More than 245 years in business

Providing a number of services from Hallmarking, Laser Etching and Mark Identification...

Experts in Hallmarking

The oldest form of consumer protection, the history of the hallmark dates back as far 1300...

A range of Analytical Services

Precious metals have been analysed and hallmarked for well over 200 years...

Coronavirus (COVID-19) Information

First of all I would like to thank everyone who sent me their best wishes during my time off work having tested positive for coronavirus.

We are now preparing for a second lockdown from Thursday 5th November. The Office will remain open and we will continue to support the trade across both Hallmarking and Analytical Services. Our Early Hall has been reinstated but will operate temporarily on a 2-day service at a charge of +50%.

I would ask for your patience and understanding throughout this difficult time, as although my staff are working flat out, inevitably we are losing personnel to either positive COVID-19 tests or through them having to self-isolate due to Track & Trace.

Please send any questions to and please stay safe. This is certainly a brutal virus!

Ashley Carson
Assay Master & CEO

Hallmarking »


In an age where consumer protection and rights are a key concern for most present-day manufacturers it is fascinating to note that the hallmark is, in fact, one of the oldest forms of consumer protection that exists. The history of the hallmark dates back as far 1300.

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Analytical Services »

Analytical Services

We offer a range of additional analytical services from metal and mineral analysis, to mercury screening and environmental testing. Sheffield Assay Office was the first UK Assay Office to be awarded UKAS accreditation and is proud to have retained that accreditation for 32 years.

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