is a Lea-Francis 12 or 14 from the same period. Not sure about the next one, Delahaye?