L.N.E.R Lines: This London and North Eastern Railway (The L.N.E.R) was the major railway serving the Eastern area of Great Britain with its line covering East Anglia, Yorkshire, Northumberland and the Scottish coast through to Aberdeen. Its wide variety of steam locomotives - which included the most famous and fastest of all time; Flying Scotsman and Mallard - is well represented today in the world of preservation and on the main lines of British Rail. L.M.S Lines: The London, Midland and Scottish Railway (The L.M.S) was the largest of the four railway companies formed in 1923. It's territory stretched from Wick in the North to Bournemouth in the South, although it's principal areas of operation were along the West coast of England and Scotland and the industrial Midlands. Its legacy of steam locomotives is one of the finest and many of them still run today, lovingly restored on both private railways and the national system. Southern Lines: The Southern Railway was the smallest of the four railway companies formed in 1923. However it carried the largest passenger traffic of all with its enormous suburban system which was rapidly electrified. By contrasts its rural branch lines, which proliferared all along the South coast of England and the main lines from which they sprang, were worked by a variety of steam locomotives right up to the end of main line steam. Many of these branches survive today, forming the basis of numerous preserved railways and the rich variety of Southern steam locomotives is still well represented.