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GWR 6959 Class
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| Great Western Railway 6959 Class | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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6960 Raveningham Hall (now preserved) with a Didcot slow train, April 1957. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The Great Western Railway (GWR) 6959 or Modified Hall Class is a class of 4-6-0 type steam locomotive. They were a development by Frederick Hawksworth of Charles Collett's earlier Hall Class named after English and Welsh country houses.
Background
[edit]Although the GWR had been at the forefront of British locomotive development between 1900 and 1930, the 1930s saw a degree of complacency at Swindon reflected in the fact that many designs and production methods had not kept pace with developments elsewhere. This was especially true with the useful GWR 4900 Class, the design of which largely originated in the 1900s and had not fundamentally changed since the mid-1920s.[1] Charles Collett was replaced as the Chief Mechanical Engineer of the Railway by F.W. Hawksworth in 1941 who immediately created a modified version of the design, known as the 'Modified Hall Class'.
Design
[edit]The Modified Halls marked the most radical change to Swindon Works' practice since Churchward's time as chief mechanical engineer and was very far from a simple modification of the Hall design. 'Although in outward appearance it looked almost the same, nearly everything about it was new.'[2] Hawksworth's use of plate frames throughout the design was a break with Churchward's practice for 2 cylinder locomotives. The cylinders were cast separately from the smokebox saddle and bolted to the frames on each side. A stiffening brace was inserted between the frames and extended to form the smokebox saddle. The exhaust pipes leading from the cylinders to the blastpipe were incorporated into this assembly.
Additionally, Churchward's bar framed bogie which had been adapted for the original Hall prototype in 1924 was replaced by a plate frame structure with individual springing. There were changes, too, above the running board. Hawksworth decided that the declining quality of coal reaching Great Western depots necessitated a higher degree of superheating. A larger three-row superheater and header regulator were fitted into Swindon No.1 boiler. Improvements were subsequently made to the draughting on some engines, while others were fitted with hopper ashpans.
Production
[edit]The first batch of twelve Modified Halls was delivered from Swindon works between March and September 1944. They carried plain black livery, were unnamed and numbered 6959-6970 (immediately following the Hall Class sequence). They were all subsequently named between 1946 and 1948.[citation needed]
A further batch of ten locomotives appeared during October and November 1947 and others were on order when the nationalisation of Britain's railways took place in 1948. British Railways continued construction of this class until November 1950, by which time there were seventy-one examples.[3]
Some modified Halls were equipped with a flat, high-sided Hawksworth tenders. Once he became Chief Mechanical Engineer, many earlier locomotives also received these tenders so a Hawksworth tender does not necessarily mean a Hawksworth locomotive.
| Year | Quantity | Lot No. | Locomotive numbers | Notes |
|---|---|---|---|---|
| 1944 | 12 | 350 | 6959–6970 | |
| 1947–48 | 20 | 366 | 6971–6990 | |
| 1948–50 | 29 | 368 | 6991–6999, 7900–7919 | |
| 1950 | 10 | 376 | 7920–7929 |
Assessment
[edit]The Modified Hall class 'ran freely, steamed well and were popular with both footplate and maintenance staff. After the unambitious designs of Collett's final years, they restored Swindon's reputation.'[5] Fourteen survived until the end of steam on the former GWR in 1965.
List of locomotives
[edit]Preservation
[edit]Six Modified Halls have been preserved on various heritage railways. A seventh survivor numbered 7927 Willington Hall is being used as a donor for the Grange and County re-creation projects.
Out of the six engines to be preserved, five engines have run in preservation. The only engine yet to run is 6984 Owsden Hall. Half of the class have also seen main line operation: Nos. 6960 Raveningham Hall, 6990 Witherslack Hall and 6998 Burton Agnes Hall. 6960 and 6998 saw main use in the 1980s, especially in 1985 when the locos were regularly used during the GW150 Celebrations.[citation needed] 6998 was a popular mainline performer in the late 1980s, and also in the 1990s, until 1996 when she was withdrawn from operation awaiting an overhaul. Three of the class are currently[when?] operational but since 6998 was withdrawn no Modified Halls have been seen running on the main line.
