Steam locomotives of British Railways

British Railways was created on 1 January 1948 principally by the merger of the "Big Four" grouped railway companies: the Great Western Railway (GWR), the London, Midland and Scottish Railway (LMS), the London and North Eastern Railway (LNER) and the Southern Railway (SR). It inherited a wide legacy of locomotives and rolling stock, much of which needed replacing due to the ravages of World War II.

A wide variety of locomotives was acquired from the four major constituent companies. These had generally standardised their own designs. See:

• Locomotives of the Great Western Railway

  specifically List of GWR locomotives as of 31 December 1947[1]

• Locomotives of the Southern Railway

  specifically List of Southern Railway locomotives as of 31 December 1947[2]

• Locomotives of the London, Midland and Scottish Railway

  specifically List of LMS locomotives as of 31 December 1947[3]

• Locomotives of the London and North Eastern Railway

  specifically List of LNER locomotives as of 31 December 1947[4]

In addition, a handful of locomotives were inherited from minor constituents.

The 1948 Locomotive Exchange Trials compared locomotives from each company against each other.

After initially using letter prefixes (E for ex-LNER, M for ex-LMS, S for ex-SR, and W for ex-GWR locomotives, as used for other inherited rolling stock), a numbering scheme was decided on in March 1948. Generally ex-GWR locomotives retained their numbers (and hence were able to retain their cast brass number plates) and it was decided to add 30000 to the Southern numbers, 40000 to the LMS numbers and 60000 to the LNER numbers. There were some exceptions though.

BR adopted a slightly modified version of the LMS classification system, itself based on the Midland Railway's system. Each locomotive class was given a number 0–9 that signified its power, 0 for the least powerful and 9 for the most, with a suffix of F or P, indicating freight and passenger roles respectively. Freight power ranged from 0–9, passenger from 0–8. Many locomotives were used for both roles, in which case they were given two class numbers, the P-rating first e.g. 3P4F or 6P5F. A slight change from the LMS system saw those where the freight classification (x) equalled the passenger classification (also x) reclassified as xMT, MT standing for mixed-traffic, e.g. for the LMS Black Five locomotives, LMS 5P5F became BR 5MT. Mixed traffic locomotives had power in the range of classes 2–6.

553 ex-WD Austerity 2-8-0s were acquired from the War Department. 90035 was one of them.

In addition to the inherited and new-build locomotives, B.R. also purchased 620 locomotives of three types from the War Department. These had been in use on railways in Great Britain and elsewhere in Europe during the Second World War. For two of these types, BR was adding to two classes it already had. BR had inherited 556 ex-LMS Stanier Class 8F 2-8-0s, and added 39 in 1949 and an additional three in 1957, bringing the class total to 666. Additionally, it had acquired 200 ex-LNER Class O7 2-8-0s of the WD Austerity 2-8-0 type, to which it added another 533 examples. The ex-LNER locomotives were later renumbered from the ex-LNER 6xxxx series into the BR series as 90000-90100, 90422-90520. The third type, of which it had no other examples, were the 25 of the WD Austerity 2-10-0s. Of the eight WD ex-LMS Fowler Class 3F 0-6-0Ts exported to France, the five survivors were repatriated in 1948, and resumed their original numbers in the sequence of LMS Fowler Class 3F locomotives (albeit with the additional 40000 that identified ex-LMS locomotives under BR ownership). The ex-WD Hunslet Austerity 0-6-0STs were ex-LNER Class J94 locomotives and are included in the total of LNER locomotives inherited.

Initially, the newly nationalised network continued to be run as four different concerns, and pursued the policy of building of well-established designs. Some of these were already quite old, one class (the J72 tank engines) being a Pre-Grouping design.

GWR designs

94XX class pannier tank, built by BR.

Great Western management was opposed to nationalisation and built many pannier tanks, resulting in a surplus of them. 452 locomotives were built to ex-GWR designs, of which 341 were pannier tanks.

Class	Numbers	Power Classification	Wheel Arrangement	Number Built	Dates Built
1500	1500–9	4F	0-6-0PT	10	1949
1600	1600–69	2F	0-6-0PT	70	1949–51, 1954
9400	3400–9, 8400–99, 9410–99	4F	0-6-0PT	200	1949–56
2251	3218–9	3MT	0-6-0	2	1948
5101	4160–79	4MT	2-6-2T	20	1948–9
5700	6760–79, 9662–82	3F	0-6-0PT	41	1948–50
6959 "Modified Hall"	6981–99, 7900–29	5MT	4-6-0	49	1948–50
4073 "Castle"	7008–37	7P	4-6-0	30	1948–50
7400	7430–49	2F	0-6-0PT	20	1948, 1950
7800 "Manor"	7820–9	5MT	4-6-0	10	1950
Total				452	1948–56

LNER designs

BR-built LNER Thompson Class B1 61306 at Leeds City in 1966 or 1967.

J72 Class 69023 Joem visits the Colne Valley Railway

BR built 396 locomotives to LNER designs. The J72 Class was a North Eastern Railway design, dating from 1898.

Class	Numbers	Power classification	Wheel arrangement	Number built	Dates built
A1Peppercorn A1	60114–62	8P6F	06424-6-2	49	1948–49
A2Peppercorn A2	60526–39	8P7F	06424-6-2	14	1948
B1Thompson B1	61273–409	5MT	06404-6-0	136	1948–52
J72J72	69001–28	2F	0600T0-6-0T	28	1949–51
K1Thompson/Peppercorn K1	62001–70	6MT	06202-6-0	70	1949–50
L1Thompson L1	67702–800	4MT	0624T2-6-4T	99	1948–50
Total				396	1948–52

From 1951, BR started to build steam locomotives to its own standard designs intended to succeed a disparate number of pre-grouping engines. They were largely based on LMS practice but incorporating ideas and modifications from the other constituent companies and America. Their design was overseen by Robert Riddles.

