Agree. To further complicate the picture, most of London is very flat and lies between -3 and 9m of sea level[1] and we (are extremely lucky to) have a massive

Agree. To further complicate the picture, most of London is very flat and lies between -3 and 9m of sea level[1] and we (are extremely lucky to) have a massive tidal river running smack bang through the middle of the city. We already have a massive tidal barrier that protects the city from flooding at high tides [2]. For people who don't understand the problem the tideway addresses, it's not like we just pump sewage into the river, it's that when there is a lot of rain the sewers can flood with runoff and can flood into the river. [1] https://en-gb.topographic-map.com/map-kffs8/London/?center=51.49959%2C-0.12464&zoom=11 https://en-gb.topographic-map.com/map-kffs8/London/?center=5... [2] Which is an engineering marvel and quite beautiful in my opinion. A boat trip up to see it is well worthwhile during a visit for people who want to do things that are a little unusual https://en.wikipedia.org/wiki/Thames_Barrier https://en.wikipedia.org/wiki/Thames_Barrier