Carbon credits added £1.2bn to the UK economy

Research quantifies carbon credit sector contribution

The UK carbon credit economy now generates £1.2 billion in annual value and supports more than 11,000 jobs. These figures come from new research published by the City of London Corporation and the UK Carbon Markets Forum. The report offers the first detailed analysis of how the sector contributes to the wider economy.

Between 2023 and 2025, investors committed $3.5 billion to UK carbon projects and businesses. Much of this capital flowed into rural land management, farming systems, and nature-based climate solutions. For businesses considering carbon reduction strategies, these figures reflect a market that has moved beyond theoretical debate into substantial commercial activity.

The global carbon credit market currently stands at $1.4 billion. However, projections suggest dramatic growth potential depending on policy development and market demand. By 2050, the market could reach anywhere between $15.8 billion and $267.9 billion.

Where the economic value comes from

The carbon credit sector creates economic activity through several channels. Project developers generate revenue by creating verified carbon removal or reduction credits. These projects often involve woodland creation, peatland restoration, or agricultural practice changes. Rural landowners receive income from carbon projects on their land.

Meanwhile, verification bodies, legal advisors, and financial services firms provide essential market infrastructure. Trading platforms connect buyers with credit suppliers. This ecosystem now employs over 11,000 people across the UK.

For businesses, carbon credits serve multiple purposes. Some organizations purchase credits to meet voluntary sustainability commitments. Others use them to address residual emissions that cannot yet be eliminated through operational changes. Public sector suppliers increasingly reference carbon credentials in tender responses, particularly where social value scoring applies.

The investment figures indicate growing confidence in the regulatory framework surrounding carbon credits. Nevertheless, the wide range in future market projections reveals continuing uncertainty about policy direction. Businesses entering this market need clarity about verification standards, permanence guarantees, and how credits align with science-based targets.

Investment flows into land and nature projects

The $3.5 billion investment figure predominantly reflects capital directed toward nature-based solutions. Woodland creation projects represent a significant portion of this activity. Trees sequester carbon as they grow, generating credits over decades. However, these projects require long-term land commitments and carry risks related to disease, fire, and climate change impacts.

Peatland restoration attracts substantial investment because degraded peatlands emit significant carbon. Restoring these landscapes stops emissions and begins rebuilding carbon stocks. The process involves blocking drainage channels and re-establishing vegetation. Projects typically span large acreages and require specialized ecological knowledge.

Agricultural carbon projects focus on soil carbon sequestration through changed farming practices. Methods include reducing tillage, planting cover crops, and adjusting fertilizer use. These projects appeal to investors because they can be implemented across existing farmland without removing land from food production. However, measuring and verifying soil carbon changes remains technically challenging.

For rural businesses and landowners, carbon projects offer a potential income stream. The economics depend on project type, site characteristics, and credit prices. Landowners should assess opportunity costs carefully, considering alternative land uses and the duration of carbon project commitments. Most projects involve contracts spanning 30 to 100 years.

Policy framework remains incomplete

Industry bodies behind the research emphasize that market growth depends on clearer government policy. Currently, no comprehensive UK strategy coordinates carbon credit market development. Questions persist about how voluntary carbon markets interact with compliance schemes like the UK Emissions Trading Scheme.

The regulatory landscape includes several overlapping elements. The UK ETS covers large industrial emitters and power generators. These organizations must surrender allowances matching their emissions. Separately, voluntary carbon markets allow businesses outside compliance schemes to purchase credits. The two systems operate independently, creating potential confusion about which reductions count where.

Standards bodies including the International Carbon Reduction and Offset Alliance provide verification frameworks. However, multiple competing standards exist globally. Businesses purchasing credits face decisions about which standards meet their requirements. Some corporate buyers now demand credits verified against multiple standards to ensure credibility.

The government has indicated interest in developing clearer market infrastructure. Discussions continue about establishing a UK carbon credit registry and potentially introducing quality standards for credits sold domestically. These developments would likely increase market confidence but could also introduce new compliance requirements for project developers.

What this means for UK businesses

• The UK carbon credit market has reached commercial scale, generating £1.2 billion annually and employing over 11,000 people across project development, verification, and trading functions.
• Investment of $3.5 billion between 2023 and 2025 demonstrates growing capital flows into carbon projects, particularly nature-based solutions involving land use change.
• Global market projections range from $15.8 billion to $267.9 billion by 2050, indicating potential for substantial expansion but also reflecting uncertainty about policy and demand.
• Rural businesses and landowners can access carbon project income, though commitments typically span 30 to 100 years and require careful assessment of opportunity costs.
• Businesses purchasing carbon credits face decisions about verification standards, project types, and how credits align with science-based reduction targets and public procurement requirements.
• Policy development continues, with potential future changes to registration, quality standards, and the relationship between voluntary and compliance carbon markets.

