47976 Aviemore Centre is well off the beaten track here. It is passing Launton on 6 August 1998 with the 1Z13 07:25 Derby to Derby (via Banbury, Marylebone & Aylesbury) Serco test train. For those interested the train consists of vehicles 999508, 977422, 977802, 977468 & 977905. Note the slewing of the track from one side of the formation and back again in the background.