Lissen Ltd., 16-20 Woodger Road, Goldhawk Road, Shepherd's Bush, London W12, was founded in 1923 by Thomas Noah Cole. This address is found in an ad in Modern Wireless of October 1923.
Previously it was operating as the Lissen Company.

Other address: Lissen Ltd., 18-22 Friars Lane, Richmond, Surrey.
The Company also had works at Angel Lane Edmonton, London from about 1925.

They produced parts, kits, cabinets and complete radio sets till 1934 / 1935, when Cole left to run Vidor / Burndept.

Most models from 1935 to 1941 were also produced as Ever Ready branded sets, often with a different cabinet and sometimes with brackets to move two controls. Many models from 1935 to 1938 used Pye chassis, though it's not clear if it was more than the metal work. Different models often shared the same metal chassis, even with different types or numbers of valves.

At least one factory was burnt down in the Blitz in 1941. From 1942 onwards only Ever Ready branding was used and only variations of the 1939 all dry portable produced, either due to destruction of London factories or wartime shortages. All Ever Ready production after 1941 was outside London. The Ever Ready parent company wound up Lissen just after WWII, though production branded Lissen seems to have ceased 5 years earlier. There were only battery Ever Ready models after 1941. Only the 1950s BEREC Fiesta had a mains as well as battery after 1941.

Like the 1935 to 1941 Ever Ready, most Lissen models only had the model number on the guarantee card, not on the chassis or rear plate. Some models from 1939 had the name, but not model number on the tuning scale. There is no correspondance between Lissen and Ever Ready model numbers, though from 1939 the last couple of digits are sometimes the same. Equivalents are listed on Trader Service sheets for some models. Not all models were released both on Lissen and Ever Ready badges, especially in 1935 (the first Ever Ready year).