D400 & 50007 Sir Edward Elgar accelerate away from Princes Risborough station on 16 May 1992 with the Panshanger Rail Group 1Z10 08:00 Aylesbury to Plymouth 'Chiltern Atmospheric 50' railtour. The train's route from London to the West Country was certainly very familiar to the Class 50s, but the starting point of Aylesbury certainly wasn't!