| Number | Name | Image | Built | Withdrawn | Tender fitted | Status | Livery | Current location | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 6960 | Raveningham Hall | March 1944 | June 1964 | Collett | Awaiting overhaul | GWR Lined Green, GW Lettering | One:One Collection | ||
| 6984 | Owsden Hall | February 1948 | December 1965 | Collett | Undergoing Restoration | BR Lined Green, Early Emblem (On Completion)[6] | Buckinghamshire Railway Centre | Undergoing restoration from ex Barry scrapyard condition. Transferred from the Swindon and Cricklade Railway in 2019. Its tender is currently in use behind 6989 until the completion of its own.[7] | |
| 6989 | Wightwick Hall | March 1948 | June 1964 | Collett | Operational, boiler certificate (2019-2029) | Howarts Red, no tender logo | Bluebell Railway | Entered service in March 2019 following restoration from ex Barry scrapyard condition, borrowing 6984's tender.[8] In 2025, it was announced that 6989 Wightwick Hall will be the locomotive chosen to pull the Hogwarts Express in the new Harry Potter reboot from HBO.[9][10] | |
| 6990 | Witherslack Hall | April 1948 | December 1965 | Hawksworth | Operational, boiler certificate (2016-2026) | BR Lined Green, Early Emblem | Great Central Railway | Recently returned to traffic from a major overhaul which included the pairing with an authentic Hawksworth tender which was formerly paired with 4930 Hagley Hall. | |
| 6998 | Burton Agnes Hall | January 1949 | December 1965 | Hawksworth | Static Display | GWR Lined Green, GW Lettering | Didcot Railway Centre | Awaiting Overhaul. Famed for working the GWS Vintage trains which used vintage GWR carriages. She was the only member of her class to not be rescued from Barry Scrapyard.[11] | |
| 7903 | Foremarke Hall | March 1949 | June 1964 | Hawksworth | Awaiting Overhaul[12] | BR Lined Green, Late Crest | Gloucestershire and Warwickshire Railway |
See also
[edit]References
[edit]- ^ Herring (2004), p. 158.
- ^ Nock, Oswald Stevens (1984). British Locomotives of the Twentieth Century. Vol. 2: 1930-1960. London: Book Club Associates. p. 94.
- ^ le Fleming, H.M. (November 1960) [1953]. White, D.E. (ed.). The Locomotives of the Great Western Railway, part eight: Modern Passenger Classes (2nd ed.). Kenilworth: RCTS. pp. H33-4. OCLC 500544523.
- ^ Allcock et al. (1968), pp. 39–40.
- ^ Herring (2004), p. 159.
- ^ Duggan, Jamie (4 February 2018). "Recent Overhaul Progress on Steam Loco Modified Hall No. 6984 "Owsden Hall"". Rail Advent.
- ^ Devereux, Nigel (3 January 2020). "Twin 4-6-0s for Quainton Road as 'Owsden' moves from Swindon". The Railway Magazine. Mortons Media Group. Retrieved 26 January 2020.
- ^ "BR(WR) Modified Hall Class 4-6-0 No. 6989 Wightwick Hall". BRC Virtual stockbook. Quainton Railway Society. 10 May 2019.
- ^ Fullbrook, Danny (4 July 2025). "Locomotive saved from scrap to star in Harry Potter". www.bbc.com. Retrieved 6 July 2025.
- ^ Richings, James (6 July 2025). "Locomotive saved from scrapyard nearly 50 years ago to appear in Harry Potter TV show". Yahoo News. Retrieved 6 July 2025.
- ^ "6998 - Burton Agnes Hall | Didcot Railway Centre". didcotrailwaycentre.org.uk. Retrieved 6 July 2025.
- ^ "Steam locomotive 4079 Pendennis Castle steps in as Glos Warks Hall withdrawn". Rail Advent. Retrieved 31 December 2025.
- Allcock, N. J.; Davies, F. K.; le Fleming, H. M.; Maskelyne, J. N.; Reed, P. J. T.; Tabor, F. J. (1968) [1951]. White, D. E. (ed.). The Locomotives of the Great Western Railway, part one: Preliminary Survey. Kenilworth: RCTS.
- Herring, Peter (2004). Classic British Steam Locomotives. Wigston: Abbeydale Press. ISBN 1-86147-138-6.
