Peter Spence and Sons
Originally, Peter Spence of Pendleton Alum Works, Manchester (1882).
Later of National Buildings, St. Mary's Parsonage, Manchester, 3. Telephone: Manchester Blackfriars 3521-3. Cables: "Alum, Manchester"
1845 Peter Spence took out a patent on the alum process that he had accidentally discovered.
Moved to Manchester to access cheaper supplies of fuel; established works at Pendleton; further patent in 1850. Soon became the leading manufacturer of alum.
1857 Lawsuit on nuisance caused by emissions resulted in moving the works to Miles Platting
Established branch works in Birmingham and Goole.
1887 A. G. Kurtz and Co won an action against P. Spence and Sons of Manchester restraining the latter from making threats about a patent relating to fixing colours on cloth and paper which both parties claimed to have originated.
1934 Patent Application - Improvements in or relating to preparations for agricultural or horticultural pest control and the manufacture thereof. 
1947 British Industries Fair Advert for Chemicals used in: Dyeing; Tanning; Paper Sizing; Water Softening; Textiles and Leather; Cosmetics; Pharmacy; Printing Inks; Rubber; etc., etc. Manufacturers of Alum, Aluminium Sulphate, Aluminoferric, Activated Alumina, Pharmaceutical Alumina, Precipitated Aluminas, Silica Commercial, Silica Precipitated, Calcium Carbonate, Titanium Salts, Titanium Potassium Oxalate, Titanium Phosphoxolate, Titanium Tetra-chloride. (Chemicals Section - Olympia, Ground Floor, Stand No. A.1097)