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Charged With Modern Slavery or Human Trafficking

A guide to UK modern slavery and human trafficking investigations.
Adam Rasul – Holborn Adams director, criminal defence lawyer
Adam Rasul
July 27, 2026
child trafficking

Table of Contents

Allegations involving modern slavery or human trafficking are among the most serious criminal offences in the UK. Even before any charges are brought, a police investigation can have a major impact on your personal life, career, finances, and reputation.

Many people assume that modern slavery only involves organised crime groups moving people across international borders. In reality, it covers a much wider range of conduct. Investigations can involve employers, businesses, family members, or anybody accused of exploiting vulnerable people.

If you become the subject of a modern slavery or human trafficking investigation, you should obtain specialist legal advice as early as possible. This is key to helping you protect your interests and your options.

modern slavery act​

What Is Modern Slavery Under UK Law?

There is a difference between the modern-day slavery definition and what modern slavery means under UK law.

The former is an umbrella term for situations of exploitation in which people cannot refuse or leave. In the UK, the law focuses on slavery, servitude, forced or compulsory labour, and human trafficking. It does not only concern people being moved across international borders.

These offences are primarily governed by the Modern Slavery Act 2015, which established a single legal framework for investigating and prosecuting them. 

The Types of Allegations That Can Lead to Modern Slavery Charges

Modern slavery investigations can involve labour exploitation, where vulnerable people are forced to work in unsafe or unfair conditions. Others involve allegations of sexual exploitation, child trafficking, domestic servitude, or organised criminal exploitation.

Depending on the circumstances, allegations can involve employers, businesses, recruitment agencies, landlords, and even family members. Many cases require investigators to review large amounts of financial, digital, and documentary evidence before deciding whether to bring charges.

How Modern Slavery Investigations Work

Modern slavery investigations are often large and complex. Depending on the allegations, they may involve the police, the National Crime Agency (NCA), Immigration Enforcement, and HM Revenue & Customs. Sometimes, they will involve international law enforcement agencies as well.

It is not unusual for cases involving organised crime or cross-border activity to continue for many months or even years. This is because investigators usually gather extensive evidence before making charging decisions, such as:

  • Mobile phone data
  • Financial records
  • CCTV footage
  • Travel history
  • Employment records
  • Digital communications

Because important decisions are made throughout the investigation, obtaining legal advice early can help ensure your position is properly represented throughout the process. 

Victims Can Sometimes Become Suspects

In some cases, people accused of modern slavery offences may themselves have been victims of exploitation or coercion. They may have been forced to commit offences, work in illegal conditions, or take part in criminal activity because they were threatened, controlled, or manipulated by others.

The National Referral Mechanism (NRM) is the UK's official framework for identifying and supporting potential victims of modern slavery. Where there is evidence that someone has been trafficked or exploited, this may have a strong impact on any criminal proceedings.

The Modern Slavery Act also provides a statutory defence for people who committed offences because they were compelled to do so. However, these cases depend heavily on the individual facts and circumstances.

Such a defence requires specialist legal representation from the earliest stage of the investigation.

Why Early Legal Representation Matters

In a modern slavery investigation, waiting until charges are brought can mean missing valuable opportunities to influence the investigation.

An experienced solicitor can engage with the police, advise you during police interviews, review financial and digital evidence, and identify material that supports your position.

Early legal representation may also help challenge inaccurate assumptions and correct misunderstandings. Where the evidence does not support a charge, your solicitor may be able to prevent criminal proceedings altogether.

Why Choose Holborn Adams?

Modern slavery and human trafficking investigations require experienced legal advisers who understand both the law and the realities of complex criminal investigations.

At Holborn Adams, we have a stellar track record for representing clients facing serious allegations. As an international firm with global recognition, we have experience working on cases involving multiple agencies, complex charges, and cross-border investigations.

Using strategic pre-charge representation, we proactively analyse the evidence and identify opportunities to protect our clients before charging decisions are made.

Whether your case involves allegations of labour exploitation, human trafficking, or another offence, we work to ensure investigators have a complete and accurate understanding of the evidence before charging decisions are made. 

Frequently Asked Questions

What is considered modern slavery under UK law?

Modern slavery includes slavery, servitude, forced or compulsory labour, and human trafficking. These offences are mainly prosecuted under the Modern Slavery Act 2015 and cover a wide range of exploitation, including acts that occur within the UK and across international borders.

What is the difference between human trafficking and modern slavery?

Human trafficking involves arranging or facilitating the movement of a person for the purpose of exploitation. Modern slavery is the broader term and includes trafficking as well as offences such as slavery, servitude, and forced labour.

Does UK sex trafficking law fall under the Modern Slavery Act?

Yes. In England and Wales, sex trafficking offences are usually prosecuted under the Modern Slavery Act 2015. Depending on the circumstances, investigations may involve allegations of human trafficking, sexual exploitation, or other offences under the Act.

How does the National Referral Mechanism work?

The National Referral Mechanism (NRM) is the UK's framework for identifying and supporting potential victims of modern slavery. It allows authorised organisations to refer individuals for an assessment. This helps determine whether they may be entitled to protection and support.

How are modern slavery investigations carried out in the UK?

Investigations often involve the police, the National Crime Agency, Immigration Enforcement, and other specialist agencies. Officers may examine digital communications, financial records, travel history, employment documents, and witness evidence before making charging decisions.

Does being investigated for modern slavery mean you will be charged?

No. An investigation does not automatically lead to criminal charges. Investigators must review the evidence before deciding if there is a realistic chance of conviction. They must also decide if a prosecution is in the public interest.

Can someone be prosecuted even if they were themselves a victim of trafficking?

Yes. The law recognises that victims of human trafficking may have been compelled to commit offences. In appropriate cases, the Modern Slavery Act 2015 provides a statutory defence, making specialist legal advice particularly important.

Should I speak to the police before instructing a solicitor?

It is generally advisable to obtain legal advice before answering police questions. A solicitor can explain the allegations and protect your rights during interviews. They can also help you avoid saying something that could harm your case.

Should I seek legal advice as soon as I become aware of a modern slavery investigation?

Yes. Early legal representation allows your solicitor to engage with investigators during the pre-charge stage. They can review the evidence and develop a strategic defence before the prosecutor makes charging decisions. Acting promptly often provides the best opportunity to protect your rights and achieve the strongest possible outcome.

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Andrew Ford | Director | Holborn Adams
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