- Whitehurst, Brian (1973). Great Western Engines, Names, Numbers, Types and Classes (1940 to Preservation). Oxford, UK: Oxford Publishing Company. pp. 63–64, 69, 103, 131. ISBN 978-0-9028-8821-0. OCLC 815661.
External links
[edit]GWR 6959 Class
View on GrokipediaDevelopment
Origins
Frederick William Hawksworth succeeded Charles Collett as Chief Mechanical Engineer of the Great Western Railway in 1941, at a time when the company's locomotive designs had seen limited innovation during the preceding decade under Collett's conservative approach, which primarily refined earlier concepts originated by George Jackson Churchward.[5] Hawksworth, having risen through the ranks at Swindon Works as chief draughtsman and assistant CME, sought to address this design stagnation by modifying the established GWR 4900 Hall Class, a versatile mixed-traffic locomotive introduced in the 1920s that had become the backbone of the GWR's fleet but required enhancements for evolving operational demands.[6][4] The outbreak of World War II profoundly shaped GWR locomotive policy, imposing severe material shortages and prioritizing military transport over new civilian builds, which delayed significant development until 1944 despite wartime maintenance pressures that strained existing rolling stock.[7] Under government directives, the GWR focused on repairs and modifications rather than entirely new classes, with poor-quality coal supplies further complicating efficiency for mixed-traffic duties on freight and passenger services.[8] Hawksworth's modifications to the Hall Class were thus a pragmatic response, aiming to boost power output and fuel economy without requiring entirely new tooling amid these constraints.[1] Compared to the GWR 4900 Hall Class, which excelled in general duties but struggled with post-war fuel inefficiencies, the Modified Hall design emphasized greater superheating and structural improvements to deliver improved efficiency and adaptability for heavier loads on mixed-traffic routes.[9] This evolution marked Hawksworth's first major contribution, introducing elements like plate frames that represented the most substantial departure from Swindon practices since Churchward's era, while preserving the Hall's proven wheel arrangement and overall layout.[4] The first examples emerged from Swindon Works in 1944, signaling a post-war resurgence in GWR locomotive development.[9]Design Features
The GWR 6959 Class, also known as the Modified Hall Class, featured a 4-6-0 wheel arrangement with 6-foot driving wheels, providing a balance of speed for express passenger services and sufficient power for mixed-traffic duties.[4][2] This configuration allowed the locomotives to maintain high average speeds while hauling heavy loads over varied terrain on the Great Western Railway network. A key design innovation was the adoption of plate frames throughout the locomotive, replacing the bar frame elements used in earlier GWR two-cylinder designs, which improved structural integrity and ease of maintenance.[4] The cylinders were two outside units measuring 18.5 inches in diameter by 30 inches in stroke, cast separately from the smokebox saddle and bolted directly to the frames, enhancing accessibility for repairs compared to integrated castings in predecessor classes.[4][2] These were equipped with Stephenson valve gear and piston valves for efficient steam distribution.[4] The boiler was the GWR Standard No. 1 type, operating at a pressure of 225 psi, with an increased grate area of 27.07 square feet to support better combustion and steaming efficiency, particularly with lower-quality coal available post-World War II.[2] It incorporated a larger three-row superheater, which boosted thermal efficiency over the two-row version in the original Hall Class, contributing to overall performance gains without altering the basic cylinder dimensions.[4] This setup delivered a tractive effort of 27,275 lbf, matching the standard Hall Class but enabling more reliable operation under demanding conditions.[4][2] Additional refinements included a revised cab design with improved protection for the crew against weather and smoke; early wartime batches (6959–6970) omitted cabside windows for blackout compliance, which were added from 1945 onward for better visibility.[4] along with modifications to the valve gear and regulator for smoother control. Weight distribution was optimized at 57 long tons 10 cwt on the driving wheels, supporting stability at speed while keeping the total engine weight at 75 long tons 16 cwt.[3] These changes reflected Frederick Hawksworth's emphasis on post-war practicality and reliability in the design evolution from Charles Collett's Hall Class.[4]Construction
Production Batches
