Press Association: One in six homes in England is at risk of flooding, the Environment Agency warned today. And with climate change likely to raise the risk of flooding through rising sea levels and more rainstorms, £20bn needs to be invested in flood defences to protect properties in the next 25 years, the agency said. As many as 5.2m properties are already at risk of flooding, with 2.4m threatened by rivers and the sea, and a further 2.8 million at risk from surface water flooding from …