I am registered with the London Assay Office and have a unique Makers Mark.
Adding hallmarks is not essential for my smaller pieces (for silver under 7.78g) however even if not hallmarked, I do stamp each silver item with my registered Makers Mark so you can be sure its made by me. The description for each item details whether it is hallmarked or not.
If you would like a piece hallmarked, please enquire before placing an order and I can give you a quote. The process can take some time (especially in the months leading up to special events such as Christmas or Valentines) so please ask well in advance.
Click on the link which will give you some hallmarking details as provided by the London Assay Office.