4th December 2018 GWR 2+4 HST 'Castle' set climbs to Whiteball Tunnel on Wednesday 4th December 2018 while operating a series of staff training runs between Plymouth and Taunton. No.43040 and No. 43016 'Powderham Castle' operate the 5Z62 12:15 Plymouth - Taunton with trailer set GW02 in the formation. (Photo: Simon Harling)