May 28
The UK now has its own Sustainability Reporting Standards, and while most SMEs are not directly required to report under them yet, the pressure is already reaching smaller businesses through customers, lenders and supply chains.
The Department for Business and Trade published the final UK Sustainability Reporting Standards, UK SRS S1 and UK SRS S2, on 25 February 2026. They are available for voluntary use and are based on the international standards developed by the International Sustainability Standards Board.
For a typical SME, this does not mean you suddenly need to publish a full sustainability report. But it does mean your larger customers, lenders and investors are starting to ask better questions about emissions, energy use, waste, governance and sustainability-related risk.
If you sell to larger companies, work on public or corporate contracts, or borrow from banks, the request for ESG data may arrive before any direct legal duty applies to your own business. The businesses that prepare early will be in a stronger position to win contracts, answer customer questionnaires, support finance applications and avoid rushed, inconsistent reporting later.
The UK SRS are the UK-endorsed versions of the global IFRS Sustainability Disclosure Standards.
UK SRS S1 sets out the general requirements for disclosing sustainability-related financial information. It covers governance, strategy, risk management, and metrics and targets. It is not only about climate. It applies to sustainability-related risks and opportunities that could reasonably affect a business’s cash flows, access to finance or cost of capital.
UK SRS S2 focuses specifically on climate-related disclosures. This includes climate risks and opportunities, greenhouse gas emissions, scenario analysis and the resilience of the business under different climate-related conditions.
The standards are closely aligned with the ISSB framework, with UK-specific amendments. The aim is to make sustainability reporting more comparable, consistent and useful for investors, lenders and other decision-makers.
The UK SRS do not immediately replace every existing reporting obligation. Current rules such as Streamlined Energy and Carbon Reporting, existing climate-related financial disclosure requirements and sector-specific expectations still need to be considered where they apply. However, the UK SRS are now the main foundation for the UK’s future sustainability disclosure regime.
For the wider picture of how reporting and governance fit together for a growing business, our piece on why internal audit supports business growth is a useful companion.
The UK SRS are currently voluntary, and the first proposed mandatory route is aimed mainly at listed companies through FCA rules. The FCA has consulted on aligning listed company sustainability disclosures with UK SRS, with rules expected to come into force for accounting periods beginning on or after 1 January 2027, subject to final policy.
The position for large private companies is still being developed. Further consultation and legislation would be needed before any wider mandatory regime applies. That means SMEs are not the main direct target.
The pressure reaches SMEs through the supply chain.
A large customer that needs to report its climate impact must understand emissions across its value chain. Scope 3 emissions are indirect emissions from suppliers, customers, business travel, transport, waste and the use of products. For many businesses, Scope 3 is the largest part of the overall carbon footprint.
If you supply goods or services to a larger company, your emissions may form part of that customer’s Scope 3 reporting. That customer may therefore ask you for data on your energy use, fuel, company vehicles, materials, packaging, waste or basic sustainability policies.
The same applies to finance. Banks and investors increasingly need better data on the businesses they lend to or invest in. Even where you are not reporting under UK SRS, your lender may ask for sustainability information as part of climate risk assessment, refinancing, sustainability-linked finance or due diligence.
This is why waiting until you are formally required to report is the wrong strategy. The request is more likely to come from a customer or lender first. Our piece on how management accounts help SME owners covers the wider discipline of having the right data ready before a stakeholder asks for it.
Most SMEs will not be asked to produce a full UK SRS report. More often, you will be asked for practical inputs that help a larger customer complete its own reporting.
The most common requests include direct emissions from owned or controlled sources, such as company vehicles, on-site fuel use and gas heating. These are Scope 1 emissions. You may also be asked for emissions from purchased electricity, known as Scope 2.
Energy usage is usually one of the easiest starting points because it can be taken from electricity and gas bills. Fuel records, mileage records and vehicle data are also important where staff travel, deliveries or company vehicles are material.
Customers may also ask about waste, water use, packaging, recycling, health and safety, environmental policies, modern slavery statements, governance arrangements and whether you have set any sustainability targets.
The key point is that much of this information already exists somewhere in your business. It may be in energy bills, fuel cards, waste contractor invoices, water bills, fleet records, HR files, insurance documents or health and safety records. The problem is often not that the data is impossible to collect. It is that nobody has been collecting it consistently.
