In Australia, you don't have anywhere near the amount of rain that we get in Britain though. How we can have the wettest summer since records began, then follow that up with a possible drought is beyond me.
A dry winter will easilly do that. In the summer, a lot of rainfaill is evaporated- it is the winter rain that is critical to overall water reserves. And parts of the UK are not as wet as you think. SE england gets less rainfall than many parts of the Med. Parts of Eats Anglia average 300mm a year, 200 mm a year is considered a desert! Londnon, gets half the rainfall of a place like san Francisco.