Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,705 pages of information and 232,164 images on early companies, their products and the people who designed and built them.
1946 40 percent of the share capital of Welwyn Electrical Laboratories was acquired by Worcester Royal Porcelain
1968 Queen's Award to Industry for Technological Innovation 
1990 Acquired by TT Electronics as part of the purchase of Crystalate.