Street John"s College; King"s College School.
Educated at King"s College School and Saint John"s College, Cambridge, Colman joined the J & J Colman mustard business and then served as its Chairman from 1896. He was also Chairman of Commercial Union. He served as High Sheriff of Surrey from 1893 to 1894 and also became Lieutenant of the City of London.
He was created a baronet in 1907.