Rising Insurance Costs Amid Climate Risk Pose Broader Economic Challenges for the UK

The summer heatwave that swept southern England last week made clear how extreme weather has begun to affect everyday business operations and productivity.

Yet the economic consequences of the climate crisis extend far beyond the hours lost to sweat and the early dismissal of children from scorching classrooms.

Last week, two timely interventions – one from the finance lobby group TheCityUK, and another from Swati Dhingra, an economist and independent member of the Bank of England’s Monetary Policy Committee – underscored the need for a more proactive government role in mitigating climate impacts in the coming years.

These voices come as Andy Burnham moves closer to a position at Number 10, adding political momentum to the debate on climate‑related financial stability.

TheCityUK’s report, produced in collaboration with insurer Marsh, examined the growing challenge of insuring homes and businesses against the costs of increasingly frequent and severe weather events.

With wildfires, floods and other extremes becoming more common and intense, the report argues that insurers are struggling to price risk accurately, leading to expanding “protection gaps.”

It notes that “traditional actuarial methods – the backbone of insurance pricing – assume a stable probability of loss year to year. That assumption is becoming less reliable as climate hazards intensify, eroding the confidence insurers have in modeling future losses.”

This shortfall leaves many homeowners and businesses vulnerable, with possessions and livelihoods exposed in the event of natural disasters.

Because insurance plays a vital role in facilitating investment, TheCityUK warns that challenges in pricing climate risk will reverberate through the financial system, affecting bankability, investability and overall economic order. The association argues that the issue is “not simply a sectoral concern but a foundational one.”

Indeed, the climate‑driven financial strain has the potential to accelerate a broader economic crisis if left unaddressed.

The report contends that the private sector can help by developing climate‑resilience models in insurance, but that public or semi‑public backstops may also be necessary.

In a related vein, Dhingra’s speech highlighted how worldwide weather extremes, such as droughts and heavy rainfall, are pushing UK inflation.

She illustrated this by noting that “chocolate alone contributed approximately one percentage point to UK food inflation in 2025, driven by a surge in cocoa prices caused mainly by extreme heat in West Africa and the fact that chocolate represents nearly six percent of the UK food basket.”

Further evidence appears in a recent Energy and Climate Intelligence Unit analysis, which found that 13 percent of UK food imports last year came from the world’s least climate‑resilient yet most weather‑exposed nations.

These imports include rice from India, citrus and soft fruits from South Africa, Peru and Egypt, coffee from Vietnam and Brazil, as well as bananas from Colombia and Ecuador and tea from Kenya.

While price shifts for items such as a bar of chocolate or a basket of bananas may seem trivial, they reflect the harsh realities faced by workers in those importing countries, where the Energy and Climate Intelligence Unit estimates that agricultural labourers in the 15 most climate‑vulnerable nations lost 216 billion hours to heat stress in 2024.

When these price increases impact the UK, the Bank’s Monetary Policy Committee is expected to respond. However, Dhingra points out that raising interest rates to counter climate‑related inflation also raises the cost of borrowing for essential net‑zero and adaptation projects.

Similarly, using higher rates to curb inflation from volatile energy prices – such as those triggered recently by the Iran conflict – can dampen investment in renewable alternatives that would safeguard the UK against future geopolitical shocks.

Her argument is that monetary policy, alongside government tax and spending decisions, must work in concert to break this vicious cycle.

“Monetary policy remains essential for anchoring inflation expectations and preventing short‑term price shocks from permeating broader wage and price settings, but it is a blunt instrument for addressing relative‑price shocks arising from climate change, energy markets or the green transition,” she said.

Instead, she suggests that governments should be prepared to cushion consumers against these recurring shocks through targeted support measures, enabling the Bank to concentrate on the macro‑economic outlook and preventing knock‑on effects on green infrastructure investment. This could involve subsidies, price controls or temporary tax adjustments.

Having weathered recent economy‑wide shocks—from Covid to Ukraine to the Iran conflict—politicians now feel more confident intervening in markets in ways that were once taboo.

One of Burnham’s early decisions will concern the extent and timing of intervention this autumn to shield the public from the full impact of the Middle East crisis on energy bills.

But in an era of escalating climate emergencies, shocks are arriving faster and more intensely, demanding that policymakers act decisively—crucially while safeguarding the progression of the green transition.

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