Join the HubSign in

Fulfilling a Major Customer’s Sustainability Requirements

Fulfilling a Major Customer’s Sustainability Requirements

A hospitality provider found itself at risk of losing preferred supplier status with a major client. The reason was not service quality or pricing. The customer required detailed greenhouse gas emissions data and a formal reduction plan as a condition of the ongoing commercial relationship.

The company had never measured its carbon footprint. It had no baseline emissions figure, no tracking system for energy use across properties, and no documented plan to reduce its environmental impact. Consequently, it could not meet the supplier code of conduct set by one of its most important customers.

This case, documented by BDO, illustrates how sustainability reporting has shifted from voluntary disclosure to commercial necessity. For many UK businesses, carbon data is now a qualification requirement for contracts, particularly in public sector procurement and large corporate supply chains.

The hospitality firm managed hotels and provided extended lodging solutions. When its customer began requesting annual climate information in 2022, the company faced a choice: build the reporting capability or risk the contract. It chose the former, working with advisers to create its first emissions inventory and develop a reduction strategy aligned with customer expectations.

What the customer required from its supplier

The customer's supplier code set out specific data requirements. These were not suggestions. The hospitality company needed to provide several categories of information annually to maintain its preferred status.

Scope 1 emissions covered sources the company owned or controlled directly, such as fuel burned in boilers or company vehicles. Scope 2 emissions included purchased electricity and heat consumed across its properties. The customer also requested selected Scope 3 data, initially covering purchased goods and services, business travel, and employee commuting.

Additionally, the company had to report total emissions across all properties and provide service-level data linked specifically to the housing solutions delivered to that customer. Both current-year and baseline-year figures were required, along with a formal decarbonization strategy explaining how emissions would fall over time.

Failure to comply could have triggered a breach of the supplier code. That would have jeopardized the company's preferred supplier position and the associated revenue stream. The commercial stakes were clear and immediate.

This pattern is becoming widespread. Procurement teams increasingly ask for net zero commitments, emissions intensity metrics, and supply chain carbon data during tender evaluation and contract renewals. The shift is not driven solely by regulation or investor pressure. Customers themselves are embedding sustainability criteria into supplier selection and performance reviews.

Creating an emissions inventory from scratch

BDO began supporting the company in 2022 to calculate its first greenhouse gas inventory. The initial task involved defining the organizational boundary: which properties, assets, and activities fell under the company's operational control and therefore needed to be included under Greenhouse Gas Protocol principles.

For hospitality businesses, this exercise can be complex. Emissions may arise from owned hotels, leased facilities, managed properties, outsourced services, employee travel, and procurement of goods ranging from food to furnishings. Without a consistent boundary and methodology, year-on-year comparisons become unreliable and customer-specific reporting breaks down.

The company also needed to distinguish between two reporting perspectives. Corporate emissions reflected the overall carbon footprint of its operations and properties. Service-level emissions, meanwhile, captured only the footprint attributable to the lodging and housing services delivered to the major customer.

This distinction allowed the customer to assess not just the supplier's overall climate performance but also the carbon intensity of the specific services it purchased. For the hospitality provider, it meant disaggregating emissions data by client and service line, which required more granular tracking than a simple company-wide total.

Expanding Scope 3 reporting as customer demands evolved

In 2025, the customer broadened its data request. It increased the number of Scope 3 categories the hospitality company had to address. This expansion illustrated a key challenge: compliance is not a one-time exercise but an evolving requirement.

Scope 3 emissions are typically the hardest to quantify. They arise throughout a value chain rather than from facilities or equipment the reporting organization controls directly. For the hospitality sector, Scope 3 can include purchased food, cleaning supplies, third-party services, waste treatment, logistics, capital goods, construction activity, and energy-related emissions outside direct fuel and electricity use.

As customer expectations changed, the company needed a repeatable process capable of incorporating new categories, improving data quality, and responding to revised reporting templates. A static spreadsheet or ad hoc calculation would not suffice. The company required documented procedures, clear data ownership, and a governance structure to manage annual updates.

This reflects a broader challenge for UK SMEs. Many businesses can produce a first carbon footprint relatively quickly, often using consultancy support or software tools. However, maintaining that reporting over time, expanding scope, and responding to evolving customer or regulatory requirements demands internal capability and resource commitment.

How the hospitality company met the requirement

BDO's support covered the full reporting cycle, from data collection through to strategy development. The firm helped the company identify assets within its operational boundary, gather activity data from properties and business functions, and calculate Scope 1, Scope 2, and the requested Scope 3 emissions.