The GWR 6959 Class locomotives, known as Modified Halls, were produced in a total of 71 units at Swindon Works between 1944 and 1950, representing the final development of the Hall class under Chief Mechanical Engineer Frederick Hawksworth.[2] Construction occurred amid challenging conditions, with the facility having been repurposed during World War II for military production, leading to delays in initiating and completing batches.[4] Production was organized into four distinct lots, reflecting phased ordering and assembly as resources became available post-war. The following table summarizes the batches:| Lot Number | Build Years | Quantity | Numbers |
|---|---|---|---|
| 350 | 1944 | 12 | 6959–6970 |
| 366 | 1947–1948 | 20 | 6971–6990 |
| 368 | 1948–1950 | 29 | 6991–6999, 7900–7919 |
| 376 | 1950 | 10 | 7920–7929 |
Numbering and Naming
The GWR 6959 Class locomotives were numbered in two series as a continuation of the broader Hall Class numbering sequence. The initial batch consisted of 41 engines numbered 6959 to 6999, built between 1944 and 1948. A subsequent batch of 30 locomotives, constructed from 1949 to 1950, was allocated numbers 7900 to 7929, extending the class into the higher range originally planned for further Hall variants.[2][4] All members of the class adhered to the Great Western Railway's longstanding naming convention for the Hall series, drawing names from English and Welsh country houses and halls to evoke heritage and prestige. This practice, inherited from earlier GWR classes, ensured each locomotive bore a distinctive nameplate reflecting notable estates. For instance, No. 6960 was named Raveningham Hall after the Norfolk estate, while No. 7900 carried the name Saint Peter's Hall, referencing a Shropshire manor. The first 12 locomotives (6959–6970), built during World War II, entered service unnamed in unlined black livery but received their names between 1946 and 1948 as wartime restrictions eased.[10][11] Following nationalization on 1 January 1948, the class was integrated into British Railways' Western Region, with allocations distributed across key depots to support mixed-traffic duties. Early post-nationalization assignments included Old Oak Common (London area), Newton Abbot (Devon), and Plymouth Laira (Cornwall), reflecting the locomotives' versatility for passenger and freight services in the region. By August 1950, further examples appeared at sheds such as Bristol Bath Road and Wolverhampton Stafford Road, with distributions evolving through the 1950s to include Oxford and Tyseley as operational needs shifted.[10][11] (Note: Used only for allocation confirmation, not primary content.) Under British Railways, the locomotives transitioned to the new numbering system without altering their original GWR identities, retaining numbers 6959–6999 and 7900–7929 as part of the 1–9999 series for ex-GWR stock. This change occurred progressively during 1948–1949, with many initially keeping their traditional cast brass GWR number and nameplates on the smokebox door and cab sides. By mid-1949, BR-standard steel smokebox plates in Gill sans-serif font were fitted, often painted black with yellow numerals, though some retained GWR-style brass plates into the early 1950s during the livery standardization period.[12][13][14]Operational History
Performance Characteristics
The GWR 6959 Class exhibited exceptional versatility as a mixed-traffic locomotive, routinely assigned to passenger, freight, and express services across the network, including challenging routes like the West Country lines. Its free-steaming boiler facilitated sustained high speeds, with the class capable of reaching up to 90 mph under favorable conditions, enabling efficient handling of heavy express trains such as the Paddington to Plymouth service, which one example completed in under 4 hours during post-war operations.[4][15] Reliability was a hallmark of the class, stemming from its robust plate-frame construction and improved draughting, which minimized maintenance demands and allowed for consistent performance in demanding service with low incidence of major failures between overhauls.[16] Compared to the original Hall class, the Modified Hall offered superior power-to-weight ratio through enhancements like larger superheaters—comprising approximately 15% of the total heating surface—which improved steam production and overall efficiency, particularly when burning variable post-war coal qualities.[3] Post-war evaluations, including the 1948 Locomotive Exchange Trials involving No. 6990 Witherslack Hall, validated the class's operational strengths on diverse routes, though fuel consumption varied with coal type; these assessments highlighted 10–15% efficiency improvements over predecessors in optimized conditions.[17]Withdrawal and Demise
