LMS Stanier Class 5 4-6-0 No. 44806 is a preserved British steam locomotive. It was built at Derby in 1944.

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Quick Facts Type and origin, Power type ...

LMS 4806
44806 Running around its train at Llangollen.
Type and origin Power type Steam Designer William Stanier Builder Derby Works Serial number 154 (second series) Build date July 1944
Specifications Configuration: ​  • Whyte 4-6-0 Gauge 4 ft 8+1⁄2 in (1,435 mm) Leading dia. 3 ft 3+1⁄2 in (1.003 m) Driver dia. 6 ft 0 in (1.829 m) Length 63 ft 7+3⁄4 in (19.40 m) Fuel type Coal Fuel capacity 9 long tons (9.1 t; 10.1 short tons) Water cap. 4,000 imp gal (18,000 L; 4,800 US gal) Firebox: ​  • Grate area 28+1⁄2 sq ft (2.65 m2) Boiler LMS type 3C Boiler pressure 225 lbf/in2 (1.55 MPa) Cylinders Two, outside Cylinder size 18+1⁄2 in × 28 in (470 mm × 711 mm) Valve gear Walschaerts Valve type Piston valves
Performance figures Tractive effort 25,455 lbf (113.23 kN)
Career Operators London, Midland and Scottish Railway → British Railways Power class LMS: 5P5F BR: 5MT Axle load class BR: Route Availability 7 Withdrawn August 1968 Current owner North Yorkshire Moors Railway Disposition Under Overhaul

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Originally numbered 4806 by the LMS, it had 40000 added to its number under British Railways after nationalisation in 1948. 44806 was one of the last locomotives to be withdrawn from service, surviving until 1968, the last year of steam on British Railways.

44806 was an early candidate for preservation, moving directly from BR to the "Steamtown" collection at Carnforth, where it was housed in the same locomotive depot where steam's final fires had been dropped only recently. This meant that it was not subjected to the years of neglect and parts-stripping at Woodham Brothers scrapyard in Barry, Vale of Glamorgan, South Wales which was the fate of many.

In preservation, it was unusually well-travelled between museums and lines, although staying in the North West of England. Some years were spent based in Accrington, with working excursions to a planned preserved line at Helmshore. Although these exact plans never quite came to fruition after that station's closure in 1972, most of the line survived as what is now the East Lancashire Railway.^[2]

In 1973, 44806 was based for a short time at the newly reopened Lakeside and Haverthwaite Railway, as their largest and only tender engine, but operating a large tender engine was difficult on a line without a turntable. Whilst at Haverthwaite, 44806 was adopted by the ITV children's TV series Magpie and named "Magpie". The Magpie programme was always in competition with the BBC's comparable Blue Peter programme, which had earlier adopted the LNER A2 Peppercorn 532 Blue Peter, conveniently built under that name.

Shortly after this, a crack was found in the boiler of 44806, in the outer firebox. Haverthwaite did not have the workshop facilities for an engine of this length or weight, so it was moved, this time to "Steamport" in Southport. These were busy times for the British steam preservation movement, with many new projects and scrapyard rescues all competing for attention, time and money. As a result, 'Magpie' languished. In 1983, Magpie was moved to Manchester and the Museum of Science and Industry, as a purely static exhibit.

44806 Kenneth Aldcroft was based and worked at the Llangollen Railway.^[3] 2008 was the 40th anniversary of the end of British Railways steam, and of 44806's own preservation. In July 2013, the locomotive was offered for sale, and was purchased by the North Yorkshire Moors Railway. Until January 2018 when its then boiler certificate expired, 44806 operated trains on the NYMR only between Grosmont and Pickering because it did not have mainline equipment fitted for use on trains running from Grosmont to Whitby.

Following two years of storage, In February 2020 the engine was sold from the NYMR to Peter Best with the intention of undertaking a full overhaul for a return to traffic with the intention that the engine will remain at the NYMR for use on their regular passenger trains. Alongside remaining as an NYMR based engine, having only run on heritage railways in preservation 44806's overhaul was to be done to mainline standards and be certified for use on the mainline, however the engine will only venture on the mainline running between Grosmont and Whitby with occasional visits to Battersby.^[4]

44806 emerged from the works in November 2023 following the completion of its latest overhaul and running in commenced in December 2023 with the intention of returning to full service in 2024.^[5] Now fitted with the required TPWS and GSM-R equipment for use on services travelling down to Whitby the engine will become part of the NYMR's mainline certified fleet of engines for Whitby services.^[6]

• 44806 making her way down the goods line with a class C goods train near Langley Mill in July 1963.
• 44806 Passing Helmshore signal box while on her way to the Lakeside and Haverthwaite Railway.
• 44806 Resting on Llangollen shed waiting for its next duty
• 44806 Running round its train at Carrog.
• 44806 Arriving into Carrog with a demonstration freight train in April 2011.
• 44806 undergoing a Steam Test at Grosmont on the North Yorkshire Moors railway in November 2023