WD protected Simplex (Tin Turtle) No LR3090 (MR1369), is looked after by the Moseley Trust and is owned by the Armley Mills Industrial Museum, Leeds. It is a 40hp Motor Rail locomotive produced for the War Department Light Railways of the First World War. 3090 become a television star during early 2003 after being the subject of one of Channel 4's Salvage Squad restoration programmes. No. LR3090 formerly worked with No. LR3098 at Knostrop Sewage Works, Leeds.
It visited for the FR 50 celebrations in 2005, and remained in store at Glan-Y-Pwll until it was transferred to the Moseley Trust's new museum site at Apedale, where it arrived on 2 November 2008.