The Hallmarking Act 1973 provides that it is an offence to describe, in the course of a business or trade, any article as made wholly or partly of precious metal (i.e. gold, silver, platinum or palladium) if that article is not hallmarked. It is also an offence to supply, in the course of a business or trade, an article described as made wholly or partly of precious metal, if that article is not hallmarked.
There are some exemptions from the hallmarking requirements. For example, where the weight of the metal content (precious metal and any base metal) falls below the prescribed minimum, it need not be hallmarked. The minimum weights are: gold 1.0 gram; silver 7.78 grams; platinum 0.5 grams, palladium 1.0 gram. There is also an exemption for articles intended for dispatch to a destination outside of the UK (i.e. articles intended for export).
All the items for sale on this website fall below the hallmarking weight requirements. Hallmarking such small items, while possible, would significantly increase the price and may take away from the finished look due to the size of the components. Components are sourced from reputable suppliers and are used in good faith.
More information can be found on the Assay office website and you can find a copy of the dealers notice here: