3.The Act is in seven parts. Part 1 consolidates and clarifies the existing offences of slavery and human trafficking whilst increasing the maximum penalty for such offences. Part 2 provides for two new civil preventative orders, the Slavery and Trafficking Prevention Order and the Slavery and Trafficking Risk Order. Part 3 provides for new maritime enforcement powers in relation to ships. Part 4 establishes the office of Independent Anti-slavery Commissioner and sets out the functions of the Commissioner. Part 5 introduces a number of measures focussed on supporting and protecting victims, including a statutory defence for slavery or trafficking victims and special measures for witnesses in criminal proceedings. Part 6 requires certain businesses to disclose what activity they are undertaking to eliminate slavery and trafficking from their supply chains and their own business. Part 7 requires the Secretary of State to publish a paper on the role of the Gangmasters Licensing Authority and otherwise relates to general matters such as consequential provision and commencement.