The UK faces growing disruption from heatwaves, flooding and drought, according to a major new report from the Climate Change Committee (CCC), which warns the country is not adapting quickly enough to climate change.
The report, A Well-Adapted UK, says the impacts of climate change are already affecting homes, infrastructure, healthcare, farming and businesses across the country and that the risks will increase significantly by 2050 without urgent action.
However, the CCC also argues that a more resilient UK is “achievable”, with proven and cost-effective adaptation measures already available today.
Heat, flooding and drought identified as the UK’s biggest climate risks
The report identifies three priority climate threats facing the UK by 2050:
- Intensifying heatwaves
- Growing flood risk
- Rising drought and water shortages
The CCC warns that by mid-century:
- 92% of homes could overheat
- Peak river flows could rise by up to 45%
- Water supply shortfalls could exceed five billion litres per day
The report also warns that temperatures above 40°C could become increasingly common in southern England, with some future heatwaves potentially exceeding 45°C.
Meanwhile, flood risk is expected to rise sharply due to heavier rainfall, rising sea levels and more intense storms, while hotter, drier summers are increasing the risk of drought and wildfires across the UK.
The cost of doing nothing could be far greater
The CCC estimates that adapting the UK to climate change will require around £11 billion of annual investment, shared broadly between the public and private sectors.
However, the Committee argues the economic case for adaptation is strong.
Without sufficient action, climate change could cost the UK between 1% and 5% of GDP annually by 2050. The report also highlights evidence showing that many adaptation measures generate significant long-term returns, including flood resilience, heatwave planning and water efficiency measures.
According to the CCC, the challenge is now deploying the available solutions quickly and at scale.
Cooling, flood protection and water resilience are top priorities
The report calls for immediate action across several key areas.
To protect people from extreme heat, the CCC recommends increased investment in cooling measures for hospitals, schools, care homes and other public buildings. This includes passive cooling such as shading and ventilation, alongside active cooling technologies including air conditioning and heat pumps.
On flooding, the Committee says annual flood resilience investment must increase to between £1.6 billion and £2.2 billion each year to stop risks worsening. It also calls for stricter planning rules to prevent inappropriate development in flood-prone areas.
Water resilience is another major focus. The report urges faster progress on reducing leakage, improving water efficiency and investing in reservoirs and water transfer infrastructure to avoid severe shortages in future decades.
Climate adaptation is about more than infrastructure
The CCC stresses that climate adaptation needs to prioritise safeguarding health, food security, businesses and everyday life.
The report highlights growing risks to farming, insurance markets, food supply chains and critical infrastructure systems. It also warns that climate impacts can “cascade” across sectors, creating wider disruption to transport, energy, communications and public services.
Baroness Brown, Chair of the Adaptation Committee, said the UK still has an opportunity to protect “the people and places we love” – but only if government, businesses and households begin preparing now.
A critical decade for UK climate resilience
The CCC says the next national adaptation plans, expected in 2028, will be a major test of whether the UK is serious about preparing for climate change.
The Committee is calling for clearer national targets, stronger delivery plans and better accountability across government.
The UK’s climate is already changing – and the decisions made this decade will determine how resilient the country is in the years ahead.
