GWR A nostalgic look at the legacy left by 'God's Wonderful Railway' and a reminder of the brilliant engineers and designers from the company who brought us such wonderful locomotives as King George V, Gloucester Castle, King Edward I and Pendennis Castle. Southern Railway We see evocative footage of the engines and lines on this railway, many based around the commuter and holiday routes of London and South East England but also extending to the wonderfully named lines of the 'Castleman's Corkscrew' and 'The Withered Arm'. LMS In this look at the largest railway company in the country we see the diverse ways that it covered its needs from heavy workhorses for long distance freight work to steam engines struggling up steep inclines in rural Derbyshire and single unit sprinters on the West Coast Line. LNER Archive film of the second largest of the Big Four companies brings us the wonderful high speed locomotives of Sir Nigel Gresley and views of King's Cross and York Stations in the days of steam and more recently. The Jazz Services and the Deltics add interest to this fascinating programme.