I can't say anything about the likelihood. All I can tell you is that I trust the members and their honour and integrity, and I would have to go with that.
Just as with anything else, when laws are put in place, they're not put in for the majority; they're put in for the exceptions, those who are going to break those laws. Overall, I have a lot of trust in members of Parliament, regardless of what party they're from or what their beliefs are. It is something that I believe is tantamount to being a member of Parliament.