28 July 1983 was a very hot day, so 47091 was definitely not the best choice of motive power for the 1S61 06:45 Paddington to Glasgow Central service. It probably wasn't too hot in the coaches when I photographed the train approaching Oxford North Junction at 08:20, but with no way for the loco to operate the air conditioning, and no windows to open, the passengers would soon be getting a bit warm!