BR Standard Class 5
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The British Railways Standard Class 5MT 4-6-0 was one of the 12 standard classes of steam locomotive built by British Railways in the 1950s. It was essentially a development of the LMS Stanier Class 5 4-6-0 ("Black Five"). 172 were built between 1951 and 1957.
William Stanier's Black Five had been the most successful mixed-traffic type in Great Britain. Construction of the Black Fives had started in 1934 and continued past nationalisation to 1951. A new set of 'standard' locomotives was to be built by British Railways, based on LMS designs and incorporating modern ideas.
In particular, the Standard design incorporated features designed to make disposal easier: a self-cleaning smokebox and a rocking grate removed the necessity for crews to undertake dirty and strenuous duties at the end of a long shift. 
Design and construction
The design work was done at the ex-LNER Doncaster Works but the bulk of the construction was done at Derby Works. The locomotive featured a BR standard boiler very similar in dimensions to the Stanier Type 3B fitted to the Black Fives, but made from manganese steel instead of nickel steel. The most obvious visible changes were a higher running plate, slightly enlarged driving wheels (from 6 ft 0 in (1.829 m) to 6 ft 2 in (1.880 m)), a standard cab with external pipework and the regulator gland on the driver's side of the boiler below the dome.
The first of the class, 73000, was outshopped from Derby in April 1951 and 30 were in service by January 1952. There was then a gap in construction before Derby resumed building its remaining 100 engines. 42 were built at Doncaster, starting in August 1955 and finishing in May 1957, with Derby's last engine following a month later.
Thirty engines, numbers 73125 to 73154, were built with Caprotti valve gear and poppet valves. One of these engines (73129) survives today at Butterley. It and 71000 Duke of Gloucester are the only engines with Caprotti gear left in Britain.
In 1959, 20 of the Southern Region locomotives were named, the names being transferred from SR King Arthur class locos that were then being withdrawn. These were:
- 73080 Merlin
- 73081 Excalibur
- 73082 Camelot
- 73083 Pendragon
- 73084 Tintagel
- 73085 Melisande
- 73086 The Green Knight
- 73087 Linette
- 73088 Joyous Gard
- 73089 Maid of Astolat
- 73110 The Red Knight
- 73111 King Uther
- 73112 Morgan Le Fay
- 73113 Lyonnesse
- 73114 Etarre
- 73115 King Pellinore
- 73116 Iseult
- 73117 Vivien
- 73118 King Leodegrance
- 73119 Elaine
73022 has also been photographed in service on the Southern Region, pulling a boat train across Canute Road in Southampton on 29 September 1966. This engine also starred in the BTC film Wash and Brush Up, showing the routine boiler washout and cleaning of the smokebox and ash screens every 12–16 days while in service. On completion of this, 73020 hauled the 12.10pm goods to Camden.
73114 Etarre has been photographed in service on 20 March 1966, pulling a boat train through Fareham while diverted due to electrification work on the Southern Region mainline from Southampton to London Waterloo.
73116 'Iseult' is seen, at the head of a Southampton boat train, in 'Terminus', the 1961 British Transport Film documentary directed by John Schlesinger which presents a "fly-on-the-wall" look at a day at Waterloo Station in London.
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Accidents and incidents
- On 25 August 1958, locomotive No. 73042 was hauling a sleeper car train which overran a signal and was in a head-on collision with a train formed from two electric multiple units at Eastbourne, East Sussex. Five people were killed and 40 were injured.
- In 1958, locomotive No. 73111 was hauling a passenger train that derailed at Millbrook, Hampshire due to a faulty point motor moving a set of points under the train.
Only five members of the class have survived into preservation and of the five only 73096 has operated on the mainline. 73096 is currently undergoing an overhaul at Southall and is being done to mainline standard.
|Number & Name||Tender Attached||Built||Withdrawn||Service life||Location||Livery||Status||Image|
|73050 "City of Peterborough"||BR1G||April 1954||June 1968||14 years, 2 months||Nene Valley Railway||BR Lined Black, Early Emblem||Stored, Boiler ticket expired in 2015, awaiting overhaul.|
|73082 "Camelot"||BR1B||June 1955||June 1966||11 years||Bluebell Railway||BR Lined Black, Early Emblem||Operational, Boiler ticket expires in 2025.|
|73096||BR1G||Nov 1955||Nov 1967||12 years||Southall Railway Centre||BR Green, late Emblem||Under Overhaul, Boiler ticket expired September 2011, being overhauled to mainline standard. Formerly based at the Watercress Line.|
|73129||BR1B||Aug 1956||Dec 1967||11 years, 4 months||Midland Railway - Butterley||BR Lined Black, Early Emblem||Static Display, Boiler ticket expired in 2016. One of only two engines left in Britain with Caprotti valve gear.|
|Nov 1967||10 years 10 months||Great Central Railway||BR Lined Black, Early Emblem||Under Restoration, Undergoing restoration from scrapyard condition which includes a new tender and motion, planned to be back in service in mid 2017|
- Terry Essery, Steam Locomotives compared, Atlantic Transport Publishers, ISBN 0-906899-65-6
- Clive Groom(Engineman).DVD ' The story of the Standard, Southern and Western engines. Go Entertainment (2011)
- South Coast Railways - Portsmouth to Southampton. Vic Mitchell and Keith Smith. 1986. ISBN 0-906520-31-2
- Bishop, Bill (1984). Off the Rails. Southampton: Kingfisher. pp. 76–77. ISBN 0 946184 06 2.
- A Detailed History of BR Standard Steam Locomotives, - Vol 2 - The 4-6-0 and 2-6-0 Classes. RCTS ISBN 0-901115-93-2
- Bradley, Rodger P. (1984). The Standard Steam Locomotives of British Railways. David & Charles. ISBN 0715383841.
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BR Standard Class 5MT.