[AnnieK]

Originally Posted by jet

Of course, people demand proof, and there is none that I know of that they actually did pay back the money for Frogmore.

There were plenty of articles at the time in the papers, broadsheets included and no-one refuted the claim. I'm sure some Royal source would have leaked it had not been paid if that was the case. Not sure what evidence there could be, they are hardly going to post the receipt