The highest and lowest numbered Class 168s approach High Wycombe station on 27 August 2017. 168329 & 168001 are working the 1H17 09:38 Stratford-upon-Avon to Marylebone Chiltern Railways service. The high brick retaining wall is a distinctive feature of High Wycombe, but unfortunately there is now a 'wall' of trees on the other side of the line, which makes photography difficult, even in mid summer.