With the industry around the docks in the background, GWR Castle 4-6-0 No 7029 Clun Castle running light after working the 05.45 Gloucester-Cardiff the last diagrammed passenger steam working into Cardiff at Tyndall St Cardif on 10 July 1965. The tower has the initiols GKIS, I wonder if this was a precursor to Guest Keen Nettlefolds (GKN) as I seem to recall they had a big site near here.

Photo: R.O. Tuck / Rail Archive Stephenson