It also produced customer-specific service-level information, developed an initial decarbonization plan, and updated that plan annually in response to customer requests. As part of the compliance process, BDO provided a third-party letter describing the methodology and results.

This letter was significant. It gave the customer documented assurance about how the emissions figures had been calculated and what the results represented. While the case study does not state that the entire inventory received independent assurance to a formal standard such as ISO 14064-3, the annual letter strengthened the credibility of the disclosures required under the supplier code.

The process also required the company to develop reduction initiatives aligned with both customer expectations and its own business operations. This meant identifying practical interventions across energy procurement, property management, travel policies, purchasing decisions, and supplier engagement.

For many businesses, this dual alignment is challenging. A decarbonization plan must satisfy external stakeholders while remaining operationally and financially viable. It must balance ambition with realism, particularly for SMEs with limited capital budgets and competing investment priorities.

Contract protection and preferred supplier status retained

The company achieved several outcomes. It calculated its first greenhouse gas inventory, created a formal decarbonization strategy, and expanded its Scope 3 reporting as customer requirements evolved. Critically, it maintained annual compliance with the supplier code of conduct.

As a result, it preserved its preferred supplier position and kept the key contract. BDO's broader sustainability guidance identifies the same commercial pattern: stronger emissions reporting can help protect revenue and support a company's position in competitive procurement processes.

This outcome highlights a shift in how sustainability performance affects commercial risk. The company was not responding to a voluntary climate initiative or a marketing opportunity. It was responding to a contractual requirement with direct consequences for revenue and market access.

For businesses operating in public sector supply chains, this dynamic is particularly pronounced. Procurement Policy Note 06/21 requires suppliers bidding for central government contracts above £5 million per year to publish a Carbon Reduction Plan and commit to net zero by 2050. Similar requirements are spreading across local government, housing associations, universities, and NHS trusts.

In the private sector, large corporate buyers are increasingly embedding carbon criteria into supplier scorecards, tender evaluations, and contract renewal processes. For SMEs serving these customers, sustainability reporting is no longer optional. It is a market access requirement, similar to quality certification or financial stability checks.

Emissions data as a procurement qualification

The case illustrates three broader implications for UK businesses. First, emissions data is becoming a procurement qualification in its own right. A supplier may lose strategic status not because of product quality or service delivery failures, but because it cannot provide credible climate information or a reduction plan.

BDO specifically notes that customer contracts increasingly demand detailed greenhouse gas data. This trend is visible across sectors. Retailers ask suppliers for product carbon footprints. Construction clients require embodied carbon calculations for materials. Technology buyers request data centre energy efficiency metrics. Transport customers want emissions intensity figures per tonne-kilometre or passenger-kilometre.

For businesses without existing reporting systems, this creates a capability gap. Building an emissions inventory requires data infrastructure, calculation tools, staff training, and often external expertise. The investment is not trivial, particularly for smaller businesses with limited sustainability resources.

However, the cost of not investing can be higher. Lost contracts, exclusion from tenders, and reduced competitiveness in supply chains represent direct commercial consequences. For many SMEs, the business case for carbon reporting is not about reputation or values. It is about market access and revenue protection.

Climate reporting must be operationally repeatable

Second, climate reporting must be operationally repeatable. The hospitality company's experience shows that a first inventory is only the starting point. Annual requests, expanded Scope 3 categories, revised customer templates, and service-level reporting require ongoing governance and data ownership.

Many businesses treat their first carbon footprint as a project: they engage a consultant, gather data, produce a report, and move on. This approach works for a one-off disclosure but fails when reporting becomes an annual requirement or when customers request more granular or frequent data.

Repeatable reporting requires documented procedures, clear responsibility for data collection, and systems to track activity across sites, departments, and supply chains. It also requires version control for methodology, transparency about data quality, and audit trails for verification purposes.

For SMEs, this can mean designating a sustainability lead, investing in software tools, training finance or operations staff in emissions calculation, and integrating carbon data into existing management information systems. The effort is significant but necessary if reporting is to become a business-as-usual activity rather than an annual scramble.

Our net zero program for carbon reporting compliance supports businesses in building these repeatable processes, particularly those responding to Procurement Policy Note 06/21 or similar customer requirements.

Decarbonization planning tied to business continuity

Third, decarbonization planning is increasingly tied to business continuity. A plan that connects emissions reductions with operational decisions—such as energy procurement, property management, travel, purchasing, and supplier engagement—can serve both environmental and commercial purposes.

