I for one would be most interested to hear what the reaction of the German people is.

And in particular, are significant numbers of people actually following the advice to stock up on food and water.
Most large retailers in the UK only keep an average of a few days stocks. So if just 10% of the population go out and buy 10 days reserve, then retail stocks are significantly depleted.

I would not expect panic, or stores to be stripped bare, but would expect localised and short term shortages of some non perishables.