Samsung has always been known to spread its Galaxy series onto every carrier possible, and the Galaxy SIII’s situation is no different. Vodafone, O2, and Three are all offering the Galaxy SIII for pre-order in the UK. Vodafone is the only one to have the 32GB model though, so the others will have to just fill up on MicroSD cards.
The three carriers include a variety of different plans to go with your new phone. Depending on the plan, you can get the SIII from for free to £219. Hit the source links for the sites