It helps answer not only how much a company emits, but also how it intends to reduce emissions while continuing to meet customer needs. This dual function is critical. Customers and procurers are not interested in aspirational statements. They want evidence of tangible actions, measurable progress, and credible targets.

A credible plan typically includes a baseline emissions inventory, a target year and reduction percentage, near-term milestones, specific initiatives with expected carbon savings, and governance arrangements for tracking progress. It should also address both quick wins and longer-term structural changes.

For example, a hospitality business might start with energy efficiency improvements, LED lighting upgrades, and procurement of renewable electricity. Over time, it might invest in building fabric improvements, low-carbon heating systems, electric vehicle fleets, and supply chain engagement to reduce Scope 3 emissions.

Each initiative should be costed, prioritized, and linked to the overall reduction trajectory. This approach allows businesses to demonstrate progress annually, respond to customer queries with specific evidence, and adjust the plan as circumstances change.

Summary of key facts

What UK businesses should consider now

For businesses serving large corporate customers or public sector clients, the message is clear. Carbon reporting capability is no longer optional. It is a commercial requirement that affects contract eligibility, supplier performance reviews, and competitive positioning.

Businesses without existing reporting systems should consider several steps. First, assess current and likely future customer requirements. Are clients requesting emissions data as part of tender submissions or supplier questionnaires? Are sustainability criteria appearing in scorecards or contract terms? Understanding the specific requirements helps prioritize effort and investment.

Second, establish an organizational boundary and methodology aligned with the Greenhouse Gas Protocol. This provides consistency, comparability, and credibility. It also makes it easier to respond to multiple customer requests using a single underlying data set.

Third, calculate a baseline emissions inventory covering Scope 1 and Scope 2 as a minimum. Many customer requests also include selected Scope 3 categories, so identifying which categories are material and feasible to measure is important early on.

Fourth, document the process. Record data sources, calculation methods, assumptions, and exclusions. This documentation is essential for annual updates, third-party review, and responding to customer queries about methodology.

Fifth, develop a credible reduction plan. This should include a target year, reduction percentage, near-term milestones, and specific initiatives. The plan should be realistic given available resources and aligned with both customer expectations and business operations.

Finally, consider whether internal capability or external support is more appropriate. Some businesses build in-house expertise through training and software tools. Others use consultancy support for initial setup and transition to internal management over time. The right approach depends on business size, resource availability, and the complexity of the emissions profile.

Our compliance support for carbon reporting helps SMEs navigate these requirements, particularly those responding to public sector procurement criteria or large corporate supplier codes.

Limits of the publicly available information

BDO's public case study does not identify the hospitality company, the major customer, the contract's financial value, or the company's total emissions. It also does not publicly detail the specific decarbonization initiatives implemented or disclose whether the full inventory received independent assurance to a formal standard.

These omissions mean the case should be understood primarily as an example of sustainability reporting readiness and contract protection, rather than as evidence of quantified emissions reduction achievements. The company may well have reduced emissions, but the case study does not provide that data.

Even so, the commercial result is clear. By establishing a defensible emissions reporting process and a customer-aligned reduction strategy, the company met an evolving supplier requirement and protected an important business relationship. The episode offers a practical lesson: climate data capability is increasingly part of maintaining market access, not merely communicating corporate values.

For UK SMEs, this lesson is particularly relevant. Many businesses assume sustainability reporting is relevant only to large listed companies or those with specific regulatory obligations. However, the reality is different. Supply chain requirements, customer codes of conduct, and procurement criteria are pushing reporting down to smaller suppliers across all sectors.

Businesses that develop this capability early gain a competitive advantage. They can respond to tender requirements more quickly, demonstrate credibility in supplier reviews, and position themselves as preferred partners for customers with ambitious climate commitments. Those that delay face growing risk of contract loss, tender exclusion, and reduced market access.

Where to find authoritative guidance

The UK government provides detailed guidance on carbon reporting and net zero commitments for businesses. The Procurement Policy Note 06/21 sets out requirements for suppliers to central government contracts and includes a template for Carbon Reduction Plans.

The UK Net Zero Strategy outlines the government's approach to decarbonization across the economy, including expectations for business contribution. The Greenhouse Gas Protocol provides the international standard for emissions accounting and reporting, including detailed guidance on Scope 1, 2, and 3 calculations.

For sector-specific guidance, industry bodies such as the Institute of Environmental Management and Assessment and the Chartered Institute of Procurement and Supply offer resources on sustainability reporting and supply chain carbon management. These resources can help businesses understand methodology, data requirements, and reporting standards relevant to their sector and customer base.

Tagged with:Reporting