OK here is a summary of those suggested so far. Thanks for the great response and also some very enjoyable photos.

UK
* Purdey
* Holland & Holland
* Westley Richards
* W.J. Jeffery
* Watson Bros
* John Dickson
* McNaughton
* E.J. Churchill
* Cogswell & Harrison
* William Evans
* Charles Lancaster (are these currently made?)
* John Wilkes
* Alexander Henry
* Willaim Douglas
* Peter V Nelson
* Boss & Co (UK?)

Italy
* Zanardini
* Rizzini
* Beretta
* Peruggini & Visini
* Renato Gamba
* Pedersoli

France & Belgium
* Francotte
* Chapuis
* Verney-Carron
* LeBeau Courally
* Marcel Thys
* Domoulin (sp? too)
* Harald Wolf (??)

Germany & Austria
* Merkel
* Krieghoff
* Blaser
* Johann Fanzoj
* Peter Hofer
* Josef Just
* Scheiring
* jacob Koschat
* Hambrusch
* Heym
* Fuchs
* Fennerwerk/Valmet/Tikka

Spain
* Arrieta

USA & Canada
* Rigby
* Searcy
* Dakota
* Martini-Hagn
* Winchester (or are these out of production?)

Russia
* Baikal
* IZP (????)

Czech
* CZ (I assume they still do?)

50 malers so far.

Added the double barreled bolt action Fuchs to the list. How could they be forgotten!

Frankonia ??? - I believe made their own doubles or were they sub-contracted? Also Harold Wolf - I believe he was making doubles as well (from memory) or just bolt rifles? Plus the old Valmet 412/Tikka 77K/Fennerwerk with its adjustable barrels in U/O configuration. There is a really ugly but cheap Russian rifle too. Its initials escape me currently - IZP, ???? I'm guessing Winchester & CZ still make doubles - perhaps not Winchester?

Any mistakes that I have made above, please let me know.

Gryphon - I will check out your Ferlach link still. Thanks for that as I knew there were a lot missing from there.

Thanks again for those suggestions. As I thought there would be more than at least I expected. Still more I believe.