Some further research determined these to be from a modern London boutique jeweler. Date marks correspond to 2003 and 2005. Sorry for the bother and thanks once again.
Good day, I am in the possession of 2 silver toggle bracelets and one simple hoop bracelet which I acquired some 8 years ago. After much research through the years, I have not been able to successfully identify the maker or the date based on the marks. Present are a Lion Passant and a leopards head....