56040 Oystermouth brings up the rear of the Hertfordshire Railtours 1Z33 08:03 Paddington to Tower Colliery 'Faulty Tower' railtour at Abercwmboi on 21 October 1995. 33116 & 33109 were leading the tour, but as they were heading up the valley they were unfortunately coming straight out of the sun. However, this convenient mound of spoil made an excellent vantage point to photograph the grid quietly smoking away on the back.