I don't think Prince Andrew is a serious threat to the survival of the House of Windsor. Even as the Queen's second son, he's pretty low down the succession pecking order, below Charles, William, the infant Prince George and Harry. And after all, our history is littered with princes behaving badly. The real threat to the family firm is Andrew's big brother.
Without justice there can be no peace in Bahrain, and that won't change as long as the UK is happy to promote and provide political cover for an illegitimate government that is inflicting untold misery on its own citizens. Only by ending the political and military support that is strengthening the regime can the UK ensure that it is promoting human rights and acting the best interests of the people of Bahrain.