No, we don't mean they're forbidden from buying up property. They do that all the time, and they have lots of it. Bizarrely, the Queen has apparently declared that the board game Monopoly isn't to be played in her presence, whether at Christmas or at any other time!
The news comes by way of Prince Andrew, who was visiting a factory in 2008, and was presented with the board game. He was pleased with the gift, and noted that they weren't allowed to play the game 'at home', because it 'always gets too vicious'. It's possible he was joking, of course, but we quite like the idea that one of the Royals lost one property too many, ended up in jail too many times or landed on Mayfair and found it full of hotels. We wonder who flipped the board over and walked out? Prince Phillip?