A few more tidbits......
http://www.925-1000.com/forum/viewtopic.php?t=14766http://www.925-1000.com/forum/viewtopic.php?t=3549"
N. B. Every shopkeeper who shall strike his own mark over the workman's mark, is liable to a penalty of ten pounds, unless his own mark is entered at Goldsmiths' Hall.It is the last line of this notice that is of interest here. This perhaps is the answer as to why some of the provincial silversmiths, like Thomas Ollivant of Manchester, registered at the LAO even though they did not appear to have any work assayed there, instead choosing to use the office at Chester, as noted by Mike (MCB), for the assay of his own work.
I had always assumed that silversmiths, like Ollivant, registered at London purely because, at this time, there was a certain kudos about 'London Made' pieces, but
could not understand why they did not use oversize punches, as did George Gray, if the intent was to make the public think that they had a manufactory in London."
And another.......which should make your head spin even more (because it seems the topic was having the same effect here too)
http://www.925-1000.com/forum/viewtopic.php?t=5488