An ex-works 50 021 at BREL Doncaster on the 17th June 1978. The locomotive received the name Rodney on the 31st of the following month at Laira depot; it is possible that this was directly after the machine was released from this Doncaster Works visit.
| 50 021 | |
| Previous Identity (s) | D421 |
| Introduced | May 1968 |
| Withdrawn | April 1990. Now preserved |