37411 Caerphilly Castle arrives at Quainton Road with the Pathfinder Tours 'Bard'n'Birch' railtour on 17 February 2007, now running as 1Z38 13:00 Stratford-on-Avon to Quainton Road. The booked lengthy stop at Calvert Junction was ignored (as I suspected), and I could here the train approaching as I walked up the slope to the bridge. At least the tour participants got some extra time to look around the Buckinghamshire Railway Centre.