No, I wasn't joking, because to my knowledge 1) The 2nd edition of the rules are available via dark-age.com in pdf form, and 2) CMON does international shipping. So it's not that it's not available in the
UK, it's just that they haven't figured out distribution to the
UK (something that a quick look at their forums appears to be in motion. So, I did what anyone looking for a product did, I googled"
UK retailers that stock Dark Age" and I got this:
http://www.valiantwargames.co.uk/index.php/wargames-miniatures/dark-age.html It seems it is indeed available in the
UK. You should check it out, like I said, the 2nd edition rules are available in pdf form on their website.
Edit: I see you've edited your response, but 'uncommon' doesn't mean not available in the
UK, nor does it mean US exclusive.