Heavy downpours and thunderstorms have caused severe flash flooding in parts of London.
The fire brigade said it had taken about 300 calls – mostly about flooded basements or roads – on Sunday afternoon.
An amber thunderstorm warning is in place for much of south-east England, with 75 to 100mm (3in to 4in) of rainfall forecast in some areas.
Officials have advised against travelling in the hazardous conditions.
Many roads in the capital are closed because of the flooding, including the Blackwall Tunnel, the A12 and parts of the North Circular.
There are long delays on other routes.Eight Tube stations and one Overground station are also closed.
The Environment Agency issued two flood warnings for areas in London near Beverley Brook in Worcester Park and West Barnes.
A further 14 less severe flood alerts have also been issued, covering most of the capital and parts of surrounding counties.
BBC