Never really realized this, I have just found an Italian BB forum which is talking about BBUK and they even mentioned it on Italian radio (I have an app on my phone), the radio is called Radio Deejay which is basically a radio with the commercial/club songs playing, so is like the Kiss 100 of Italy.
Here's the forum and the thread, quite interesting that we have Italian fans for the show
http://grandefratello.forumfree.it/?t=68808105
Italian BB finished last Monday so looks like more people are tuning into BBUK from there.