Mudlogger wrote:
"And anyway, what will we have to trade for food?"

Same as we always have -  weapons of mass destruction, weapons of small scale destruction, defences against the above. People who know how to use the above. Insurance. Game show formats. New product research and development. GCSE, A-levels and degrees. The world most famous auction houses (Sotherbys and CHristies), merchant banking,...I could go on all day...

 and if you want to get a bit more physical...

of course , most of that is made in China, but its all sold in Windsor - and the retailer makes the most profit out of it. No reason why most of it shouldnt be made locally. Theres plenty of clay directly under the shop which could be used to make figurines. Not that I think that will be neccessary. Theres always going to be an international trade in high value tat that doesnt go off. Things like fresh apples from New Zealand are going to be the problem.

"Where there are castles, there will be tourists. Where there are tourists there will be fudge"