Thunderstorms bringing lightning and torrential rain to the south are set to continue until Monday, forecasters have said.
The Met Office has issued an amber warning for storms covering London and some of the Home Counties where homes and businesses are at risk of flooding, lasting until 7pm on Sunday.
A yellow warning for storms which could cause travel and power disruption also covers a wider area of the south from Norwich to Plymouth, and lasts until midnight.
Social media posts showed the capital in rising flood water on Sunday with the London Fire Brigade reporting around 300 calls.
In a tweet, a spokesperson said: “Our Control Officers have now taken around 300 calls to reports of flooding. Avoid driving or walking through flood water. Remember to only call 999 in an emergency.”
Meanwhile Wandsworth Police warned drivers to “remember that you’re not driving a submarine” and said that those with vehicles should “not enter what could possibly be deep water.”