Top Alternatives of Google AdSense Ad Network are:
Buy Sell Ads
Media.net (Yahoo! Bing Contextual Ad Network)
Mad Ads Media
Advertising.com
Adversal
Value Click Media
Tribal Fusion
CPX Interactive
Infolinks
Kontera
Of course, you can see in all is there any chanced to target only EU users, but I think you can in most of them. Personally, I will try with Media.net (Yahoo! Bing Contextual Ad Network) and see the market share of the it in every single county. I know that the % is not more than 10%, but 10% is something. Google rules the EU for now. You can also use:
http://marketshare.hitslink.com/search-engine-market-share.aspx?qprid=5
See also: zanox.com
Good luck.