Shocked to see this premiering on CH4 to be honest. It just goes to show how little the BBC are interested in showing the big Hollywood blockbusters. CH4 will probably cut it and stick adverts in right after the opening credits. They'll ruin it.
I think you are getting itv confused with c4. Sure c4 will have to air it with ad breaks... its a commercial tv channel... But they rarely (note the word 'rarely') cut films to bits. In fact, of the main channels they are the best at showing movies in their CORRECT RATIO and UNCUT.
ITV on the other hand... Well I really do not know why they even bother.
The BBC already has a contract with Disney... That must have cost them a few bob. Unfortunately, ITV have a contract with warner bros... I dread to think what they'll do when they show The Dark Knight... They'll probably put it throw the shredder.