He became an apprentice to a tube-manufacturer, and established his own business in 1861, selling pipes for gas and water. In 1867, he and his brother, James, formed a partnership, A & J Stewart, which went on to become Stewarts & Lloyds, one of the largest steel tube-manufacturers in the country.
He worked as an apprentice at a tube manufacturer and established his own business in 1861, selling pipes for gas and water. In 1867, he formed a partnership with his brother James, which later evolved into Stewarts & Lloyds, one of the largest steel pipe manufacturers.