Further digging into the history of the bogie well wagon reveals it to have been ex British Steel Corby, No.66, which moved to Buckinghamshire Railway Centre in 1982 as one of five bogie bolster wagons sold to be used in an ITV series called ‘Jewel in the crown’. No.66 was subsequently converted at BRC to carry boilers, moving to the North Norfolk Railway in 2010. It seems certain to be a GWR Macaw B (or BR built derivative). The link below may be of interest to those wishing to read more on this wagon: