Enthusiasm for historical steam locomotives never ceases to amaze. There are more Heritage Lines now than ever before, and more and more people are spending their weekends participating in 'Special Weekends', 'Santa Specials' and many other steam events. This nostalgic book is packed full of information and data on many of the preserved locomotives that now run on Britain's Heritage Lines. It focuses on the 'Big Four': London, Midland and Scottish Railway (LMS); Great Western Railway (GWR); London and North Eastern Railway (LNER); and Southern Railway (SR). Each entry provides information about the locomotive's class, year, wheel alignment, cylinders, driving wheel diameter, tractive effort, boiler pressure, valve gear, coal capacity and water capacity. With this book, every locomotive enthusiast will be able to indulge their passion for the steam trains of the past.