In 1840 Head and Wright founded a foundry at Thornaby in 1840 which became the Teesdale Iron Works. When Wright left the partnership, he was replaced by Ashby and the firm became Head, Ashby & Co. In 1860 Thomas Wrightson joined the firm and soon afterwards the firm became Head Wrightson & Co.
- Alexander Chaplin
- Andrew Barclay
- Aveling and Porter
- Avonside
- Bagnall
- Beyer Peacock
- Black Hawthorn
- Brush
- Coalbrookdale
- Cockerill
- E Borrows
- E.B. Wilson
- Fletcher Jennings
- Fox Walker
- Gibb and Hogg
- Grant Ritchie
- Hawthorn
- Haydock
- Head Wrightson
- Hudswell Clarke
- Hunslet
- Kerr Stuart
- Kitson
- Manning Wardle
- Markham
- Nasmyth Wilson
- Neilson
- North British
- Peckett
- Robert Heath
- Robert Stephenson (and Hawthorn)
- Sentinel
- Sharp Stewart
- South Durham
- Stephen Lewin
- Vulcan Foundry
- Wigan Coal
- Yorkshire Engine Company
- Crane Tanks
- Fireless Locos
- AEC
- ALCO
- Andrew Barclay
- Armstrong Whitworth
- Bagnall
- Baguley Ltd
- British Thomson Houston
- Brush
- Clayton
- Cockerill
- Consett
- Dietrich
- Drewry
- English Electric
- Express Service
- FC Hibberd and Co Ltd
- Fowler
- Gaston Moyse
- GEC Traction
- General Motors
- Hawthorn Leslie
- Howard
- Hudswell Clarke
- Hunslet
- ICI
- Jung
- Kent Construction
- Kerr Stuart
- Lake and Elliot
- MaK
- Mercury
- Motor Rail Ltd
- Noord
- North British
- Orenstein und Koppel
- Peckett
- RFS Engineering
- Robert Stephenson and Hawthorn
- Rolls Royce
- Ruston Hornsby
- Schoma
- Sentinel
- SVI
- Thomas Hill
- Tractive Power
- Vollert
- Vulcan Foundry
- Werkspoor
- Yorkshire Engine Company
- ACI Elevation
- AEG
- Baguley Ltd
- BemoRail
- British Thomson Houston
- Brush
- Clayton
- CPM
- English Electric
- Express Service
- GEC
- Greenwood and Batley
- Harmill
- Hawthorn Leslie
- Hunslet
- Kerr Stuart
- Niteq
- Robert Stephenson Hawthorn
- Schalke
- Sculfort
- Siemens
- Stored Energy Technology
- Vollert
- Wickham
- Windhoff
- Zephir
- Mather and Platt
| Wheel Arrangement | 0-4-0VBT |
| Length | Varies |
| Width | Varies |
| Height | Varies |
| Introduced | 1870 |
| Builder | Head, Wrightson & Company |
| Num Cylinders | 2 |
| Number | Altnumber | Name | Status | Note | Depot | Base | Owner | In Service | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coffeepot | P | 0-4-0VBT | PR | Beamish Museum | PRE | 1871 | ||
| 21 | 16 | Seaham Harbour No 16 | D | 0-4-0VBT | PR | Beamish Museum | PRE | 1870 | |
| 33 | 17 | Seaham Harbour No 17 | D | 0-4-0VBT | PR | Beamish Museum | PRE | 1873 |
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