Feltham. This yard also featured the Maunsell S15s, which were allocated to Exmouth Junction, Hither Green and Salisbury, demonstrating the "go anywhere" nature of the class. Despite the design being only a year newer, the S15s outlasted their N15 King Arthur class counterparts because of their dual freight/passenger abilities, though they were retired between 1962 and 1966 as part of the British Railways Modernisation Plan. Maunsell S15 number 30837 became the final member of the class in operation, returning to Feltham in January 1966 to work a farewell rail tour. Accidents and incidents In the summer of 1946, locomotive No. 502 was hauling a freight train that overran signals and was derailed by trap points at Wallers Ash, Hampshire. Preservation Seven S15s have been preserved, two Urie examples and five by Maunsell, which can be seen at several heritage railways around the country. All the surviving members of the class were purchased from Woodham Brothers scrapyard in Barry, Vale of Glamorgan, South Wales. Currently only 499 and 830 have yet to steam in preservation. Of the five others that have run in preservation 825, 828 and 841 have all operated on the main line at certain points, though 825 has only run between Grosmont & Whitby. Livery and numbering LSWR and Southern Railway Under LSWR ownership the S15s were painted in the late LSWR dark Holly Green livery, with the same black and light green lining applied to most of the LSWR's freight designs. Gilt lettering and numbering was located on the tender and cabside respectively. The initials "LSWR" were located on the tender. The first Southern Railway livery continued that of the LSWR, but with the number displayed on the tender. However from 1925, a darker Olive-type green was substituted, and the entire class was so painted. Wheels were green with black tyres, and the cabside numbers were replaced by a cast oval plate with "Southern Railway" around the edge and the number in the centre. Primrose Yellow "Southern" and locomotive number transfers were placed on the tender tank. From 1927, the Maunsell locomotives were given black livery with green lining, and remained in that guise with little modification until nationalisation. The only slight livery modification occurred before the Second World War, when Oliver Bulleid introduced the "Sunshine Yellow" lettering and numbering. A further modification was the application of a green shaded "Sunshine" lettering during the war. This was