Uploaded December 2020 | Updated September 2026, 3 weeks ago
Ever wondered why a Class 37 is a Class 37, or a Class 66 is a Class 66? Unlock the secrets of the UK's diesel and electric loco running number system and ask your questions live.
Ever wondered why a Class 37 is a Class 37, or a Class 66 is a Class 66? Unlock the secrets of the UK's diesel and electric loco running number system and ask your questions live.










