55020 (121020) passes North Lee on 21 March 2017 with the 2P23 08:49 Aylesbury to Princes Risborough Chiltern Railways service. Marsh Crossing, on the North Lee to Bishopstone road, can be seen in the background. Despite being well over half a century old, this vintage product of Scotland looks to be in excellent condition. It sounded in fine fettle too!