Having trained in his father's business as an assayer, Percival Johnson established his own firm in 1817.
[1] He went into full partnership with George Matthey, a stockbroker, in 1851.
[1] His expertise in refining earned his business the appointment of Assayer to the Bank of England in 1852.
[1] He was also active in silver-mining and in 1854 moved to Stoke Fleming[2] in Devon where he had mining interests.
This United Kingdom business-related biographical article is a stub.