46229 was saved from the scrap yard along with non streamlined classmate 6233 Duchess of Sutherland, as a result of Sir Billy Butlin's efforts to place these locomotives as children's playground exhibits at his holiday camps.

Having started construction work in the winter of 1961, the new £2 million Butlins Minehead camp opened to the public on 26 May 1962.

In 1976, the Friends of the National Railway Museum accepted the locomotive from Butlin's on a twenty-year loan deal, and immediately began to restore and preserve it.

After purchasing the locomotive from Butlin's in 1987, after an extensive overhaul it resumed running in 1989, withdrawn from main line duty in 1996 when its seven-year boiler ticket expired.

In September 2005 the National Railway Museum announced that the streamlining would be re-instated, returning the locomotive to its original appearance.