7754 was built by the North British Locomotive Company of Glasgow for the Great Western Railway as works number 24042, being completed in December 1930 at an approximate cost of £2,800. The design, developed by C. B. Collett from earlier pannier tanks, was a standard shunting locomotive which could also work branch passenger and freight trains as required.

7754 was allocated new to Reading in 1931; duties probably including working the Henley, Basingstoke and Newbury lines, as well as commuter trains in the London Division and shunting in the large marhsalling yards in Reading. The next allocation was to Old Oak Common (London) in 1936 from where duties would have been hauling empty coaching stock trains in and out of Paddington Station. An intermediate overhaul was carried out at Swindon in 1946, and a heavy general overhaul there in 1949.

The final allocation on the national network was to Wellington (Shropshire) in May 1949. From there passenger and pick-up freight trains on the local branches would have occupied 7754, and perhaps stopping passenger trains between Shrewsbury, Wellington and Wolverhampton. During this time 7754 had a light overhaul at Tyseley at Christmas 1951, a heavy intermediate overhaul at Barry loco works eight months later, and a heavy general overhaul at Swindon in May and June 1956.

During the late 1950s, British Railways (Western Region) withdrew many tank engines as surplus to requirements, the majority of the pannier tanks being sold to private and industrial users. 7754 was withdrawn in January 1959, and sold to the National Coal Board in July that year. It worked first at Talywain Colliery in South Wales, sharing the shed with another four tank engines. Duties included hauling a miners' train of five converted GWR box vans along the steep (up to 1:23) four-mile branch.

7754 in 1958

One notable event during 7754's stay at Talywain colliery was 21st March 1970, when it hauled an enthusiasts' special. This consisted of the five GWR box vans plus eleven open coal trucks, with Islwyn (one of the other tank engines) banking.

See Above: 7754 was transferred to a new colliery system at Mountain Ash, being hauled there over BR metals in a freight train. 7754 joined four saddle tank engines there, but required an overhaul and repairs before use. It was not popular with the crews, having a main line type firebox and a habit of discarding parts of its anatomy along the track. It also played havoc with the lightly laid track, and both footplate and permanent way crews breathed a sigh of relief when a loose piston caused a cylinder cover to blow off in 1975 (73?). It was probably the dedication of one man at Mountain Ash, Howard Griffiths, an ex GWR steam fitter, that had kept 7754 running as long, and thus secured its eventual preservation.

At the time, there were many preservation societies who would have liked to acquire 7754 when withdrawn. However, the NCB were persuaded that 7754 should be donated to the National Museum of Wales, who could then place it on loan with any of the railway societies. Luckily, they decided that Llangollen were suitable candidates, and 7754 was placed on permanent loan to the Railway.

7754 on shed

Above: 7754 'on shed' in 1995, appearing in GWR green at the time. (Keith Langston)

Restoration was a long-winded affair, mostly taking place outdoors, and turned out rather more expensive than expected, given that 7754 was supposedly withdrawn in almost running condition. The cylinder block was pronounced as beyond repair in 1988, and much of the motion turned out to be very badly worn due to years of neglect in its later life. The axleboxes' white metal had worn right through, and even through the brass to the axlebox itself in one case. A spare set of frames and cylinders from 3612 were purchased from the Severn Valley Railway in 1990.

Restoration was assisted by a move into the goods shed the same year, and by 1991 a rolling chassis had been completed. The following year saw the boiler reunited with the frames. Work continued, with a first move under its own power on 20th August 1993, followed by running-in taking place during the Santa specials and a return to service in 1994. Sadly, after around 18 months' service, it was taken out of traffic for major boiler repairs after the angle ring securing the front tubeplate was found to have a crack. As with all jobs in railway preservation the job got progressively bigger as time went on, ending up with a replacement tubeplate, tubes, stays, and repairs to cracks in the outer firebox. The boiler was replaced in early 1997 and the engine was quickly reassembled, becoming a mainstay of off-peak services.

At present 7754 is out of traffic undergoing its ten-year overhaul

Departing Carrog

Above: 7754 heads away from Carrog with a mid-week service. (George Jones)

7754 is now owned by the Llangollen Railway Trust, the voluntary body supporting Llangollen Railway. It has appeared in GWR green and BR black liveries.

7754 at Carrog

Above: 7754 stands at Carrog with an evening charter train on 25th July 1999. (Dave Southern)

Shed Allocations




Old Oak Common



Wellington (Shropshire)



Wellington (Shropshire)



NCB Talywain Colliery


NCB Mountain Ash



September 1980

Principal Dimensions

Wheel arrangement


Power classification


Nominal tractive effort

22,510 lbs


47 tons

Wheel diameter



Two 17½" x 24"

Boiler pressure


Valve gear


Route Availability

Blue / Yellow from 1950

History adapted from Steam at Llangollen no. 46 (Summer 1988); original text by Nigel Lightbown

Updated 6th Feb 2015/updated again 13th July 2020 by  John Rutter

Above Left to Right - 7754 on Berwyn Viaduct in 2004; At Goods junction in 1993 on a running in evening turn following rebuild for the first time; Doing what it was designed for - banking a freight out of Llangollen Station in 1998;  Smokebox in 2004

7754 outside Llangollen Shed in the process of having its wheels removed. 7th November 2007

Picture - George Jones

Progress on reassembling the frames of 7754 in Llangollen Shed on 9th March 2008 Photo John Rutter

Slowly coming back together in the Shed 16th April 2008

Photo John Rutter

Cab, dome cover and side tanks in River Siding on 14th September 2008

6th September 1981, dismantled in Llangollen yard

Photo Bryan Johnson Archive

7754 in the scenery

Above: 7754 in the scenery - and unusual light - during the Branch Line weekend 1999. (Robert Brittle)

Above: 7754 is pictured during 1958, shortly before being sold off to the NCB. (Keith Jones)

The following information has come in from Richard Wilson from notes he made at the time.(9th July 2020)

· Sold by BR to the NCB in July 1959 for use at Windsor Colliery, Abertridwr, before moving on to Llanbradach Colliery.

· By September, 1962 it was at Deri Colliery.

· By July, 1963 7754 was at the NCB's Tredegar Central Workshops

· Late 1964, early 1965 to Elliot Colliery, New Tredegar.

· January 1969, to the Talywain network in Gwent

· May, 1970 taken by a Class37 via Cardiff and Radyr to Mountain Ash.

· Circa 1973 blew a cylinder cover, to Mountain Ash Central Workshops early 1974, but never repaired?

Many thanks Richard, if anyone has more info, please let me know.

13/7/2020 - Restoration to running order commenced again at Llangollen during late 2019 and is progressing apace (or was, before the Corvid-19 shutdown). Work has recommenced at a low level, and maintaining social distancing, with a hope that 7754 will soon run again at Llangollen. Assistance with funding this important rebuild will be gratefully received. Please contact Paul Bailey or Andy Maxwell at the railway.

7754 out of the shed on 16th June 2020. The boiler work remains to be completed.