0-6-0T Leighton Buzzard Railway number 4 "Doll" was built by Andrew Barclay of Kilmarnock, Scotland, in 1919. "Doll" was one of three identical locomotives built for the Sydenham Ironstone quarries, near Banbury, Oxfordshire, which had been opened to meet the demand for First World War munitions. When the quarries closed in 1925, the locomotive was sent to Bilston Steelworks, near Wolverhampton, where it worked until it was withdrawn in 1959. After brief spells in preservation near Kenilworth, Warwickshire, and at Bressingham, Norfolk, it arrived at Leighton Buzzard in 1969 - 2 Sep 2018 William Slim.