37227 passes Wainhill on 3 April 2022 with the 1C00 09:20 Princes Risborough to Chinnor service. The Chinnor & Princes Risborough Railway runs along the western edge of the Chiltern Hills, which allows some panoramic views such as this, from the hillside. I hadn't noticed at the time the large flock of birds flying over the field in the background, but I had noticed the large bank of cloud in the distance, which was coming this way!