Age of criminal responsibility

The Children's Commissioner for England has suggested that the age of criminal responsibility ought to be raised from 10 to 12. In view of the move in society generally to reduce benchmark ages should we really be looking to move the age of criminal responsibility down (perhaps to 8) rather than up (to 12)?

I would, however, agree with the commissioner that the focus of any such change should be restorative as opposed to simply punitive.