A look at Great Western locomotives at work from the South Midlands to South Wales. The large and the small are seen in this video starting at Oxford. The Fairford branch is covered in detail before going on to Birmingham via Banbury and scenes at Worcester. There are scenes at Swindon including the Works. Gloucester via Chalford leads us to Pontypool Road. Follow the route to Crumlin and Aberbeeg, coal trains from Blaenavon. There are panniers and Kings, Prairies and Castles to delight the GWR fans.