A yellow weather warning is in place for London and the south east.
The Met Office issued the warning after many parts of the south east experienced heavy rainfall and localised flooding.
In the past 24 hours, up to 25mm rain has fallen across the region and the Met Office is warning of potential disruption.
The Environment Agency has issued a specific flood alert for the River Roding.
Areas affected include Abridge, Loughton and Buckhurst Hill.
The Agency has warned river levels are still high on the River Roding in the Abridge area.
Flooding to low lying land, roads and gardens next to the river is likely and surface water flooding is expected.
An update on the flood alert is expected this evening.