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Thomas Locker and Co, of Warrington, Lancs
1879 Company founded by Thomas Locker
1921 "An Order authorising the employment of women and young persons of 16 years of age and over in wire winding and weaving at the works of Messrs. Thomas Locker and C., Ltd., Church Street, Warrington, on two day-shifts."
1947 Public company.
By 1957 subsidiaries included:
1960 Wire sieves for mining. 
1961 Engaged in manufacture and sale of woven wire, perforated metals, wire work, screening and handling plant and air and liquid filtration equipment.