L419 (51356, 59508 & 51398) accelerates away from Langley station on 6 November 1986 with the 2F35 11:49 Paddington to Didcot Parkway Network SouthEast service. I had also photographed the unit a little earlier, as it headed into London with the 2A32 09:42 Didcot Parkway to Paddington train.