hi, can i play a us MW3 disc on a uk xbox?
Only if it is a region-free disc.
no you cant activision games arnt region free
Also i dont even think mw3 has gone gold yet
www.play-asia.com tends to be good for telling you the compatibility of games between regions.
all of the cod games released so far have been region free,infact most if not all activision games are region free .