High demand - well, about that I have no information. But that could always be possible.
Last winter, the crazy high prices for tomatoes, I read, were allegedly also due to suppliers from the UK buying a lot of them from the market because other markets either were closed to them ot there was some problem.
Result for the rest of Europe was that the prices climbed to heights.
If I remember correctly, for some other vegtables the prices in the UK were also exceptionally high.
So...
Well, that's a thought I also already developed.
Will see if anybody at any time gives me a hint or drop a note about this in his own area too.