As late as 2000 it was still occasionally possible to see a Class 37 on the 6B24 15:33 Didcot Power Station to Cardiff Tidal Sidings oil empties. On 19 October of that year, it was surprisingly the turn of a 37/4, rather than the usual 37/7. 37426 passes some autumnal colours at Circourt Bridge, Denchworth.