Worshipful Company of Goldsmiths
A regulator, also called The Goldsmiths Company
Although not technically a public authority, this company has substantial public responsibilities: (1) Running the The Trial of the Pyx a "Court" which checks the Royal Mint is correctly making the country's coinage. (2) It acts as the Assay Office London and regulations under the Hallmarking Act 1973 allow it to hallmark precious metals.
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