George Weston Limited was founded by George Weston in 1882. Although George Weston began the business as a bakery, he acquired multiple food companies, including McCormick's Limited in 1937, and the business expanded rapidly.

Note: McCormick's Limited (previously known as the Canadian Biscuit Company Limited) had acquired the Paulin-Chambers Company Limited in 1926.

In 1972, a number of Weston-owned biscuit companies were amalgamated under the name InterBake Foods. At that time, InterBake operated biscuit plants in London, Ontario (at the former McCormick's factory) and in Winnipeg, Manitoba (at the former Paulin's plant).

In 1989, InterBake was sold to the Montreal firm of Culinar, Inc.

The Paulin's plant in Winnipeg, Manitoba was closed by InterBake in 1991 and production was moved to London, Ontario and to other Culinar-owned plants in Montreal.

Today, George Weston Limited is a major Canadian public company, representing Canada’s largest food and drug retail businesses through its control of Loblaw Companies Limited (“Loblaw”) and Loblaw’s recent acquisition of Shoppers Drug Mart.

The history of George Weston Limited was, in part, ascertained from a memorandum written by Bryan Dare to the University of Waterloo. Special Collections & Archives, the majority of which has been copied into the history note of this authority record. A physical copy of the memorandum can be found in SCA188-GA420-1-1