Ismay Lamps

of Roden Street, Works, Ilford, Essex
- 1927 Company founded.
- 1938 The members of the Electric Lamp Manufacturers Association jointly bought the lamp businesses of Ismay Industries Ltd.
- 1939 Private company formed as John Ismay and Sons.
- 1949 Name changed.
- 1961 Manufacturers of electric lamps. [1]