Stuart Staniford is my hero. Another astonishingly good analysis from him here, but this one looking not at Peak Oil but at sea level rise.
Bottom line - the sea level rise will happen more swiftly than expected, and be larger.
Which means for Mersea residents - much less reliable use of the Strood, beginning now. And probably no use of the Strood, in a couple of decades or so. And the bottom of the Lane will be unliveable. I wonder if where I live will become beach front property? (We're about 10-15 feet above high tide level, I'd guess)