Fortunately London isn't too bad so far, though people are making anxious noises about the Thames overflowing downstream from the Thames Barrier. Also fortunately, my bit is on a gentle rise, high enough above sea level that flooding is VERY unlikely, and we still have pretty good Victorian sewers. Though knowing the crapness of Thames Water, who supply most London homes, any time now they'll tell us that the water isn't safe to drink or impose a hosepipe ban!