A.C. Cossor Ltd. was founded in 1859 by
Alfred Charles Cossor in Clerkenwell,
London. The factory was making scientific glassware. Cossor
started with radio in the twenties, but only made
factory-made radios since 1930. Before that,
do-it-yourself kits where sold with names like "Melody
Maker" and "King of the Air". Cossor was already an important valve
maker. Before the Second World War, Cossor was the
biggest radio producer in England, with a wide choice in
types, although there was not much variety in design.
the early 1930s the firm developed cathode ray tubes for
television, the first television receivers, and the
world's first radar receiver.
Cossor continued to trade for many years
in Harlow Essex as part of the Raytheon group of
companies. It got out of the
consumer trade, but it did so by selling the right to
use the name of "Cossor" for consumer products, not by
selling the whole company.
Radio's were produced until the sixties.