GNR Class O1

The Great Northern Railway (GNR) Class O1 was a class of two-cylinder 2-8-0 steam locomotive designed by Sir Nigel Gresley for heavy freight work and built by the GNR between 1913 and 1919.
==History==
Gresley designed the O1 2-8-0 for the heavy coal trains on the mainline from Grantham to London, ordering five examples 1913, which were completed at Doncaster in 1914. A further fifteen were ordered in January 1916, but due to the First World War delays were incurred and construction was transferred to the North British Locomotive Company, who delivered the first ten in April 1918, followed by a further five in October and November 1919.
==Stock list==
Year 	Order 	Manufacturer 	Serial Nos. 	Quantity	GNR Nos.	LNER Nos.	LNER 1944 Nos.	Notes
1913–14	EO 274	Doncaster Works 	1411–1413, 1415, 1418	5 	456–460 	3456–3460	3475–3479 	
1919 	– 	North British Locomotive Co.(Hyde Park Works)	22060–22069 	10 	462–471 	3462–3471	3480–3489 	
1919 	– 	North British Locomotive Co.(Atlas Works) 	22099–22103 	5 	472–476 	3472–3476	3490–3494 	
The class was re-designated O3 by the London and North Eastern Railway in 1944.
== British Railways==
Seventeen examples survived into British Railways ownership in 1948, but all had been withdrawn by 1952.
===Withdrawal===
Year	Quantity in service at start of year	Quantity withdrawn	Locomotive Nos. 	Notes
1947	20 	3 	3487, 3490, 3492 	
1948	17 	2 	3489/94 	
1949	15 	0 	– 	
1950	15 	1 	63491 	
1951	14 	10 	63475/77–81/83/85–86/93	
1952	4 	4 	63476/82/84/88 	
==External links==
*LNER encyclopedia
Category:Scrapped locomotives
Category:2-8-0 steam locomotives
Category:2-8-0 locomotives
Category:Steam locomotives
Category:Tender locomotives
Category:Standard gauge locomotives
Category:Standard gauge steam locomotives of Great Britain
Category:Doncaster Works locomotives
Category:North British locomotives
Category:Freight locomotives
Category:Gresley locomotives
Category:Gresley Designs
Category:Locomotives
Category:Built in 1913
Category:Built in 1914
Category:Built in 1919
Category:LNER locomotives
Category:Great Northern (UK) locomotives
Category:Scrapped steam locomotives