The classic 1991 railtour pair of Class 50s, reunited at the Chinnor & Princes Risborough Railway's 'Class 50 Mileage Day' event on Monday 7 April 2025, 50008 Thunderer & 50015 Valiant approach Wainhill with the late running 13:15 Chinnor to Princes Risborough service. The delay was caused by track access problems at Princes Risborough.