A centre, Harold joined the Huddersfield Giants in 1906. In 1912, Harold was appointed captain of Huddersfield. Harold led Huddersfield to the; 1912-1915 and 19-20 and 1923 finals (winning in 19113, 1915) Championship Finals, Challenge Cups in 1913, 14-15 and 20. Harold played 436 games for Huddersfield over 16 seasons (175 tries, 12 goals).
Harold played 15 games for Yorkshire from 1908-23 (4 tries). Harold played 9 test matches for England from 1909-23 (7 tries, 3 goals). Harold played 12 test matches for Great Britain from 1911-22 (2 tries). Harold captained Great Britain from 1914.
Harold passed away on July 19 1939.
In 1998, Harold was an inaugural inductee into the British Hall of Fame. Harold is a member of Huddersfield’s Hall of Fame.