http://www.idexonline.com/portal_FullMazalUbracha.asp?id=25331
I used to buy my sausages from Cobb just off Sloane Square when I lived down that way. They closed down & the shop now sells shoes.
Cobb were the Queen's butchers!
For Royal Warrant holders and Royal Warrant aspirants, there is even a Royal Warrant Holder Association...
http://www.royalwarrant.org/