Andrew Barclay 371

Andrew Barclay have been building railway rolling stock since 1840 and still exist today as part of Wabtec. They are probably best known for shunters, building hundreds of steam, diesel and fireless shunters for various railway companies and industrial users. AB 371 from 1945 was one of a number of diesel mechanical shunters built for the British Army to a standard design as Army 235.

Information
Built: 1945
Builder: Andrew Barclay
Engine: Gardner 6LX diesel
Power: 150 hp (112 kW)
Wheel arrangement: 0-4-0

Army 235 served with the Army for decades, being situated at depots at Bicester, Eskmeal, Morton-on-Lugg and finally Long Marston [1] into the 1980s. After leaving service 235 spent some time as a static exhibit at the National Army Museum before being transferred to the Isle of Wight Steam Railway in the 2000s where it now works as part of the engineering fleet.
Army 235 at Havenstreet
A similar shunter, AB 376 built 1948, worked for British Gypsium, now preserved at Tyseley

[1] Ray King, British Industrial Diesel Locomotives (Traction & Rolling Stock Advertiser, 2006) p. 11