Westminster scandal?

I'm getting very perturbed by the way MP's, and other's, lives are being picked apart by the media based mainly, as far as one can see, on rumour. point scoring and blatant opportunism.  The cry you keep hearing is that there is no independent body to whom people who claim to have been improperly assaulted can go and complain.  Yes there is. it's called the Police! Perhaps the question is - why haven't they used it?