Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 134,712 pages of information and 213,790 images on early companies, their products and the people who designed and built them.
of 19-24 Floral Street, London, WC2
Strand Electric were the UK's and Europe's principal manufacturers of stage lighting and theatre equipment.
Their head of R&D Frederick Bentham was the designer of the Light Console and many Spotlights. They pioneered the use of die-cast mouldings for spotlight construction.
1914 Founded by Arthur Earnshaw and Phillip Sheridan.
1937 Manufacturing electrical engineers. 
WWII: designed and manufactured TAT training simulators for the Royal Navy.
Now exist only as a brand name.