The Environment Agency has declared a 'flash drought' for London and seven other regions across central, eastern and southern England, as the UK endures its fourth heatwave of 2026. The affected areas include London, East Anglia, Hertfordshire, Thames Valley, Hampshire and the Isle of Wight, Devon and Cornwall, the West Midlands, and Wessex.
What is a flash drought?
A flash drought develops quickly due to a combination of low rainfall and high temperatures, despite a very wet winter. This marks the second consecutive summer drought, with three droughts occurring in the past five years. Water minister Emma Hardy warned that droughts are becoming increasingly common due to climate change, and the government is investing in new infrastructure, including nine new reservoirs, to prepare for this 'new normal.'
How does drought impact people and wildlife?
According to the Environment Agency, droughts can cause significant economic impact, including crop failures and reduced crop yields, which can lead to food shortages and price increases. Livestock health can also suffer, putting further stress on farmers. Dry grassland increases the risk of wildfires, endangering human, animal, and plant life, and can destroy homes and businesses. Extreme heat and dry conditions can cause ground shrinkage, damaging roads and railway lines. Low river flows negatively impact fish populations by disrupting migration and concentrating pollutants. Ultimately, droughts can lead to a loss of biodiversity as habitats become unsuitable for native plants and animals.
How do hosepipe bans help?
Most of London is under a Thames Water hosepipe ban, which prohibits the use of hosepipes, sprinklers, or jet washers for indoor and outdoor cleaning, watering gardens, cleaning cars, or filling paddling pools. Exemptions apply for medical reasons or businesses like garden centres. Thames Water stated that falling reservoir levels and increased water use due to hot weather necessitate the ban to ensure sufficient water for essential needs. The ban, in place since July 21, has no set end date, and repeated violations can result in a fine of up to £1,000 in England and Wales.
