Penny, thanks for the detailed info on this particular flood. We don't get all the details aver here. And the SE is sinking. It's all due to plate tectonics. England is tilting. The NE is rising and the SE is sinking. Roman London is now many (I think about 20) feet below sea level.
Poet, The weather changes due to global warming were predicted way back in the Fifties, long before the Thames Barrier.