So, does the Judge have a guilty & not guilty speech prepared?
Whether or not they agree is not the issue in law. If, for example the accused is acquitted when there is sufficient evidence to prove or disprove his guilt the judge may, in his summing up, before the jury retires to consider their verdict, give guidance to the jury. Once the verdict has been returned the judge may only apear surprised if a guilty man has been acquitted or give as lenient a sentence as possible in the case of an innocent, in his opinion, man found guilty. Generally you only need a speech for a guilty verdict – to explain and affirm the gravity and the sentencing.