The horses pay no attention, as the 09:40 Salisbury to Waterloo Network SouthEast service crosses Hurstbourne Viaduct on 13 March 1993. Although this is from a 6x7 slide, and Pentax lenses are very sharp, the Class 207 DEMU is just too far away for me to be able to read the very small bodyside numbers, so the unit will have to remain unidentified.