At the end of the war, Garfield returned to Toronto and rejoined the small family company, George Weston Limited. He soon convinced his father to import biscuit making equipment from England and in 1922 successfully launched Weston’s English Quality Biscuits.
Only twenty-six years old when his father died in 1924, Garfield became president and general manager of George Weston Limited. By purchasing smaller bakeries in Canada and the United States, this young man soon managed to grow the business. In 1935, he expanded the business to Britain, later moving into Australia, South Africa and Europe.