Don't know if this was already posted, so....
Go to this website: http://www.fileplay.net/keys/warhammer
If all the keys are taken in England country...then click on other countries to obtain an Open Beta. I clicked on France I believe..
After receiving a key, you will be downloading the EU Open beta anyway. That is what I'm currently doing. Have fun.
Don't forget to register for Warhammer at http://www.war-europe.com/





and they could have fixed it before the ob release.