BR Mk 1 Brake Corridor Second 35468 (99953)
From SVR Wiki
The NRM’s support coach 35468 was built as a Brake Corridor Second at Wolverton in 1963. It carried the later number 99953 when visiting the SVRSevern Valley Railway in September 2016 as the support coach for 60103 Flying Scotsman.
- Railway Heritage Register Carriage Survey