The intersection of ESG (Environmental, Social and Governance) obligations and trade compliance is one of the most significant developments in international trade law and practice over the past three years. What was previously a voluntary reporting framework for large corporations is rapidly becoming a mandatory compliance obligation with direct trade implications — and the pace of regulatory change shows no sign of slowing. This guide examines the key regulatory developments at the ESG–trade compliance interface and what businesses need to start tracking. CBAM: Carbon Price at the Border The EU's Carbon Border Adjustment Mechanism (CBAM) is the most commercially significant ESG-related trade compliance obligation for UK exporters to the EU. By placing a carbon price on imports of steel, aluminium, cement, fertilisers, electricity and hydrogen into the EU, CBAM directly links environmental performance — specifically carbon intensity of production — to the cost of market access. CBAM entered its transitional phase in October 2023 and becomes financially binding from January 2026. For UK manufacturers in covered sectors, CBAM requires: - Calculation and documentation of embedded carbon emissions at product level - Provision of verified carbon data to EU customers - Third-party verification of carbon data from 2026 The UK is developing its own equivalent CBAM, with implementation expected from 2027. EU Deforestation Regulation (EUDR) The EU Deforestation Regulation (EUDR), which enters into force in 2025, prohibits the placement on the EU market of cattle, cocoa, coffee, palm oil, soya, wood, rubber and derived products if they are linked to deforestation or forest degradation. UK exporters supplying these commodities or products derived from them to EU customers must conduct geolocation-level due diligence on their supply chain and provide evidence that sourcing meets the EUDR criteria. For UK businesses in food, beverage, packaging, furniture and other affected sectors, the EUDR requires significant supply chain mapping and supplier engagement work. EU Corporate Sustainability Due Diligence Directive (CSDDD) The CSDDD (also known as CS3D) requires large EU companies — and non-EU companies with significant EU turnover — to conduct human rights and environmental due diligence across their full value chain. While the directive primarily targets large companies, its supply chain effects will cascade to smaller UK exporters that supply EU companies subject to the obligation. UK suppliers to EU companies covered by CSDDD should expect increased due diligence requests and information requirements from their EU customers. Germany's Supply Chain Act (LkSG) Germany's Lieferkettensorgfaltspflichtengesetz (LkSG) is already in force and requires German companies above certain turnover thresholds to conduct risk management, prevention and remedy processes across their supply chains for human rights and environmental violations. UK exporters to Germany should ensure their supplier questionnaire and audit responses are up to date. Modern Slavery and UK Export Policy UK export controls increasingly intersect with modern slavery considerations. The UK Border Force and HMRC have powers to refuse clearance for goods suspected of being manufactured using forced labour. UK companies importing goods from jurisdictions with documented forced labour concerns face both compliance and reputational risk. Managing the ESG–Trade Compliance Interface For businesses navigating this evolving landscape, the practical challenges are significant: - Data collection: Carbon, deforestation and labour standard data must be collected from supply chains that may span multiple countries and tiers. - Verification: Several regulatory regimes require third-party verification of data — adding cost and lead time. - Documentation management: Evidence of compliance must be documented, retained and available for regulatory audit. - Customer requirements: EU buyers subject to CSDDD and EUDR will pass compliance requirements down the supply chain. Conclusion Trade compliance is no longer solely a customs and tariff discipline. The ESG regulatory agenda has made supply chain ethics, environmental footprint and human rights standards direct determinants of market access. Businesses that treat ESG compliance as separate from trade compliance are missing the integration that is now embedded in EU and UK regulatory frameworks. An integrated approach — combining customs expertise with sustainability and supply chain due diligence capability — is rapidly becoming the baseline for competitive international trade.