A group of corporate executives including the UK’s Sir Richard Branson and…Andrew Forrest have launched a campaign to urge top global companies…to sign up to a voluntary regime aimed at eradicating use of forced labour…Myanmar became the first government to sign the campaign pledge…Sir Richard, who chairs the Virgin Group, and Mr Forrest, chairman of Australia-based Fortescue Metals…jointly launched the campaign, which is urging 25 top companies, including Apple, GE, Microsoft, Chevron, IBM and Walmart, to pledge by March 31 to “end modern slavery” by identifying, eradicating and preventing forced labour in their operations and supply chains…Already, more than 260 companies…have signed the pledge, led by Fortescue, the Virgin Group and Inditex, parent company of clothing maker Zara…Alongside securing corporate pledges, the campaign will publish a global “slavery index” next August on conditions in 160 countries…