This Graphic Shows How London Could Have Flooded Without The Thames Barrier
Via the Environment Agency.
The Thames Barrier was closed on Thursday and Friday last week, due to severe flood warnings.
Had the 520m barrier not been closed, this is how London could look.
But although London was saved, the tidal surge caused chaos in some of the country's coastal areas.
It was the most serious tidal surge the U.K. has seen in over 60 years.