The Thames Barrier has reopened after shutting earlier due to high waters.
Further storms are expected in the next 24 hours.
The #ThamesBarrier is now open. We may have further closures over the next few days as the flow upstream remains high.
More top news
Before the final declaration on Friday, the Conservative candidate looked set to lose the City Hall race to Labour's Sadiq Khan.
The Tooting MP has been the frontrunner in the counting process ahead of Tory challenger Zac Goldsmith.
It's not just London where elections have been taking place today. There were council elections taking place across the home counties.