The Vale of Rheidol Railway runs between Aberystwyth and Devil's Bridge in Mid Wales. http://www.rheidolrailway.co.uk
This film was made by Przemyslaw Sobkowicz and Rob Pates from the Department of Theatre, Film and Television Studies at Aberystwyth University and is displayed here with their permission.
http://www.aber.ac.uk/en/tfts/
Since filming, the railway has begun converting the steam locomotives from oil firing back to coal.