This Environment Agency picture shows the effects that the largest tidal surge in 60 years would have had on London if the Thames Barrier hadn't been closed.
Thousands of people were evacuated from their homes down the east coast of the country during storms last week.
But the 520 metre barrier saved London from the worst effects when it was shut on Thursday and Friday.
More top news
The toddler was taken to hospital along with two girls, aged five and six, and a woman who was also injured.
London's smallest pub is set to start pulling its first pints in a shed in Greenwich.
A controlled explosion was carried out after officers were called earlier today to north Greenwich.