Corrections Regulations 2005, reg 152, Schedule 7
You’ll be given a written notice that sets out:
details of what the prison claims you’ve done
the rule that you’re charging with breaking.
The prison will hold a disciplinary hearing where you’ll be able to have your say and explain what happened. The hearing will be held by a Hearing Adjudicator or a Visiting Justice (who these two officials are is explained below).
You can’t be punished unless a hearing has been held and you’ve either pleaded guilty or been found guilty. You must be found guilty “beyond reasonable doubt”, which is the same test as for criminal charges.