Drought sends small business insurance costs soaring

First the ground cracks — then the insurance bill lands

England’s worsening drought is no longer just an environmental emergency. Record subsidence claims, rising flood damage and soaring rebuilding costs are pushing up insurance premiums and leaving small businesses facing tighter cover. Even firms outside drought-hit regions could end up paying the price.

DROUGHT IS DRIVING UP INSURANCE

England’s worsening drought is becoming a major cost shock for small and micro businesses as insurance premiums surge across property, business interruption, and specialist cover.

With over half of England officially in drought and the country experiencing its third drought in five years, insurers are warning that the risk profile for thousands of businesses has fundamentally changed.

The consequences are already showing up in premiums, exclusions, and renewal pricing. and there is a knock-on impact on prices for businesses around the whole of the UK as the big insurers operate around all 4 nations.

Subsidence

Subsidence is now the top risk and it’s hitting insurers hard.

• Subsidence claims reached £153m in the first half of 2026.

• The average settled subsidence claim is now £17,820, the highest on record and up 9% year-on-year.

• 2025 saw a record £307m in subsidence payouts and insurers expect a repeat pattern.

Clay-rich soils, common across southern and eastern England, shrink in drought and swell again when it rains, causing structural movement under buildings. For small businesses operating from older premises, heritage buildings, or converted units, this is a direct hit to insurance costs.

Double Whammy

Months of drought have left the ground hard, meaning when storms arrive, water can’t soak in. This causes flash flooding on top of the subsidence risk and that’s a lethal combination that few insurance policies were designed to cover. The average claim for flood, storm and burst-pipe damage has risen to £8,548, up 12% year-on-year.

For microbusinesses, this means higher premiums, more exclusions, more complex renewal negotiations and the increased risk of being underinsured.

Rebuilding

The Building Cost Information Service (BCIS) warns that drought is making underinsurance more common, meaning many businesses don’t have enough cover to rebuild after damage. Climate-related risks are rising, materials and labour costs are soaring and regulatory changes are increasing the complexity and costs of rebuilding.

This is especially dangerous for microbusinesses with older premises, specialist materials, heritage locations and limited cash reserves. If a building suffers subsidence or flood damage, the payout may not cover the full cost of repair.

Higher premiums at renewal

Insurers are adjusting underwriting appetite in drought-affected regions, especially London, East Anglia, Hampshire, Isle of Wight, Southwest England and the West Midlands. However, the knock‑on effects won’t stop at borders. Even areas where there is no drought will feel the consequences through pricing, risk modelling, supply chains and insurer behaviour. England’s drought isn’t just an English problem. It’s a UK‑wide insurance issue.

If Wales, Scotland and Northern Ireland avoid severe drought this year, they will still face:

• higher premiums

• tighter underwriting

• more exclusions

• rising rebuild costs

• increased subsidence modelling

• and greater risk of underinsurance.

For small and micro businesses this means higher costs and tougher trading conditions making them more vulnerable. Climate risk is now a national pricing issue, not a regional weather event.

Businesses now face higher insurance prices and more difficulty in getting cover:

More exclusions and tighter wording

Policies increasingly exclude:

• surface water flooding

• ground movement

• heave

• subsidence linked to drought

• storm damage on drought-hardened ground

Flash flooding is not always treated the same as river flooding, a major risk for small businesses.

Increased risk of business interruption

Water-dependent businesses such as laundries, food production, florists, construction trades, face supply disruption, equipment damage, higher downtime and reduced access to premises and insurers are pricing this into premiums.

Difficult renewals

Brokers warn that businesses on clay soils or near heathland/woodland have a narrow window to act before conditions shift again.

The new normal

England’s drought is reshaping the insurance sector, and small businesses are on the frontline. Premiums are rising because subsidence claims are at record highs, drought and flash flooding risks now overlap, rebuilding costs are outpacing the sums insured and insurers are tightening underwriting in high-risk regions.

For small and micro businesses, this means higher costs, more exclusions, greater underinsurance risk, tougher renewal negotiations and increased vulnerability to climate shocks.

This isn’t a one-off event. It’s the third drought in five years, and insurers are pricing in a future where drought is normal rather than exceptional. The result is adding up to be an insurance crisis that hits the smallest businesses hardest.