Torrential downpours and flooding have swamped parts of London and the South East in the early hours of EU referendum day, with the London Fire Brigade inundated with a day's calls in just 90 minutes.
An amber "be prepared" warning has been issued by the Met Office for the East of England and London and the South East.
The warning is effective for Buckinghamshire, Greater London, Kent, Surrey, Slough, Windsor and Maidenhead.
A yellow "beware" warning covering South West England and the East Midlands is also in place.
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.