Depots or agencies were established in many overseas markets. Of these, Canada became the most important, with its cross-country network of depots. Agencies were established in Australia, South Africa, New Zealand, Spain, Italy, Germany, France, Holland, Egypt and South America.
From the 1930s, Pilkington had established overseas operations to manufacture sheet glass and safety glass. By the 1950s, the company was manufacturing in Argentina, Australia, Brazil, Canada, New Zealand, and South Africa.