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Inside Sheffield Assay Office - The Home of Britain's Mark of Trust

Published: 12th November 2025

Inside Sheffield Assay Office - The Home of Britain's Mark of Trust

This month Assay Master, Ashley Carson, allowed a rare behind the scenes look at our state-of-the-art facility. 


𝐈𝐧𝐬𝐢𝐝𝐞 𝐭𝐡𝐞 Sheffield Assay Office — 𝐭𝐡𝐞 𝐡𝐨𝐦𝐞 𝐨𝐟 𝐁𝐫𝐢𝐭𝐚𝐢𝐧’𝐬 𝐦𝐚𝐫𝐤 𝐨𝐟 𝐭𝐫𝐮𝐬𝐭.

Most people never see what happens behind those doors. Until now.

Ashley Carson, Sheffield’s longest-serving Assay Master, opened those doors to David Richards MBE and The Digital Forge CIC — and what we saw was extraordinary.

The precision.
The science.
The heritage embedded in every movement.

From receipt and purification…
To metal testing and analysis…
To laser and press hallmarking…
Right through to the furnace, where metals are melted — this is an unprecedented and fascinating look at the discipline, pride and trust behind every hallmark.

And this is exactly why we created 𝐓𝐡𝐞 𝐃𝐢𝐠𝐢𝐭𝐚𝐥 𝐅𝐨𝐫𝐠𝐞.

To uncover the stories that matter.

Watch the full behind-the-scenes walkthrough here...
 


The Sheffield Assay Office was established in 1773, under an Act of Parliament and today the company assays and hallmarks the precious metals - silver, gold, platinum and palladium. Sheffield Assay Office is one of only four UK assay offices who all work to uphold the Hallmarking Act of 1973 and continue to ensure consumer protection for customers purchasing precious metals.

To find out more about the whole range of services offered by Sheffield Assay Office, such as our hallmarking and analytical services, please email us at info@assayoffice.co.uk or complete the contact form on our website at http://www.assayoffice.co.uk/contact-us ,

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