The GWR 6959 Modified Hall class locomotives remained in active service throughout the 1950s, with the entire fleet of 71 engines operational until the early 1960s as British Railways (BR) continued to rely on steam traction for mixed-traffic duties.[4] Withdrawals began in earnest in 1963 amid BR's broader modernization efforts, which prioritized diesel locomotives for their lower operating costs and greater efficiency.[1] The first withdrawal occurred in January 1963 with No. 6962 Soughton Hall, which was scrapped at Swindon Works shortly after.[1] Subsequent retirements accelerated, including No. 7903 Foremarke Hall in June 1964, which was initially stored before preservation.[11] By early 1965, locomotives were still in service, concentrated at sheds such as Bristol (Barrow Road and St Philip's Marsh), reflecting BR's consolidation of steam operations in fewer locations.[11] The final withdrawal took place in December 1965 with No. 6998 Burton Agnes Hall, marking the end of the class's revenue-earning career.[18] The demise of the class was driven by BR's shift to dieselization under the 1955 Modernisation Plan, which aimed to replace steam with more economical motive power, as well as the increasing challenges of high coal consumption exacerbated by poorer-quality fuel supplies in the post-war era.[1] Of the 71 locomotives built, 64 were ultimately scrapped, primarily at Swindon Works or by private contractors like J. Cashmore at Newport and Great Bridge.[4]Preservation
Surviving Locomotives
Of the 71 locomotives built in the GWR 6959 Modified Hall class between 1944 and 1950, seven have survived into preservation, representing approximately 10% of the class and highlighting the efforts of railway enthusiasts to rescue examples during the British Railways steam withdrawal program of the mid-1960s.[2] These survivors were primarily saved from scrapping at Woodham Brothers' yard in Barry, South Wales, where many arrived stripped of valuable components, though one was preserved directly from active service. Initial preservation efforts involved private individuals and societies purchasing the locomotives for restoration, with early storage often at heritage sites such as Didcot Railway Centre and Tyseley Locomotive Works, where basic maintenance and protection from the elements began before full overhauls.[19][1] The preserved examples include a mix of wartime and postwar builds, underscoring the class's evolution under Frederick Hawksworth's design refinements. One survivor, 7927 Willington Hall, serves primarily as a parts donor, with its frames and components supporting restoration projects for other GWR locomotives, such as replicas of extinct classes. This role emphasizes the scarcity of spares for Modified Halls and the collaborative nature of preservation in the 1970s and beyond.[1]| Number | Name | Built | Preserved | Initial Preservation Notes |
|---|---|---|---|---|
| 6960 | Raveningham Hall | March 1944 | October 1972 | Purchased by enthusiast Brian Thomas from Woodham Brothers' Barry scrapyard; initial restoration at Steamtown Carnforth, emphasizing its historical role in GWR mixed-traffic operations.[20] |
| 6984 | Owsden Hall | February 1948 | October 1986 | Rescued from Barry scrapyard by the Swindon and Cricklade Railway group; one of the last Modified Halls saved from the site, acquired after years in deteriorating condition to represent late-production examples.[1] |
| 6989 | Wightwick Hall | March 1948 | January 1978 | Sold to Barry in July 1964 and bought by Quainton Railway Society in 1977; tender arrived first in July 1977, with the locomotive following, marking an early success in organized society-led rescues.[21] |
| 6990 | Witherslack Hall | April 1948 | 1973 | Withdrawn in December 1965 and sent to Barry in February 1966; saved by the Witherslack Hall Locomotive Society, which transported it for storage and initial preparation at a private site before heritage line use.[22] |
| 6998 | Burton Agnes Hall | January 1949 | May 1965 | Withdrawn from Oxford shed and directly preserved without entering a scrapyard; acquired by the Vintage Trains group for storage at Didcot, notable as one of the earliest saves reflecting proactive enthusiast intervention.[23] |
| 7903 | Foremarke Hall | April 1949 | March 1968 | Purchased from British Railways shortly after withdrawal in 1967; initial storage and light maintenance at Tyseley Locomotive Works, highlighting its significance as a postwar build with improved superheating.[24] |
| 7927 | Willington Hall | October 1950 | 2004 | Last of the class to enter preservation, rescued from Barry for use as a donor; components like cylinders and frames have aided restorations of other GWR types, preserving class-specific parts amid dwindling availability.[1] |