I'm not posting this in the big deaths thread but there is an article on Digital Spy (I am so sorry, I don't know how to do links) stating that Peter survives and starts drinking heavily again once out of hospital.
No, it doesn't say. Peter ends up in a wheelchair though.
So deaths are Molly, Ashley and Charlotte with 1 to be announced - likely to be the person in the car with guesses that it might have been Jim. Suinta and Rita although in hospital are not out the woods yet I don't think!