BR 10504 Mk 3a Convertible Sleeper with Pantry Built 1981
| Present Location |
Carlisle Upperby |
| County Location |
Cumbria |
| Designed For |
BR |
| Build Location |
Derby |
| Built By |
BREL |
| Diagram Number |
7 / AS403 |
| Lot Number |
30960 |
| Type |
SLEP |
| First Number |
10504 |
| Present Number |
10504 |
| Gauge |
4ft 8 1/2in |
| Wheel Arrangement |
4-w bogies |
| Original Underframe |
Yes |
| Additional Notes |
By 02/22: stored for Locomotive Services Ltd on Severn Valley Railway at Kidderminster. By 06/26: moved from Kidderminster to Locomotive Storage Ltd facility at Carlisle Upperby. |
| Owner |
Locomotive Services Ltd |
| Rarity |
Many |
| Importance |
No Immediate Importance/Not Applicable |
| Storage |
Secure Open |
| Operational |
Yes |
| At Risk |
No |
| Scrapped |
No |
| Record Last Updated |
13/08/2026 |
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