CASTELL DINAS BRAN, 25035 was built at Darlington as D5185 on 25th May 1963. Initially located at Toton and worked on the L.M.R. until 1972 when it was transferred north to Holbeck depot at Leeds. After a short stay there it went to Tinselly in Sheffield.
In 1975 it travelled north again to Haymarket Edinburgh. Its final home depot was Crewe from where it regularly operated over the Cambrian lines. Condemned on 15th March 1987, the day after it became the last member of its class to haul a passenger train on B.R. when it substituted for a failed class 47 and hauled the 07:09 Holyhead - Cardiff between Chester and Crewe. Arrived at Pitsford on 14th July 1988.
25035 bears the joint distinction of being the oldest of the class in preservation and the last main-line locomotive to be built at Darlington.
A full review of the Class 25 is given in Sulzer Diesel Locomotives of British Rail by Brian Webb.

25035 in fake Western Region maroon livery.
| Builder | Darlington Works |
|---|---|
| Built | 25th May 1963 |
| Class | Class 25/1 |
| Works Nº | D5185 |
| Ex BR Nº | 25035 |
| Diagram | 25 1av |
| Wheel Arrangement | Bo-Bo |
| Driving wheels | 3' 9" diameter |
| Weight | 73 ton 15 cwt |
| Engine | Sulzer 6 cylinder 6LDA 28-B 1250 b.h.p. at 750 r.p.m. |
| Tractive effort | 45,000 lbs. |
| Transmission | Electric. 4 A.E.I 253 AY nose-suspended traction motors. |
| Overall length | 50ft 6in over buffers |
| Fuel Tank capacity | 500 gallons |
| Water Tank | 580 gallons |
| Maximum Speed | 90 m.p.h. |
| Made Redundant | 15th March 1987 |
| Date Preserved | 1988 |
| Current Condition | Undergoing major bodywork repairs on the Great Central Railway |
| Arrived NLR | 14th July 1988 |
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Last Amended: 22-Apr-2006
Copyright © Northampton & Lamport Railway 1996-2006