The most useful starting point is your Scope 1 and Scope 2 emissions, calculated using a recognised method such as the GHG Protocol. These are easier to measure than full Scope 3 emissions and are often what customers ask for first. Our piece on switching to cloud accounting for SMEs explains why good systems make this kind of data collection easier.
Sustainability data is increasingly linked to finance. Lenders need to understand climate risk, sector exposure, energy efficiency, regulatory pressure and borrower resilience. For larger banks, sustainability data also feeds into their own reporting on financed emissions.
This creates both a risk and an opportunity for SMEs.
The risk is that poor data can slow down finance conversations. A lender may not be able to rely on rough estimates, incomplete spreadsheets or figures prepared with unclear boundaries. If the data does not stand up, it may not support better lending terms.
The opportunity is that a business with clean, consistent data can look more organised and lower risk. It can answer lender questions quickly, support sustainability-linked finance discussions and strengthen its position in refinancing, investment or sale processes.
UK SRS S1 frames sustainability information in financial terms: risks and opportunities that can affect cash flows, access to finance and cost of capital. That is the right way for SMEs to think about it. ESG data is not just a marketing exercise. It can affect commercial decisions.
Our corporate finance team works with businesses where access to finance is a live commercial question, and our pieces on how to prepare your business for sale and due diligence and its importance in business explain why better information matters when buyers, investors or lenders start asking detailed questions.
Scope 1 emissions are direct emissions from sources your business owns or controls. This includes company vehicles, on-site fuel use and gas heating.
Scope 2 emissions are indirect emissions from purchased energy, mainly electricity.
Scope 3 emissions are the wider value chain emissions. They include emissions from suppliers, purchased goods, business travel, employee commuting, waste, transport, product use and product end-of-life.
Most SMEs should not try to calculate everything at once. Start with Scope 1 and Scope 2 using primary data from your own records. Then identify the most material Scope 3 areas for your business.
A contractor might focus on materials, transport and waste. A professional services firm might focus on travel, office energy and purchased services. A manufacturer might need to look at raw materials, packaging, distribution and product use.
The best approach is phased and consistent. Track the right things properly rather than trying to track everything badly. Our piece on the key financial KPIs every SME owner should be monitoring monthly covers the same principle in financial reporting.
You do not need to start with a full sustainability report. You need a practical data foundation.
Start by gathering a full year of electricity, gas, fuel and mileage records. These provide the raw material for Scope 1 and Scope 2 calculations.
Then calculate your emissions using a recognised GHG Protocol-aligned method or a reputable calculation tool. Keep a clear record of the methodology, conversion factors and reporting period used.
Next, document the policies you already have. Health and safety, environmental, data protection, modern slavery and basic governance policies may already exist, even if they are not currently described as ESG documents.
Assign responsibility to someone in the business. This may sit with finance, operations, compliance or senior management, but it needs an owner.
Set a baseline year. Without a starting point, you cannot show progress.
Capture the data regularly. Monthly or quarterly collection is far easier than reconstructing everything at year-end.
Identify which customers or lenders are most likely to ask for this information, and check whether they already publish supplier requirements.
The businesses that do this calmly over a few months are in a very different position from those that receive a customer questionnaire with a 2-week deadline and have nothing ready. Our pieces on how tax accountants help small businesses and the future of financial planning cover the broader theme of planning before pressure arrives.
If you operate across the UK to Ireland border, or sell into the EU, there is an additional layer to consider. The EU’s Corporate Sustainability Reporting Directive operates alongside the UK regime, but the two frameworks are not identical.
Recent EU changes have narrowed the reach of mandatory sustainability reporting and introduced limits on how much sustainability information larger companies can demand from smaller value-chain businesses. However, larger customers may still ask suppliers for data needed for their own reporting, provided the request is within the relevant limits.
For a cross-border SME, the practical point is simple: you may face requests framed around either the UK or EU regime depending on your customers. The underlying data, particularly your Scope 1 and Scope 2 emissions, is useful under both.
Collect it once, collect it well, and you are better placed to respond to both frameworks. This is exactly the kind of dual-framework issue our Cross-border tax advisory and wider cross-border advisory work addresses. Our pieces on VAT compliance for businesses operating across the UK to Ireland border and setting up a company in both the UK and Ireland cover related considerations for businesses operating on both sides.
As ESG data becomes commercially valuable, the temptation to overstate green credentials grows. So does scrutiny.
Lenders, customers, regulators and investors are alert to greenwashing risk. If a business makes inflated claims about sustainability, carbon reduction or climate performance, those claims can create legal, financial and reputational problems.
