I have looked at all of the common RRs from England but this one is different. The RR is not in a full depression, it just has a square frame, so I wasnt sure if it truly matched any of the RRs I found. Help!
Richard Redrick has a similar mark, Richard Richardson, Robert Rutland,
None of these look quite like it either. http://www.silvermakersmarks.co.uk/Makers/London-RR-RZ.html