The insurance industry said it has helped people hit by floods "speedily and effectively" after a meeting with ministers at Downing Street. Victims have received £14 million in emergency payments so far.
More than 2,000 insurance loss adjusters say they are "ready and waiting" to assess the damage when the flood waters had subsided sufficiently.
Some 1,800 staff have been reassigned to deal with customer queries.
The sheer scale of the likely claims has raised fears of rising premiums wiping out recent falls.
Summer floods in 2007 resulted in a hit of more than £3 billion.
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.