The recent National assessment of flood and coastal erosion risk in England 2024 reveals that more than half a million properties in London are at high or medium risk from surface water floods, highlighting the city’s vulnerability due to inadequate drainage systems.
With 543,500 properties in London facing high or medium risk of surface water flooding—accounting for 13% of all properties—the report emphasizes that urban areas are particularly susceptible to this increasing threat.
The upgrade in data accuracy vastly informs flood risks, noting a significant increase in properties exposed to flooding, with projections estimating eight million could be at risk by the mid-century due to climate change.
Although London displays a considerable risk from surface water flooding, it is noteworthy that only a small fraction of properties are at high risk from rivers or the sea, making governmental flood assessments crucial for property owners.
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