UK Modern Slavery Act 2015

Commercial organizations carrying on business in the UK with total turnover of £36 million or more must publish an annual statement on the steps taken to ensure slavery and trafficking are not occurring in their business or supply chains, approved by the board, signed by a director and linked from the website homepage. Statements can be added to a government registry. Enforcement is currently by injunction only; a bill introduced in June 2026 would make content mandatory and add civil penalties.

The act makes labor practices in warehouses and transport part of large retailers' supplier vetting, so 3PLs and staffing agencies face audits. A UK fulfillment provider serving a large retailer will typically be asked about recruitment fees, agency checks and right-to-work controls, and must publish its own statement if it meets the threshold. Logistics is a recognized risk sector because of agency labor, so evidence of audits and worker grievance channels helps win and keep contracts.

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1. Modern Slavery Act 2015, section 54 (legislation.gov.uk) legislation.gov.uk
2. Clifford Chance: Proposed reforms to strengthen corporate reporting under UK Modern Slavery Act (2026) cliffordchance.com