37425 passes Troedrhiwfuwch (between Pontlottyn and Tirphill) on 16 April 2005 with the 2F38 15:15 Rhymney to Cardiff Central service. Unfortunately the earlier sunshine had now given way to thick cloud, but at least the ex-works loco stands out well in such grim conditions. 37425 was to spend a good deal of time on this route over the next year, resulting in the application of the very appropriate Pride of the Valleys nameplates a few months later.