During the early 20th century, Britain's railways were dominated by four giant companies, known as the "Big Four". How did these major players - the Great Western Railway, London, Midland and Scottish Railway, London and North Eastern Railway and Southern Railway come to prominence? This illustrated YouTube video from Hand Drawn History tells the fascinating story of consolidation in the British railway industry. Learn about the Railway Act of 1921 and how it led to the creation of these four railway giants. If you're interested UK railway history and know more about the history of the Big Four, don't miss this video: