In 1923 most of the main line railways of Great Britain were "grouped" -- compulsorily reorganised into one or other of four new large companies, the "groups", following the Railways Act 1921. Both the LSWR and the LBSCR were incorporated into the new Southern Railway. The former hostility between them had diminished in recent years, but now was abolished altogether.Michael R Bonavia, The History of the Southern Railway, Unwin Hyman, London, 1987, , pages 3, 7, 10 and 15
