Collaro Ltd of Barking, Essex.
of Culmore Works, Culmore Road, Peckham, London, SE15. Telephone: New Cross 3844-3804. Cables: "Korllaro, London". (1929)
Manufacturer of gramophones and tape recorder decks.
1920 Company founded by Christopher Collaro.
1924 Private company.
1929 Listed Exhibitor. Manufacturers of Gramophone Motors and Accessories. 'Any one element can be removed or replaced without interfering with the rest of mechanism. Special unit plate embodying automatic stop'. Torque and Fatigue Spring Testing Machine. (Stand No. MM.10) 
WWII The company was engaged in munitions work and temporarily relocated to Langley Mill, Derbyshire when its London factory was bombed.
1946 Moved to Barking, Essex.
1960 Acquired by Magnavox Electronics.
1961 Precision engineers, manufacturing gramophone motors, recording units, tape recorders, fan heaters, and are described as the largest manufacturers of record changers in the United Kingdom. 
1960s Went out of business.
Sources of Information
-  Bedford Vintage Audio