Ok, so I know for a fact, from abethesda email, that the UK version of the game will include only english.

I am going to buy it in SPAIN, and we get effed up pretty frequently with bethesda. They do not release their games with the original VO included.

I find it a must to play this game with english Voice Overs. Since it is fitted into 3 DVD I don't think there would be problems with space. PS3 versions of Fallout do not include english and there is NO WAY a space problem with blu ray.