I am registered at the London Assay Office and all my larger silver pieces (over 7.78g in weight) will be hallmarked. Any item that is hallmarked will clearly say so in the product description. At this point in time, I don't usually send items below this weight for hallmarking as it isn't legally required. Please check out the infographic below for more information or click on the link to find out more about the London Assay Office and the hallmarking process.

 London Assay Office