UK businesses will be required to disclose all their efforts to end slavery, under a Bill launched in Parliament.

The Transparency in Supply Chains Bill, drafted by the Centre for Social Justice and Labour MP Fiona MacTaggart, will demand that businesses investigate whether their supply chains are slave-free.

As part of landmark measures to raise awareness about the nature and scale of human trafficking, businesses will be encouraged to conduct an audit of their suppliers to check that they comply with anti-slavery laws.

An estimated 27 million people are enslaved worldwide and this latest legislation will prompt all UK businesses, with a turnover of over £100 million or more, to take responsibility to end this appalling abuse.

Employees working with suppliers should be trained to blow the whistle on questionable practice, and all information of the vital work being done to combat slavery should be published online as part of the business’s annual review.

The Bill, intended to foster cooperation and build a consensus on slavery, is expected to prompt a cultural change similar to that brought about by the environmental or fair trade movements.

The CSJ is conducting an 18 month review of slavery in the UK which will be published in the Autumn of 2012.