The UK’s climate advisers have warned that the country is unprepared for the growing impact of extreme heat, flooding and drought, following the hottest UK summer ever recorded in 2025.
According to the Climate Change Committee (CCC), the UK must urgently adapt its infrastructure, workplaces and public services to cope with rising temperatures and the growing impact of extreme weather.
The warning follows provisional figures from the Met Office confirming that summer 2025 was officially the UK’s warmest on record, with average temperatures reaching 16.1°C, surpassing the previous record set in 2018. Climate scientists also stated that summers this hot are now around 70 times more likely due to human-caused climate change.
In its latest report, A Well-Adapted UK, the CCC warned that the “British way of life” is under threat unless adaptation becomes a national priority. The report outlines how heatwaves above 40°C could become common by 2050, bringing serious consequences for health, infrastructure, food security and productivity.
One of the most significant recommendations is the introduction of maximum workplace temperature limits in the UK. Baroness Brown, Chair of the CCC’s Adaptation Committee, has argued that the country must start preparing for conditions more commonly associated with southern Europe.
The CCC estimates that heat-related deaths could rise to around 10,000 per year by 2050 without intervention. Currently, heat is already linked to between 1,400 and 3,000 deaths annually in the UK.
The report also highlights the wider operational impact of climate change across the UK:
- Around 7 million properties are already at risk of flooding
- Summer water shortages could exceed 5 billion litres per day by 2050
- Nearly all UK homes could face overheating risks by mid-century
- Crop failures, drought and wildfires are expected to increase
- Schools, hospitals and transport infrastructure are increasingly vulnerable to extreme heat
The CCC argues that adapting now will be significantly cheaper than dealing with the long-term cost of inaction. The committee estimates the UK may need to invest around £11 billion annually in climate adaptation measures, but warns that climate damage could otherwise cost the economy up to £260 billion per year by 2050.
The conversation around workplace temperatures is becoming a major issue for employers as rising heat increasingly affects day-to-day working conditions across the UK. Higher temperatures can reduce concentration, increase fatigue and place additional strain on employee wellbeing, particularly for outdoor workers, industrial settings and workplaces with poor ventilation or ageing infrastructure. As extreme heat becomes more common, businesses are likely to face growing pressure to review workplace safety measures, cooling systems, flexible working arrangements and wider health and safety policies to ensure staff can continue working safely and productively.
The CCC’s recommendations reflect a broader change in thinking around climate resilience. Climate adaptation is no longer being framed solely as an environmental issue, but as a major health, operational and business continuity challenge that organisations across every sector will need to address.
As the UK experiences more frequent extreme weather events, businesses may need to review how prepared their workplaces, risk management processes and emergency procedures are for rising temperatures and changing climate conditions.
