About Us

The Goldsmiths’ Company Assay Office, also known as Assay Office London or the London Assay Office, has provided hallmarking services to the trade since the Goldsmiths’ Company was founded in 1327.  You can find out more about the history of The Goldsmiths' Company here.

Whilst still retaining our historic roots, today we focus on providing our customers with an unparalleled service for hallmarking across three key locations using the latest processes and technology.

Being part of the Goldsmiths’ Company also means our customers have access to the wide range of services and facilities that are provided across the company including technical advice, research facilities, exhibitions and our online directory for designers and makers, Who’s Who in Gold and Silver.

For further information please contact us.