70% of UK Businesses Face Climate-Related Revenue Loss

Revenue losses now affecting majority of UK firms

Seven in ten UK businesses lost revenue to climate impacts over the past twelve months. The scale of those losses is significant. According to recent survey data, 70% of firms reported losing more than 1% of annual turnover, while 40% said climate-related disruption cut their revenue by 6% or more.

These figures mark a shift in how climate risk affects commercial operations. For years, environmental change appeared in corporate risk registers as a long-term concern. Now it shows up in annual accounts. Weather events, supply chain disruption, and operational interruptions are translating directly into financial damage.

The findings come from industry polling reported by BusinessGreen and Edie, with analysis published by Ecologi. The message is consistent across sources. Climate impacts are no longer a planning assumption for the future. They are a current drag on business performance.

Commercial losses reported across UK business base

The survey results highlight how widespread the problem has become. BusinessGreen described the data as showing a “vast majority” of firms facing climate-related disruption over the past two years. That disruption includes both lower revenues and higher operating costs.

Meanwhile, separate research from Gallagher found that 48% of UK businesses said they had already been affected by climate change. Of that group, 52% reported that extreme weather had directly impaired their ability to operate. The consistency between independent surveys suggests the trend is real and broad-based.

Another industry poll, cited by ENGIE Impact, surveyed 122 of the UK’s largest companies. More than two-thirds believed climate change posed a short to medium-term risk to their operations. However, 52% admitted they had done little or no work to prepare for those risks. The gap between awareness and action remains wide.

These findings matter because they connect climate risk to financial outcomes. Revenue loss of 6% or more is material for most businesses. It affects profitability, cash flow, and the ability to invest or hire. For smaller firms operating on tight margins, losses of that scale can threaten viability.

Weather disruption and supply chain fragility drive losses

The reported turnover impacts stem from multiple sources. Extreme weather is the most visible. Flooding, heatwaves, storms, and drought can halt production, damage stock, and close facilities. Each event creates direct costs and lost trading days.

Supply chain disruption is another major factor. Climate events in one region can ripple through logistics networks, delaying deliveries and raising costs. For businesses that rely on just-in-time inventory or international sourcing, those delays quickly translate into lost sales and higher working capital requirements.

Insurance costs are rising as underwriters reprice climate risk. Some businesses now face higher premiums or reduced coverage for weather-related damage. Others find certain risks are no longer insurable at commercial rates. That shifts financial exposure back onto company balance sheets.

Energy price volatility, partly driven by climate policy and transition dynamics, also affects operating costs. Manufacturers, logistics firms, and energy-intensive sectors face margin pressure when fuel and electricity prices spike. Those cost increases can be difficult to pass on in competitive markets.

The cumulative effect is that climate risk now touches multiple parts of the business model. It is not confined to environmental compliance or corporate reporting. It affects procurement, operations, insurance, and working capital. Consequently, it requires attention from finance teams and operational management, not just sustainability leads.

What the data tells us about business resilience

Several important points emerge from the survey findings. First, climate impacts are already affecting a majority of UK businesses. This is not a future scenario. It is current financial performance. Second, the losses are material. A 6% revenue hit is enough to wipe out profit margins for many sectors.

Third, preparation remains inadequate. Despite widespread awareness of climate risk, many businesses have not yet taken action to reduce their exposure. The gap between recognition and response suggests that adaptation planning is often delayed or under-resourced.

Fourth, the issue crosses sectors and business sizes. While the largest firms may have more resources to respond, they also have more complex supply chains and greater exposure to global disruption. Smaller firms may be more agile, but they often lack the capital to invest in resilience measures.

The financial impact of climate disruption is likely to increase. Weather patterns are becoming more volatile. Supply chains remain stretched. Insurance markets are repricing risk. Regulatory requirements are tightening. Businesses that have already lost revenue to climate impacts are likely to face further losses unless they take steps to adapt.

Key points from the research

• 70% of UK businesses lost more than 1% of annual turnover to climate impacts in the past year, according to recent survey data.
• 40% of firms reported revenue losses of 6% or more due to climate-related disruption.
• Separate polling found that 48% of UK businesses said they had already been affected by climate change, with 52% of that group reporting extreme weather had impaired operations.
• Among 122 of the UK’s largest companies, more than two-thirds identified climate change as a short to medium-term risk, yet 52% had done little or no preparation.
• Climate impacts now include direct revenue loss, higher operating costs, supply chain delays, increased insurance premiums, and energy price volatility.

Adaptation planning moves from optional to essential

The survey data underlines a shift in how businesses should approach climate risk. Adaptation is no longer a discretionary investment. It is a question of financial resilience. Firms that fail to prepare are likely to see repeated revenue hits as weather volatility and supply chain fragility increase.

Practical adaptation measures vary by sector and risk profile. For some businesses, it means diversifying suppliers to reduce dependence on vulnerable regions. For others, it involves investing in flood defences, cooling systems, or backup power. Physical infrastructure upgrades can be expensive, but they may cost less than repeated operational shutdowns.

Supply chain mapping is another priority. Businesses need to understand where their critical inputs come from and what climate risks affect those sources. Tier-two and tier-three suppliers are often the weak points. A factory shutdown in a distant country can halt production at home if there is no alternative source.

Insurance and financial planning also need revisiting. As climate risk becomes more apparent, traditional insurance may become less available or more costly. Businesses should review their coverage, understand exclusions, and consider whether they need to self-insure for certain risks. Financial modelling should include scenarios for climate-related disruption, not just economic cycles.

Some firms are starting to integrate climate adaptation into capital planning. When deciding where to locate new facilities, they factor in flood risk, water availability, and temperature extremes. When choosing suppliers, they assess climate resilience alongside price and quality. These decisions take longer upfront but reduce exposure over time.

Regulatory drivers are also pushing adaptation up the agenda. ESG compliance and carbon reporting requirements now cover climate risk disclosure for many businesses. Investors and lenders are asking more detailed questions about how companies are managing physical climate risks, not just their carbon footprint. Public sector suppliers face net zero procurement criteria under PPN 06/21, which include resilience expectations.

Despite these pressures, many businesses remain underprepared. The survey showing that 52% of large firms had done little or no work to address climate risks is striking. It suggests that awareness has not yet translated into investment. That gap may reflect competing priorities, capital constraints, or uncertainty about which measures will be most effective.

However, the cost of inaction is now measurable. Revenue losses of 1% to 6% are concrete numbers. They appear in management accounts and board reports. As those losses recur and potentially grow, the business case for adaptation strengthens. Finance directors and operational teams are starting to see climate resilience as a core risk management issue, not an environmental add-on.

Useful resources for understanding climate business risk

The UK government’s climate adaptation framework is set out by the Department for Energy Security and Net Zero, which publishes guidance on climate resilience and risk assessment. Businesses looking for practical tools can also refer to the Environment Agency’s resources on flood risk and environmental hazards.

For sector-specific insight, the Chartered Institute of Procurement and Supply offers guidance on building supply chain resilience in the context of climate risk. The Institute of Environmental Management and Assessment provides professional standards and training on climate adaptation planning.

Businesses seeking support with carbon reporting, climate risk assessment, and net zero strategy development can find structured guidance through professional advisory services. Understanding your exposure is the first step. Measuring it, planning for it, and investing in resilience are what follow.