31423 accelerates (if that's the right word for a Class 31 on eight coaches!) away from Wellingborough on 4 May 1987 with the 1C14 08:00 Nottingham to St Pancras service. This was running 15 minutes late, which isn't too bad for a 31/4 trying to keep to Class 45 timings. Even without the ETH being used, the electric heat conversion resulted in only about two thirds of the original loco's already modest power being available for traction.