The GWR Rheidol Tanks are a fleet of 2-6-2T steam locomotives of the Great Western Railway design built between 1923 and 1924.

Shortly after taking control of the line, the GWR realised that the original rolling stock was in a poor state of repair.

9 is one of the original Davies & Metcalfe Locomotives,[1] as some websites and books incorrectly report,[2] having been misled by Swindon Works.

1213 as 'spares' in their accounting book as the GWR Board had only given them leave to build two new locomotives (No.

[8] In June 1956 the three were given the names which they still carry today, being unnamed up to that point; no, 9 received the name Prince of Wales that its predecessor had borne until repainted into Cambrian Railways livery after that company absorbed the locomotive in July 1913.

Problems with sparks and unreliability of the coal supplied caused British Railways to look to alternative fuels for the locomotives.

[11] All three Vale of Rheidol tanks are still in service and operating on their original route.

The locomotives were named by British Railways in 1956 and currently do not carry their nameplates.