I want to know the answer to the following question:
Who would prefix Sir, and Dames Grand Cross?
All the background I'm provided with is that "Clergy of the Church of England or the Church of Scotland do not use the title Sir or Dame as they do not receive the accolade (i.e., they are not dubbed "knight" with a sword), although they do append the post-nominal letters.". Is that enough to answer the question?
Answer: no