Integral Auxiliary Equipment
of 47 The Vale, Acton, London, W3
1936 T. E. Beacham started the Integral Company, which made many of the hydraulic pressure pumps used on British war aircraft.
1937 Light engineering. 
1939 See Aircraft Industry Suppliers
by 1952 Integral Ltd was a subsidiary of H. M. Hobson
Sources of Information
- AA.  Image coutesy of Aviation Ancestry