The NER Class R (later, LNER Class D20) was a class of

4-4-0 4-4-0, in the Whyte notation, denotes a steam locomotive with a wheel arrangement of four leading wheels on two axles (usually in a leading bogie), four powered and coupled driving wheels on two axles, and no trailing wheels. First built in the ...

steam locomotive A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, Fuel oil, oil or, rarely, Wood fuel, wood) to heat ...

, designed by

Wilson Worsdell Wilson Worsdell (7 September 1850 – 14 April 1920) was an English locomotive engineer who was locomotive superintendent of the North Eastern Railway from 1890 to 1910. He was the younger brother of T.W. Worsdell. Wilson was born at Monks C ...

for the North Eastern Railway. They passed to the

London and North Eastern Railway The London and North Eastern Railway (LNER) was the second largest (after London, Midland and Scottish Railway, LMS) of the "Big Four (British railway companies), Big Four" railway companies created by the Railways Act 1921 in Britain. It ope ...

(LNER) in 1923. In 1936, some were rebuilt with long-travel

piston valve A piston valve is a device used to control the motion of a fluid or gas along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder. Examples of piston valves are: * The valves used in many brass instruments * ...

s and classified D20/2. The unrebuilt locomotives were re-classified D20/1.

Numbering

Forty-six D20/1 and three D20/2 locomotives passed to

British Railways British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most rail transport in Great Britain from 1948 to 1997. Originally a trading brand of the Railway Executive of the British Transport Commis ...

in 1948 and they were numbered 62340-62397 (with gaps).

Preservation

The last D20 was withdrawn in 1957 and none were preserved.

References

External links

D20/1
''Rail UK''
D20/2
''Rail UK''
The W.Worsdell Class D20 (NER Class R) 4-4-0 Locomotives
''LNER Encyclopedia'' R 4-4-0 locomotives 2′B h2 locomotives Railway locomotives introduced in 1899 Scrapped locomotives Standard-gauge steam locomotives of Great Britain {{England-steam-loco-stub Passenger locomotives