More than 730,000 people live dangerously exposed to the worst impacts of flooding in the most vulnerable communities.
Not only are these households on the lowest incomes but they are also most at due to their location and a lack of flood defences.
The highest number of at-risk neighbourhoods in England are in Birmingham with 309, with 139 in Manchester, 111 in Liverpool, 94 in Bradford and 80 in Hackney, East London.