I don't know how Graham and I managed to get ourselves into this spot directly in front of Exeter Central signal box in full view of the signalman? With the glorious trio of shunting disk signals in the foreground, 50020 'Revenge' leaves St. David's station with the 1M39 09.32 Penzance to Wolverhampton service.
There is an audio recording of this event on my youtube channel, see...
https://youtu.be/SUcFbgXnVK0