B437 (51338, 59504 & 51380) passes Lower Basildon on 25 January 1986 with the 10:15 Moreton-in-Marsh to Paddington all stations service. Anyone contemplating the whole journey could look forward to over three hours of stopping at every station, including all the minor stations on the Cotswold Line! Generally speaking most Thames Valley DMU turns were operated by the Reading allocated sets (L400 et al), but occasionally a train off the Cotswold Line would bring a Bristol interloper such as this to the area.