Collaro Ltd of Ripple Works, By-Pass Road, Barking, Essex.
Manufacturer of gramophones and tape recorder decks.
1920 Company founded by Christopher Collaro at 23 Garway Road, London, W2.
1924 Private company.
1926 Moved to the Culmore Works, Culmore Road, Peckham, London, SE15.
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 the Valley Works, Langley Mill, Derbyshire when its London factory was bombed.
1948 Moved to Barking, Essex.
1960 Acquired by Magnavox Electronics.
1961 Precision engineers, manufacturing gramophone motors, recording units, tape recorders, fan heaters, and were described as the largest manufacturers of record changers in the United Kingdom. 
1960s Went out of business.
Sources of Information
-  Bedford Vintage Audio