Ummm... looking back in history, I see I've referenced a 10:30 start time elsewhere. Considering distances and opening times of pub, this would make much more sense. I'll update the original post.
Rowen, just taken a look at the trains. Pushing the start back 30 min gives you an extra hour, but the journey down is still over 3 hours. Perhaps they'll be a bitt more coöperative when I re-run this next month.