| C W S | 01332 366921 | | Downing Road , West Meadows Industrial Estate , Derby, DE21 6HA |  Map & Directions |
| Ecclesbourne Valley Railway | 01629 823076 | | Station, Wirksworth, Matlock, DE4 4FB | | Map & Directions |
| Serco Rail Operations Ltd | 01332 262626 | | Derwent House, London Road, Rtc Business Park, Derby, DE24 8UP | | Map & Directions |
| Rail Accident Investigation Branch | 01332 253300 | | The Wharf, Stores Road, Derby, DE21 4BA | | Map & Directions |
| Merlin Rail Ltd | 01332 332222 | | Wyvern House, Railway Terrace, Derby, DE1 2RU | | Map & Directions |
| Balfour Beatty Rail Projects Ltd | 01332 262666 | | 1 Nelson Street, Derby, DE1 2SA | | Map & Directions |
| M T R Training | 01332 242212 | | Brunel House, London Road, R T C Business Park, Derby, DE24 8UP | | Map & Directions |
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