The UK Modern Slavery Act has been on the statute books for over a decade. Most organisations with a turnover above £36 million know they are required to publish an annual statement under Section 54. A significant proportion do so, and a significant proportion of those statements say very little of substance. A paragraph on supplier questionnaires. A commitment to review policies annually. A signature from the CEO.
That is compliance in its narrowest possible form, and it is increasingly insufficient... not just morally, but practically. Supply chains are under greater regulatory scrutiny than at any point since 2015, and the organisations found wanting are no longer only the large multinationals. Smaller businesses, tier-two and tier-three suppliers, and public sector contractors are being pulled into scope by the requirements of their clients even when the law does not yet directly require it of them.
This piece is not a guide to writing a better modern slavery statement... It is about why training is the part most organisations underinvest in, and what effective awareness looks like when it is built around the people who actually need to use it.
Section 54 of the Modern Slavery Act 2015 requires commercial organisations with an annual turnover of £36 million or more to produce a slavery and human trafficking statement for each financial year. The statement must be approved by the board, signed by a director, and published on the organisation's website.
The Act specifies six areas the statement may cover: the organisation's structure and supply chains; its policies in relation to slavery and human trafficking; due diligence processes; risk assessment; the key performance indicators it uses to assess effectiveness; and training available to staff.
That final item... training, is listed last, and it tends to be treated accordingly. It is common to see statements that describe training as something that exists, without any detail on who receives it, what it covers, or how effectiveness is measured. The Home Office's own review of statement quality has consistently identified training disclosure as one of the weakest areas across the registry.
The gap matters because a modern slavery statement without a trained workforce is largely performative. The document describes commitments; the training is what equips people to honour them.
Understanding where modern slavery risk concentrates is the starting point for deciding who needs training and on what.
Labour exploitation in UK supply chains is not evenly distributed. It clusters in sectors characterised by low margins, high use of agency or migrant labour, and limited direct oversight: agriculture, food processing, construction, warehousing and logistics, domestic cleaning, car washing, and nail bars. For organisations that procure from any of these sectors directly or indirectly, the question is not whether exploitation could be present in their supply chain, but whether they have the capability to recognise it if it is.
The International Labour Organisation's indicators of forced labour provide the clearest operational framework for identification. They include restriction of movement, withholding of wages, retention of identity documents, debt bondage — where recruitment fees have created a debt the worker cannot repay intimidation and threats, and excessive working hours with no freedom to refuse. None of these indicators is visible from a supplier questionnaire. They require someone on the ground, or someone trained to ask the right questions of the right people, to surface them.
For logistics and transport operations specifically, debt bondage in recruitment is a documented and growing risk. Migrant workers — including HGV drivers and warehouse operatives — are sometimes charged fees by overseas recruitment agencies that bear no relation to the actual cost of placement. By the time they arrive at work, they are already indebted and already vulnerable. Organisations that rely on agency labour without scrutinising the recruitment chain upstream of that agency are carrying risk they may not be aware of.
Most organisations that take modern slavery seriously have policies. Supplier codes of conduct. Anti-trafficking statements. Procurement frameworks that reference ethical labour standards. These are necessary, but they are not sufficient.
Policy describes what the organisation expects. Capability determines whether anyone in the organisation can act on it. The two are not the same thing, and the gap between them is where exploitation persists.
Effective modern slavery training is not generic. A procurement manager evaluating a new overseas vendor needs a different set of skills from a logistics coordinator visiting a third-party warehouse, and both need something different from an HR professional interviewing agency workers. The common thread is an understanding of what exploitation looks like in practice — not in abstract — and confidence in what to do when they see it.
Whistleblowing infrastructure matters here too. The most sophisticated supply chain audit is worth considerably less if workers who have identified exploitation do not believe they can report it safely. Anonymous reporting channels, clearly communicated and genuinely protected from retaliation, give organisations an early warning system that no external audit can replicate.
The Modern Slavery Act's disclosure requirement applies to organisations above the turnover threshold, but the compliance pressure does not stop there.
Larger organisations subject to Section 54 are increasingly requiring their suppliers — regardless of size — to demonstrate that they have taken steps to address exploitation risk. This is showing up in tender requirements, contract schedules, and supplier onboarding questionnaires. A business that cannot demonstrate a considered approach to modern slavery training and supply chain due diligence is becoming harder to place with certain public sector and large commercial clients.
Human rights due diligence is also moving in a more prescriptive direction at the regulatory level. The EU's Corporate Sustainability Due Diligence Directive, which applies to EU-market-facing organisations, introduces mandatory human rights due diligence obligations that go substantially further than Section 54. UK businesses with European operations or clients are already within its scope in some cases.
The practical upshot: the threshold for what counts as adequate preparation is rising, and organisations that have treated modern slavery compliance as a statement-writing exercise are increasingly exposed.
The most common failure mode in modern slavery training is scope. Organisations either train everyone on a generic module that covers the basics without equipping anyone to act, or they train only the compliance function and assume the message will filter through.
Neither approach works. The indicators of exploitation are most likely to be spotted by people in operational roles — procurement, logistics, HR, facilities management — who have regular contact with suppliers, contractors, and workers. Those are the people who need training that goes beyond definitional awareness and into practical identification.
Effective training for these groups typically covers: what forced labour and debt bondage look like in the specific sectors the organisation works in; how to conduct supplier visits and worker interviews in ways that are more likely to surface genuine conditions; what to do internally and externally when a concern is identified; and how the organisation's whistleblowing and reporting processes work in practice.
Annual refreshers matter too. Modern slavery is not a static threat. The methods used to recruit and control victims evolve, the sectors and geographies that carry highest risk shift, and the regulatory environment changes. Training that was current three years ago may not reflect what procurement or logistics teams are likely to encounter today.
It is worth noting that modern slavery training obligations extend well beyond commercial supply chains. Public sector bodies including police forces, local authorities, NHS trusts, and central government departments have specific responsibilities under the Modern Slavery Act and related safeguarding frameworks that go beyond supply chain compliance.
Front-line public sector workers are frequently among the first people to encounter potential victims in custody suites, in A&E departments, in schools, in housing services. Training in victim identification, referral pathways, and the operation of the National Referral Mechanism is not a compliance matter for these organisations; it is an operational necessity. And it requires regular updating as the profile of victims and the nature of exploitation change which, as the most recent NRM data makes clear, they are.
Understanding how exploitation is identified and missed in practice is explored further across our Modern Slavery Training.