Jeremy..
There are lots of big contest club stations in Europe… Here are some that I found surfing the net for some common contest calls. These guys are serious !
Jeff KU8E
RL3A - http://www.rk3awl.ru/index-e.php
DR1A - http://www.df0cg.de/en/
RU1A - http://www.ru1a.mirradio.ru/photogallery.php
OH8X - http://www.radioarcala.com/
RD3A - http://rd3af.com/?lng=en
HG1S - http://www.mttosz.t-online.hu/ANGOL/hg1s/hg1s.htm
TM6M - http://electrans.brest.free.fr/TM6M/?page_id=14
4O3A - http://www.4o3a.com/
DF0HQ - http://www.df0hq.de/
9A1A - http://www.eham.net/qslmgr/result?Callsign=9A1A
OM7M - http://www.gallery.om7m.org/
IR4M - http://www.ir4m.it/
IR4T - http://hamgallery.com/gallery/I/ir4t3.htm