The Met Office have made another severe weather warning, saying heavy rain could hit Bank Holiday plans in London and the south east tomorrow.
In a statement, they said: "Areas of heavy rain and thundery showers will affect parts of southern and central Britain on Saturday.
"The public should be aware that this may cause local disruption, primarily to Bank Holiday travel and outdoor events."
Their forecast said: "A complex area of low pressure will generate areas of heavy rain during the morning, the brighter skies that follow then encouraging formation of thundery showers across southern areas during the afternoon.
"Totals of rain could exceed 20 to 30 mm in just a few hours, possibly very locally in excess of 40 mm. Not everywhere will receive these totals, but where they do occur, surface water may affect travel.
"Details of heavier rain within this broad area remain difficult to pin down, and may be revised early on Saturday."