The Goldsmiths' Company Assay Office

The Goldsmiths' Company Assay Office The Goldsmiths' Company Assay Office is where hallmarking began over 700 years ago. In 2010 Palladium was brought into this regime.

Founded to regulate the craft or trade of the goldsmith, the Goldsmiths' Company has been responsible since 1300 for testing the quality of gold, silver and from 1975 platinum articles. The word Hallmark originates from the fifteenth century when London craftsmen were first required to bring their artefacts to the Goldsmiths' Hall for assaying and marking. This requirement continues unchanged toda

y and the company still carries out it's statutory function through the operations of The Goldsmiths Company Assay Office. The company continues to play an important role in the support of the craft and industry,funding apprenticeships and assisting with the technical training of aspiring craftsmen. It is currently engaged in building the Goldsmiths' Centre to build workshops for craftsmen and a promotional exhibition area and the Goldsmiths' Institute as a postgraduate facility and for pre-apprentice training. It also promotes excellence in the design and craftsmanship of silverware, jewellery and art medals through advising and arranging commissions, competitions and exhibitions. A selling exhibition, Goldsmiths' Fair is held every year in the first week of October, where members of the public can purchase the work of over 80 contemporary designers and craftsmen. The company has long supported a wide range of charitable areas, and pursues a number of educational projects with schools and teachers. Please feel free to visit http://www.thegoldsmiths.co.uk/welcome-to-the-assay-office/ and leave your details to receive our regular newsletter.

30/06/2026

Have you ever tried to call us and wondered why you can’t get through?

In our latest reel, Technical Quality Manager Raj Thaker explains why the Assay Office requires initial contact to come via email.

If you have any questions drop us a comment down below.

01/01/2026

Happy New Year! 🎉

The date letter for 2026 is a upper case B. A non-compulsory mark, the date letter changes annually on 1 January. The font, case, and shield shape all change so each can only indicate one specific year.

Learn more about hallmarking and the five component marks via link in bio.

#2026

01/12/2025

We’re officially in the run-up to Christmas, but what does that mean for our opening hours and service times?

In our latest video, members of the team give an update on how our services will change during the Christmas period:
- On Tuesday 23 December 2025 at 12:00pm, we will close the counters at Goldsmiths’ Hall and Greville Street for the Christmas Holidays.

- Both counters will re-open at 9am on Monday 5 January 2026. We are anticipating an extremely busy run up to Christmas, to ensure that your packets are marked and returned to you on time, please note the following timelines and cut-offs:

- Standard Service – The cut-off for packets to be received for standard service is Monday 15 December.

- Next Day Service – The cut-off for packets to be received for next day service is Friday 19 December. Packets received on Monday 22 December for next day service, are likely to be ready Monday 5 January, but those with any special requests, such as larger bespoke marks are not guaranteed.

- One Hour Service – The cut-off for packets to be received for one-hour service on Tuesday 23 December is 10:00am. They must be collected by 11:45pm.

Please login to your online account to see when your packet is completed and ready for collection/postage.

If you have any questions, tell us in the comments or get in touch via our website. We’re here to help you get the most out of our service.

From the London Assay Office team we wish you a Merry Christmas and a Happy New Year!🎄

Address

Goldsmiths Hall, Foster Lane
London
EC1N 8SQ

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