[2] Diana was built in 1909 by Kerr, Stuart as part of an order for six 750 mm (2 ft 5+1⁄2 in) gauge locomotives for Mauritius.

Although several of the locomotives in the order were sent to Mauritius, Diana wasn’t delivered and stayed at Kerr, Stuart's factory in Stoke on Trent.

In 1917, the locomotive was purchased by the Home Grown Timber Committee of the Board of Trade for use on the Kerry Tramway, near Newtown, Powys in Mid Wales.

He sold his collection in October 1970, and Diana was purchased by Tony Hills, who moved it to Gilfach Ddu on the Llanberis Lake Railway.

[4] In 2017 the loco was 100 years old and was taken on a tour around some of the UK's railways visiting Statfold Barn, Beamish, The Ffestiniog & Welsh Highland, Apedale, Amerton and Leighton Buzzard.