 He acted as manager for a land and stock agency in Nairobi, British East Africa (now Kenya) in 1903, then two years later with fellow South Australian Leslie Jefferis Tarlton (1877–c.1950) he formed Newland, Tarlton & Co. Ltd., organizing big-game safaris for wealthy patrons, including Theodore Roosevelt in 1909–1910.Newland was a president of the Associated Chambers of Commerce, a member of the Kenya's Legislative Council, and chairman of the Nairobi Town Council.