Sir David explained: “In the case of tsunamis, the shallower the waters are, the larger the wave will get. Once the tsunami passes through the English Channel and into the Thames Estuary, it will grow in size and cause all sorts of destruction in the city.”
As well as ripping apart thousands of homes and killing a significant amount of people, the scientist warns it would result in further ecological problems.
He added: “Salt water coming in from the sea could contaminate some fresh water reserves that Londoners use. There would be some ecological damage to wildlife too.
“On that note, the salt water would also saturate the soil around London.
“The change in salinity levels would mean farmers wouldn’t be able to grow crops in the area for many years afterwards, as has been seen in other tsunami-affected regions.”
