Corrections Regulations 2005, reg 164
In that case just write the name of the person on the form, but don’t write any details about the complaint. As soon as the person sees that the complaint involves them, they must pass the form on to someone else, who will then ask for details about the complaint.
If you don’t want to give the form to the person who’s named on the complaint form, you can ask to see the prison manager or contact the prison inspector directly. You must be allowed to use a phone so that you can contact the prison inspector.