In 1919, Ivan Levinstein's operation at Blackley merged with other chemical dyers to form the British Dyestuffs Corporation Limited,[REF] before becoming part of ICI in 1926 [REF].
The ICI was founded in December 1926 from the merger of four companies: Brunner Mond, Nobel Explosives, the United Alkali Company, and British Dyestuffs Corporation [REF].