1. The Thames Barrier was closed on Thursday and Friday last week, due to severe flood warnings.
The Thames Barrier is one of the largest movable flood barriers in the world. It protects almost 50 square miles of central London from flooding caused by tidal surges.
2. Had the 520m barrier not been closed, this is how London could look.
The picture was released by the Environment Agency to show what flash flooding could do to the capital.
“We estimate that at least 800,000 homes and businesses have been protected by flood schemes in the past 24 hours,” said Dr. Paul Leinster, the Environment Agency’s chief executive.
3. 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.