Kerre Woodham: Should convictions for violence be public record?

Now, surely, it should be a straightforward exercise. You're about to embark on a relationship with someone, and you want to do a police check. Does this person have previous convictions for violence? Seems charming, seems a lovely, but you hear horror stories. So, why wouldn't you want to check on somebody before you invite them into your life? Why can't you know? Surely, once you have a conviction for an offence, it becomes a matter of public record.