Birmingham is among the top 20 places in Britain most at risk from flooding, according to new research.
Analysis of official data by Channel 4's Dispatches revealed Boston in Lincolnshire - which has a population of about 65,000 and where nearly 16,000 properties (57 per cent of homeowners) are at "significant risk" - to be the most susceptible to flood waters.
Birmingham was ranked 12th in the table with 6,497 homes (1.4 per cent) at significant risk.
In tonight's programme, the chief executive of the Environment Agency, Baroness Young, calls on insurers to refuse insurance to houses built on floodplains against advice.
Dispatches: Britain Under Water claims an increasing number of new homes are being built on Britain's floodplains. This has led to a surge in the number of homes at "significant risk" of flooding - described as having a one in 75 chance of flooding in any given year.
The programme reports that in addition to the potential threat to homes, more than 2,000 energy installations are at significant risk of flooding. Baroness Young suggests insurers could help the situation by hardening their stance against those opting to live in new builds in flood risk areas.
She tells Dispatches: "Many of the properties that flooded in the summer were built in the 60s and 70s and the 80s and we've got a huge backlog of that in the floodplain now and we don't want to increase that by building any more.