You may have seen some media coverage of the Purdey Bicentenary Trio of guns, made to celebrate that anniversary this year. The set is for sale by sealed bid. More information is available on the Purdey web site here:
http://www.purdey.com/heritage/bicentenary/thebicentenarytrio/The slideshow of the making of the guns may be of particular interest.
I was in the Long Room last week and able to have a good look at the motor case and display cabinet. They are both beautifully crafted and look quite magnificent. Out in the shop I was able to gaze upon (but unable to handle!) the double rifle and SxS 12; the O/U Damascus 20 was out at the shooting grounds. They too are fabulous examples of the modern gun makers art. If you happen to find yourself in London before the end of the year, do make time to go into Audley House and see for yourself.
Tim