1884 - established as Everett and Co after Edgar Isaac Everett left The Cambridge Scientific Instrument Company to set up his own business;

1900 - partnership as Everett, Edgcumbe and Co formed when Everett joined with Kenelm Edgcumbe. Located at Colindale Works, Hendon, London NW9;

1906 - became limited company

1968 - after the sale of the Cambridge Instrument company to George Kent, Everett Edgcumbe Ltd created