Characteristic features were taper boilers, high running plates, two cylinders and streamlined cabs.

Although more were ordered, 999 BR "Standards" were constructed: the last, 92220 Evening Star, was built in 1960. Most never achieved their potential service life and were withdrawn in working order.

Riddles put his case for continuing to build steam locomotives in his presidential address to the Institution of Locomotive Engineers in November 1950. He compared capital costs to show that steam was cheaper than the alternatives, though he didn't mention productivity differences, except to say fuel costs did not rank very high relative to total costs. For example, a Class 5 cost £16,000, compared to £78,100 for a 1,600 h. p. diesel, £138,700 for a gas turbine, or £37,400 for electric. He calculated the costs per drawbar horse power as £13 6s (steam), £65 (diesel), £69 7s (turbine) and £17 13s (electric).[5] Riddles retired in 1953.

Class	Numbers	Power classification	Wheel arrangement	Quantity built	Years built	RA	Tender types	Image
Class 7 (Britannia)	70000–054	7P6F	06424-6-2	55	1951–54	8	BR1, BR1A, BR1D
Class 8 (Duke of Gloucester)	71000	8P	06424-6-2	1	1954	8	BR1E until 1957, BR1J thereafter
Class 6 (Clan)	72000–009	6P5F	06424-6-2	10	1952	8	BR1
Class 5	73000–171	5MT	06404-6-0	172	1951–57	7	BR1, BR1B, BR1C, BR1F, BR1G, BR1H
Class 4 4-6-0	75000–079	4MT	06404-6-0	80	1951–57	4	BR2, BR2A
Class 4 2-6-0	76000–114	4MT	06202-6-0	115	1952–57	4	BR2, BR2A, BR1B
Class 3	77000–019	3MT	06202-6-0	20	1953	4	BR2A
Class 2	78000–064	2MT	06202-6-0	65	1952–56	3	BR3
Class 4 Tank	80000–154	4MT	0624T2-6-4T	155	1951–57	5	—
Class 3 Tank	82000–044	3MT	0622T2-6-2T	45	1951–53	4	—
Class 2 Tank	84000–029	2MT	0622T2-6-2T	30	1953–57	3	—
Class 9F	92000–250	9F	10202-10-0	251	1954–60	9	BR1B, BR1C, BD1F, BR1G
Total				999	1951–60

Initially, BR decided upon blue for the largest passenger types, with GWR-style Brunswick green for passenger locomotives, and LNWR-style lined black for mixed-traffic locomotives. The blue however was quickly dropped and passenger livery for all locomotive classes reverted to green. Towards the end locomotives tended to be painted in lesser liveries, and often this was covered in a layer of grime.[6]

Two logos (or crests) were used during the period. The first logo (1948–1956) was the "Lion and Wheel" (sometimes nicknamed the "Cycling Lion"), showing a lion standing over a spoked wheel upon which the words "British Railways" were displayed.[7] The second logo (1956–1965) featured a lion holding a wheel (which gave rise to the nickname "ferret and dartboard"), sitting in a crown, with the words "British" and "Railways" to left and right. (Passenger stock and certain diesel locomotives used a roundel variant, where the words "British Railways" were in a ring surrounding the crest.)[8] From 1965, the BR Corporate Image and "Double Arrow" logo was adopted, but this logo was not applied to steam locomotives (except on the Vale of Rheidol line).

Certain classes of steam locomotives were barred from working south of Crewe with effect from 1st September 1964 due to clearance issues with the new overhead electrification. Those locomotives affected had a broad yellow band painted diagonally across their cabsides to denote this prohibition.[9]

The 1955 Modernisation Plan called for the phasing out of steam traction. Major withdrawals occurred during 1962–1966, and steam traction ended in August 1968, coinciding with the Beeching Axe.

Some tank engines were sold to London Transport, where steam traction remained in use until 1971. Steam on industrial lines remained until the 1980s.

With regular maintenance, British steam locomotives typically lasted for approximately 30 years of intensive use, before major components would need to be replaced or overhauled. For a steam locomotive built in 1960, the economic lifespan would have led to it being withdrawn in the 1990s.

The locomotives of the Vale of Rheidol Railway, from the 2 ft narrow gauge Vale of Rheidol Railway (VoR) in Mid-Wales, had been inherited with the rest of the GWR stock in 1948. BR however continued to use steam locomotives on the line as a commercial heritage railway. This situation continued until 1989 when the line was privatised, and steam continued. These engines were the only steam locomotives to receive the Rail Blue with double arrow livery.

Withdrawn locomotives were sent for scrap to various locations around the United Kingdom, either to the railway workshops at Brighton in Sussex, Crewe in Cheshire, Darlington in County Durham, Doncaster in South Yorkshire and Swindon in Wiltshire, etc.; or to scrap metal merchants who had been approved to bid on the contracts – these included Woodham Brothers scrapyard in Barry, Vale of Glamorgan, South Wales, which became a centre for the UK railway preservation movement.

Former main line locomotives, along with various smaller industrial shunters, form the backbone of steam motive power for heritage railways. Main line running on charter trains is possible and they run under TOPS code as Class 98.

For a list of Diesel and Electric locomotives of British Railways:

• List of British Rail classes
• Motive power depot
• List of British Railways shed codes

Wikimedia Commons has media related to Steam locomotives of the United Kingdom.

• Hugh Longworth British Railway Steam Locomotives 1948–1968, Ian Allan. ISBN 0-86093-593-0