Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 134,616 pages of information and 213,708 images on early companies, their products and the people who designed and built them.
Buckingham Avenue, Slough.
1935 Murex Ltd, in conjunction with Johnson, Matthey and Co (which controlled some fabrication patents) formed 2 new companies for production and fabrication of magnesium alloys - Magnesium Metal and Alloys Ltd and Magnesium Castings and Products Ltd
1937 Magnesium alloys. "Magnuminium" Alloys. 
1939 See Aircraft Industry Suppliers
1945 Murex sold the company as Murex no longer produced magnesium metal