and what exactly does your NI number show rocky?
I dont think it shows your criminal record, does it??
There was going to be a central database, where people needing CRB checks for their jobs were going to have to have their own checks done and be entered into a central checking system. They would be given a pin which they gave to potential employers to check they were CRB checked and what standard of check they had (cannot for the life of me remember what this database was going to be called!)
It seems this is not going to be introduced any more, no idea why, but it isn't