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Division of Thomas De La Rue and Co at Warwick.
1946 Thomas De La Rue and Co acquired Thomas Potterton (Heating Engineers) as the basis for a new business in gas water heaters. . De La Rue leased additional factories at Gateshead, which would be used for production, and Elstree, which would mainly be used for development.
1958 The Potterton division of De La Rue made several types of Potterton Boilers
1958 Launch of oil-fired boilers was badly affected by the Suez Crisis
1964 Investment in French, German and other companies in Europe
1981 Potterton International was a of 6 boiler makers investigated for collusion in raising prices