Towns may have to be abandoned due to floods with millions more homes in Great Britain at risk

Millions more homes in England, Scotland and Wales face devastating floods, and some towns may have to be abandoned as climate breakdown makes many areas uninsurable, a Guardian investigation has found.

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Densely populated areas including London, Manchester and parts of north-east England, are likely to be worst hit. Experts also say London’s flood defences need to be updated urgently to protect the capital from devastating floods.

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Tenbury Wells, a market town in Worcestershire, has become the first in the country to find that its public buildings are uninsurable. The town has historically suffered damaging floods about once a decade, but in the past six years people there have been hit four times.

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We can’t keep building defences taller and higher to deal with larger and more frequent floods. Working with natural processes, such as reconnecting rivers to their floodplains, restoring wetlands, and planting woodlands to intercept rainfall have the benefits of improving our natural environment alongside reducing flood risk.