I think this sentence would be better this way:

Living on Queen Elizabeth's realm, and using an old verion (<2.8), aren't you? There is a workaround for it since version 2.8, but there is no guarantee it will work. Check out the <a href=http://en.wikipedia.org/wiki/Websites_blocked_in_the_United_Kingdom>Black list</a>.

I'm actually not a native speaker, but I think this sentece sounds OK