In a joint investigation with The Namibian, we established that the southern African country missed out on capital gain tax worth N$ 219m (US15.8m) when Australian firm, Paladin Energy sold a 25% stake in its uranium mine to the Chinese National Nuclear Corporation.

By transacting the sale offshore in Mauritius, Paladin claimed it was not liable to pay capital gains tax on the profits it made on the sale.

Our story had significant impact. Namibian tax officials admitted they were not aware of the deal until we quizzed them about it. A day after publication, the Namibian treasury released a statement confirming it was trying to claw back the tax it says it is owed. And BBC World followed up our story.

Read the full investigation on the Namibian website here