The somewhat official twitters for the cast and crew of Narnia! The list will be updated if any more accounts are created. Click on their names for the link.
William Moseley - Peter Pevensie
Will Poulter - Eustace Scrubb
Warwick Davis - Nikabrik
Eddie Izzard - Voice of Reepicheep in PC - ✔
Simon Pegg - Voice of Reepicheep in VDT - ✔
Zack Kibria - Dawn Treader Soldier
✔ = Verified
Some of the users on this list aren’t verified so be cautious!