Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,151 pages of information and 233,681 images on early companies, their products and the people who designed and built them.
1927 Private company formed as Partridge and Mee
1935 Name changed.
1961 Manufacturing electrical engineers, makers of transformers, transductors, magnetic amplifiers, electronic control gear, electronic equipment and sound reproducing equipment. 600 employees.