Class 55 Deltics at work towards the end of their BR careers at Doncaster, Darlington, Ferryhill, York, Skelton, Burton Coggles, Stoke Bank and Retford. Locomotives featured are 55002, 55004, 55005, 55006, 55007, 55008, 55010, 55011, 55012, 55013, 55014, 55015, 55016, 55017, 55018 and 55022, plus 31284, 31323 and 47524. Tracks 1 to 17 have been remastered from recordings originally available on Audicord CD ACD131 Deltic Duties. Tracks 18 to 22 are based on original recordings from the SoundTracks collection.