The Pandora Papers is a leak of almost 12 million documents that reveals hidden wealth, tax avoidance and, in some cases, money laundering by some of the world's rich and powerful.<br /><br />More than 600 journalists in 117 countries have been trawling through the files from 14 sources for months, finding stories that are being published this week.<br /><br />BBC Panorama and the Guardian have led the investigation in the UK.
