Every Mark Matters

The Goldsmiths’ Company Assay Office is where hallmarking began. 

Our unparalleled reputation for excellence has been built since 1300 when we first began testing and hallmarking precious metals.

We have built our hallmarking expertise over 700 years, and the combined experience of our teams is second to none. 

As part of the Goldsmiths' Company - one of the Great XII Livery Companies in London - our aim is to support, uphold and perpetuate the trade. 

The quality of our services, the quality of our support, and quality of our hallmarking sets us apart.

Whether you prefer traditional struck marking, or the latest laser marking techniques, we provide a service of the highest standard.

• Manage your hallmarking online
• Four service levels - from a standard 3-5 day turnaround to a fast 60 minutes
• Three convenient London locations
• For international customers, we offer a Direct Packet service - from manufacturers straight to retailer

We Apply the Full Range of Available UK Hallmarks

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