Amanda Blanc says flooding threat is ‘absolutely increasing’, as she also warns ministers over ‘kite flying’ before budget

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The boss of Britain’s biggest insurer has warned that homes being built now could become uninsurable in the future because they are sited in flood-risk areas.

Amanda Blanc, the chief executive of Aviva, said the flooding threat was “absolutely increasing”. Assuming current construction patterns continue, 115,000 homes will be built in flood zones in the next decade.