Questions about offset credibility persist

The economic figures in this report arrive amid ongoing debates about carbon credit quality and effectiveness. Not all credits deliver equivalent climate benefits. Some projects might have happened anyway without carbon finance, raising questions about additionality. Others face risks that carbon storage could reverse through fire, disease, or land use changes.

These concerns matter for businesses building reduction strategies. Organizations making net zero commitments typically prioritize direct emissions cuts within their own operations. Carbon credits, if used, generally apply only to residual emissions that cannot be eliminated. This hierarchy reflects guidance from the Science Based Targets initiative and other standard-setting bodies.

For procurement purposes, understanding credit quality becomes particularly important. Public sector buyers increasingly scrutinize carbon claims in tender responses. Businesses referencing carbon credits in social value submissions should be prepared to demonstrate the verification methodology, permanence arrangements, and how credits fit within a broader reduction strategy. Vague claims without supporting detail risk challenge during evaluation.

The market continues evolving toward higher quality standards. Several high-profile controversies involving questionable credits have driven demand for more rigorous verification. Businesses entering this market should expect standards to tighten further. Credits purchased today under current verification rules may face retrospective scrutiny as methodologies improve.

Future growth depends on policy clarity

The wide range in future market projections reflects fundamental uncertainty about government policy direction. The lower projection of $15.8 billion assumes limited policy support and modest voluntary demand. The upper projection of $267.9 billion requires strong policy drivers and widespread corporate adoption of carbon credit strategies.

Several policy factors will shape market development. First, the government could mandate carbon credit use in specific sectors or applications. Second, tighter regulations on voluntary carbon claims could either boost confidence and demand or restrict market activity depending on implementation. Third, the relationship between voluntary markets and the UK ETS requires clarification.

International coordination also matters. Carbon credits can cross borders, creating competition between national markets. UK projects compete for investment against opportunities in other countries. Businesses purchasing credits can often choose between domestic and international options. This international dimension complicates efforts to develop purely national policy frameworks.

For businesses planning beyond the next few years, the policy uncertainty creates risk. Investments in carbon projects involve long timeframes. Companies purchasing credits as part of net zero strategies need confidence that credits will retain credibility and acceptance. The government’s approach to these questions will significantly influence whether the sector reaches the higher end of growth projections.

How carbon markets connect to wider climate policy

The carbon credit market exists within a broader climate finance landscape. The UK government raises revenue through carbon pricing mechanisms including the UK ETS and fuel duties. Research indicates that only about 20% of emissions trading scheme revenue currently gets reinvested into climate action. Approximately one billion pounds less gets spent on cutting domestic emissions than the government raises through carbon taxes.

This revenue allocation pattern raises questions about policy priorities. Carbon markets can channel private investment into climate solutions, potentially reducing demands on public funds. However, private investment flows to projects offering commercial returns, which may not align perfectly with national emissions reduction needs. Some essential climate actions offer weak commercial returns and require direct public funding.

For businesses, these wider policy dynamics create both opportunities and risks. Strong growth in voluntary carbon markets could reduce pressure for additional regulatory requirements or carbon taxes. Alternatively, if voluntary markets fail to deliver expected emissions reductions, governments may introduce stricter compliance obligations. Businesses should monitor policy signals alongside market developments.

The relationship between public and private climate finance will likely remain contested. Carbon credits represent one tool among many for achieving emissions reductions. Their role in national climate strategy depends on whether they genuinely deliver additional reductions beyond what would occur through regulation and direct public investment.

Supporting evidence and further information

The research discussed in this article was published jointly by the City of London Corporation and the UK Carbon Markets Forum. These organizations represent financial services and carbon market participants respectively. Businesses seeking detailed market data should consult the full report through these organizations’ websites.

For guidance on carbon reduction strategies, the Science Based Targets initiative provides frameworks for setting credible reduction targets. Their guidance addresses how carbon credits can fit within corporate climate strategies. Additionally, our net-zero program helps businesses navigate carbon reporting requirements and reduction planning.

The UK government publishes information about the UK Emissions Trading Scheme through the Department for Energy Security and Net Zero. This includes market data, regulatory updates, and guidance for covered installations. The Environment Agency oversees compliance for installations in England.

Questions about carbon project verification can be directed to standards bodies including the International Carbon Reduction and Offset Alliance. These organizations maintain publicly accessible standards documentation and registries of verified projects. For businesses considering sustainable procurement requirements, guidance on evaluating carbon claims in supply chains continues developing as market practice evolves.