Alfred Graham & Co.
St. Andrew's Works, Crofton Park, London SE4 (1911)
Branch Factory: Kilmore Works, Forest Hill, London SE23

Graham Amplion Ltd.
26 Saville Row, London W1 (1931)
Works: in Slough

Manufacturer of loudspeakers, and at least 101 models of Algraphone gramophones, exhibited in

The Algraphone Salon
25-26 Savile Row, Regent St., London (1922)
82 High St., Clapham, London SW4 (1925)

The address in Clapham also was "Service depot for the World's Standard Amplion wireless loud speaker". 

The company sold Metrovic valves during 1926/27 which are direct equivalents of Cosmos types.

The company was formed in the late 1880s as partnership between Alfred Graham, Edward Graham and Arthur Dearlove and officially established in 1894.

In the 1910s Alfred Graham & Co. offered a range of naval telephones (loudspeakers) and complete installations for naval vessels, as well as telephone switchboards.

In the early 1920s, the company marketet the Graham Electrical Autohorn, as well as permanent magnets.

The company was divided into two limited companies end of 1926: Alfred Graham & Co. Ltd. (operating the naval side of the business), and Graham Amplion Limited (responsible for the manufacture and sale of loudspeakers and other radio products).

In 1939, Graham Amplion Ltd was struck off the register of companies, in 1962 they were wound up by the High Court on application of Optical Products Ltd., a supplier.

There were numerous subsidiaries and sales agencies world-wide:

• Australia: Amplion (Australasia) Pyt. Ltd.
• Belgium: Compagnie Continentale Amplion (est. 1925)
• France: Compagnie Française Amplion
• Germany: Deutsche Amplion-G.m.b.H.
• USA: The Amplion Corporation of America (est. 1924)