Famas was manufactured by Radio (1936) Ltd, they were distributed by Farmers Trading Co. Ltd. Currently there is 1 documented model.

Press 23 December 1940Press 7 December 1940

The Famas brand appears to have been an in-house one for Farmers  It appears in advertising during, and just after, WWII.  It was not just used on radios and appears to have been a house brand used on products made specifically for them - for example, the brand was seen on boots as well:

Press 12 June 1942

1 Documented Famas Model
1940 5 + magic eye on some sets  Dual Wave  Famas EB