Seeing Bouldersmith's Farquharson made me think of mine, so I looked up this thread. I realized I had additional information to add, so here goes.

This rifle is well documented. It was made for A&N by Charles Osborne and shipped February 14, 1911. It languished in A&N's inventory until 1919, when it was sold. It has it's own full-page writeup in Wal Winfer's Volume 6 of British Single Shot Rifles mentioned above. Here's a scan:

I particularly wanted to post this scan because of the request Huvius for details of the stampings on the front of the action, all conveniently shown and discussed here by Winfer.

Curl