The safest approach is accurate measurement, consistent boundaries, recognised methodology and honest reporting. A modest position reported properly is safer than an inflated position that cannot be evidenced.
Where claims, data or reported figures come under challenge, the standard of evidence can be high. Our forensic accountants UK team has the experience to examine and substantiate financial and data claims. Our pieces on what a forensic accountant does and when you need one, forensic accounting vs audit and red flags of financial fraud in SMEs explain where this kind of scrutiny applies.
For the assurance side, what to expect during an external audit and how a quality external audit strengthens trust with lenders and investors are directly relevant, because sustainability data is increasingly being reviewed alongside financial information.
ESG data does not sit in isolation. It connects to your cost base, tax position and operational decisions.
Energy efficiency investments that reduce your Scope 1 and Scope 2 emissions may also reduce running costs and may qualify for capital allowances. Our business owner’s guide to capital allowances explains the reliefs available.
Innovation in low-carbon products, materials or processes may qualify for R&D tax relief. Our pieces on what qualifies for R&D tax credits in the UK and Ireland, the companion R&D piece and common mistakes businesses make claiming R&D tax relief cover the detail.
Land remediation relief may be relevant where you clean up contaminated sites, which can overlap with sustainability objectives. Our piece on land remediation relief explained covers who qualifies.
This is why ESG data collection is best treated as part of a broader move towards better business information, not as a standalone compliance chore. Our SME business solutions team works with owner-managers on this kind of joined-up improvement, and our digital bookkeeping team handles the underlying data infrastructure.
Sustainability reporting is only one part of a wider shift towards more digital, data-led business reporting.
Making Tax Digital for Income Tax began from April 2026 for sole traders and landlords with qualifying income above £50,000, based on the relevant tax return data. Our pieces on Making Tax Digital explained and Making Tax Digital and what UK and Irish businesses need to know cover the practical detail.
For payroll and employment-related changes, HMRC PAYE issues and salary sacrifice pension changes are also worth reviewing.
For owner-managed and family businesses thinking about governance and succession alongside sustainability, our piece on protecting the family business with a family charter is useful. If you are approaching a transaction, the indispensable role of chartered accountants in mergers and acquisitions explains why credible information matters.
For directors filing personally, our self-assessment tax returns guide is the relevant starting point. For cross-border owners, common tax mistakes expats and cross-border businesses make and cross-border payroll cover related ground. For broader strategic context, tax planning for UK businesses expanding overseas is useful, and where cash flow pressure is part of the picture, how recovery accountants help improve cash flow is the right read.
Not directly in most cases. The UK SRS are currently available for voluntary use, and proposed mandatory reporting is expected to focus on listed companies first. However, SMEs may still be asked for sustainability data by large customers, banks or investors.
UK SRS S1 covers general sustainability-related financial disclosures, including governance, strategy, risk management, metrics and targets. UK SRS S2 focuses specifically on climate-related disclosures.
Start with energy use, fuel, company vehicle data, electricity, gas, waste, water, health and safety metrics, and basic governance policies. Scope 1 and Scope 2 emissions are the best starting point.
Scope 1 is direct emissions from sources your business owns or controls. Scope 2 is emissions from purchased energy. Scope 3 is wider value-chain emissions, including suppliers, travel, waste, transport and product use.
Banks need better sustainability data to manage climate risk, assess borrower resilience and meet their own reporting expectations. Clean data can support finance conversations and reduce friction in lending or refinancing.
Yes, if you sell into the EU or supply larger EU-linked businesses. The UK and EU regimes are different, but the underlying data, especially Scope 1 and Scope 2 emissions, is useful across both.
Overstating sustainability claims can create greenwashing risk. The safer approach is accurate measurement, clear boundaries and honest reporting that can be evidenced.
If your business sells to larger companies or borrows from banks, the request for sustainability data is coming. The businesses that prepare now will be better placed to keep contracts, support finance applications and respond confidently when customers or lenders ask for evidence.
As the chartered accountants Northern Ireland, wider UK and Ireland businesses rely on, SCC Chartered Accountants can help you build the data infrastructure, connect it to available tax reliefs and make sure your reporting stands up to scrutiny.
Our SME business solutions and digital bookkeeping teams handle the practical side, our specialist tax team connects it to reliefs, and our external audit team covers the assurance angle.
Get in touch with the SCC team to start building your sustainability data foundation before a customer or lender asks for it.
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