He played first-class cricket in New Zealand for Auckland, Hawke's Bay and Otago between the 1886–87 and 1902–03 seasons.

[1][2] Mills was born at Dartford in Kent in 1867 before his family emigrated from England to New Zealand in 1873, sailing on the Berar.

He spent a few years in Melbourne, where he played senior cricket for Essendon from 1889 to 1892.

They had two daughters and two sons, one of whom, Jack, played Test cricket for New Zealand in the 1930s.

[11] George spent 45 years as a groundsman, including spells at Essendon and at Carisbrook in Dunedin.