What's all this then, a Thames Valley Class 117 at Stenson Junction in Derbyshire! L420 (51400, 59510 & 51358) is well off the beaten track as it heads north on 16 October 1986 with an Old Oak Common to Derby Litchurch Lane ECS move in connection with its repainting into Network SouthEast livery. This is therefore probably one of the very last pictures taken of this unit in its blue and grey livery, which it had worn since the late 1970s. Derby obviously did a swift job, as less than two months later it was spotted back on its old stomping ground, in its new colour scheme.