L407 (51342, 59494 & 51384), Class 121 L121 (55021) & L413 (51391+59501+51349) pass St Georges on 20 April 1985 with the Monmouthshire Railway Society 'Maerdy Gras' railtour. As the name suggests, this tour visited Maerdy Colliery, a well as Cwm Colliery, Blaengarw, Onllwyn, Aberpergwm and Cynheidre. This is a type of railtour that has all but disappeared from the national network. The use of lengthy DMU formations to traverse branch and freight only lines was an ideal low cost solution, although of course not very popular with haulage enthusiasts!