Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,372 pages of information and 233,518 images on early companies, their products and the people who designed and built them.
1935 Public company - Ismay Industries - was incorporated.
1939 Name changed.
1939 Ismay Industries had consisted of about 70-80 interlocking companies but these were mostly "junk"; as part of salvaging the company, it was renamed Sterling Industries; an ongoing subsidiary would be Sterling Engineering Co. It was later announced that the company would sell the half of A. C. Cossor's shares that it owned
1961 Engaged as fine instrument engineers and manufacturers of plain bearings, self-lubricating bearings, sintered components and power hydraulic equipment. 600 employees. 
1961 The company would not have returned any value ordinary shareholders in the event of a liquidation but, in the face of a cash offer by Cayzer family interests, a majority of shareholders rejected a bid from Vokes
1962 Cayzer family interests, including Caledonia Investments, were involved with a scheme of reorganisation for the company
1966 Acquired Huntley and Sparks
1967 Acquired Damic Controls
1993 Established a thermal process division, in addition to its combustion and hydraulics engineering activities
2000 Caledonia Investment Trust owned all of the company's shares