well this stuff is a medium hard cheese. I'm a cheese eater and while I've been told that there are some small dairies making decent cheese in the states now - I've never found any when over there. So not sure what you'd compare a mature double gloucester with ( and this is a great double gloucester). In larger cities with WHole Foods, and Specialty Cheese store popping up it is work but mature double glouster isn't incredibly hard to get. Neal's Yard is a huge importer as well as the Fine Cheese Co. of Bath. We even get alot of the borough market cheeses as well.
As Far as small Farmhouse and artisan cremeries there are plenty, I can send you a spread sheet of them later, Most are super smal and only sorce to local stores. Ones of considerable note to look for:
Cowgirl Creamery from Point Reyes, CA
Meadow creek dairy from gaylax, VA
cypress grove creamery from humbolt co, CA
Capriole farms from greenville, IN
All of the creameries have great portfolios and represent a wide range of american and eruopean tradditions in there cheeses.
Whole Foods has opened a couple of store in London Now and beyond having a great deal of cheese from the world should have a nice representation from the states. I know for a fact that the cowgirl creamery used that as ther first international retail outlet. I know you hate the city, but if you are a foodie in any reguards to the word you should go and see it. You can directions and a map at:
Wholefoods.com
Nice job on your cheese, I like you q-view! Good info on smoking times and strenghths.