Complex sentence: Twickenham is home to the headquarters of the Rugby Football Union and Twickenham Rugby Stadium therefore England National Rugby Union Team play all their home matches in this stadium which is one of England's largest stadiums and the world's largest rugby stadium.
Split into simpler sentences: Twickenham is home to the headquarters of the Rugby Football Union and Twickenham Stadium. The England National Rugby Union Team play all their home matches at Twickenham Stadium, which is one of England's largest stadiums and the world's largest rugby stadium.