This firm was established in 1913 to manufacture spoons and forks, using the Wilzin process (in which flatware was formed under heavy presses).  The process had been invented by Arthur Wilzin, who was the Paris director of an American company, E. W. Bliss & Co.  SSP&C was financed with £10,000 capital and organised by Heeley Silver Rolling & Wire Mills, which was owned by the family members of Mappin & Webb.  A new factory was built at Priestley Street.   In 1917, Mappin & Webb acquired SSP&C for £11,250.

But the Wilzin process was a failure (and so, too, at Sheffield Flatware).  According to J. N. Mappin Fraser (1957)¹, the dies and tools constantly broke.  In 1923, Mappin & Webb reverted to the old methods and reorganised the firm with £10,000 capital.  Mappin & Webb’s main Queen’s Road factory was now adjacent to the Priestley Street plant.   SSP&C remained at that address until the 1960s.  Its cutlery was marked ‘SSP & C. Co Ltd EPNS’, or ‘FIRTH STAINLESS’, or ‘SILCUTA’, ‘SILTONA’, and ‘NOLBOGRECE’.

^1. Fraser, J Newton Mappin, ‘History of Mappin & Webb Ltd’, typescript in Sheffield City Library Local Studies