Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 133,384 pages of information and 211,458 images on early companies, their products and the people who designed and built them.
Heayberd of 10 Finsbury Street, London, EC2. Telephone: Metropolitan 7516. Telegraphic Address: "Heayberd, London"
1922 Founded by Frederick Cecil Heayberd.
1939 Incorporated as a Limited Company.
By 1946 were operating from 28 Russell Square, London.
1937 British Industries Fair Advert for: Battery Chargers; Rectifier Units and Plant; Transformers; Radio Components; Motor Accessories. Automobile Compasses. (Electricity: Industrial and Domestic Section - Stand No. Cb.728) 
1963 Motor Show exhibitor. Battery chargers.