002/185 should be doing the following today, assuming Realtimetrains is correct. I know the first one definitely is as I saw them at Dawlish this morning.
05:05 Penzance to 10:03 Paddington (1A75)
11:03 Paddington to 14:21 Plymouth (1C78)
15:00 Plymouth to 18:16 Paddington (1A91)
19:03...