In the days when we had an integrated railway, a failed HST would usually result in a loco being placed on the front, rather than just canceling the train, as happens for virtually any kind of unexpected fault nowadays. 47816 is pictured passing Compton Beauchamp on 3 May 1995 with an unidentified failed HST, possibly the 1B50 17:30 Paddington to Carmarthen service.