Annual and Financial Report (2016): "A documented whistle-blowing procedure is in place to enable staff to raise concerns in confidence, in matters of financial reporting, financial control or any other issues. These procedures are made available to staff at their time of commencing employment."
However, the MSA does not list any grievance mechanisms related to modern slavery or human trafficking.
I've edited this to include " Whistleblower protection (direct employees)" because the quote presented states that staff can raise concerns in confidence about "any other issues," which includes issues related to modern slavery or human trafficking.
No mention of any kind of grievance mechanism.