Surely, something of this magnatude, which could affect everybody, should have been put to a referendum, not just 600 or so MP's to put their own personal feelings in a vote. It reminds me of an interview on TV years ago during the debate on the return of capital punishment. An MP was interviewed on that grass bit outside the Houses of Parliment, which way he would vote. He said he would follow the party line, against. It was pointed out to him a survey of his constuancy found that 85% of the constituents were in favour of restoration. His answer was, again..I will follow the party line.
I know this was a free vote....but that still does not stop an MP voting on their personal belief and not that of the people they represent.
I know you can't have a referendum on everything, but most of the stuff they go on about is crap anyway.