Article in this week’s FG about how the Dutch dammed a bay of the North Sea to create Lake IJssel - a freshwater reservoir used to hold floodwater from inland rivers and also used for irrigation during summer, could we not do this here with the Wash, it is perfectly placed near to most of the veg growing land in the country and naturally shaped to make it relatively easy to do as 3 of the sides are already there, plus most of the drainage channels and rivers that cross the Fens flow into it, there is also a massive amount of silt and sand in the Wash that could be dredged to form the barrier.