Diesels of classes 20, 31, 37, 40, 50 and 55 at work in the 1970s, 1980s and 1990s. Locations include Luton, Penistone, Kings Cross, Paddington, Newton Abbot, Lickey Incline, Birmingham New Street, St Andrews Junction, Abram, Trent, Skelton, Chesterfield, Leeds, Ribblehead, Wood Green, Peterborough, Offord, Langford, Stillington, Annfield, Newcastle and Salisbury. Locomotives featured include 20069, 20131, 20151, 20154, 20160, 20175, 20180, 20186, 20187, 31138, 31141, 31182, 31188, 31189, 31191, 31229, 31249, 31264, 37007, 37008, 37070, 37107, 37152, 37154, 37160, 37193, 37209, 40077, 40086, 40106, 40196, 50015, 50016, 50036, 50043, 50047, 55002, 55007, 55010, 55012 and 55016, plus 25261. Tracks 1 to 21 have been remastered from recordings originally available on Audicord CD ACD153 Motive Power Volume 1: English Electric. Tracks 22 to 30 are based on original recordings from the SoundTracks collection.