Bonnie Dundee began life at Dundee Gas Commissioners in Scotland, built to 2 foot gauge and used for freight haulage over a fourty year period.
The late Ian Fraser of Arbroath purchased her for preservation, and she was transferred to the Ravenglass & Eskdale Railway in 1976 where restoration began. As part of this process, she was regauged to 15 inch gauge and side tanks were added. In 1996, the locomotive was rebuilt in its current tender form.
On long term loan from Ravenglass, a full restoration by John Fowler and Sons has recently been completed with a change back to Stephenson Valve Gear as originally built.