 The year 1909 saw the opening of Twickenham as the RFU 's new home , which heralded a golden era for English rugby union . England 's first international at Twickenham brought them victory over Wales , and England went on to win the International Championship ( then known as the Five Nations ) for the first time since the great schism of 1895 . Although England did not retain the title in 1911 , they did share it in 1912 . A Five Nations Grand Slam was then achieved in 1913 and 1914 as well as in 1921 following the First World War . England subsequently won the Grand Slam in 1924 and as well as in 1925 . This was despite having started 1925 with a loss to the All Black <unk> in front of 60 @,@ 000 fans at Twickenham . 
