Amongst the millions of documents released in the ‘Pandora Papers’ leak of offshore financial information are a number of documents that one British Iranian family business would rather have remained hidden. In this investigation Assignment follows the trail of millions of dollars tainted by bribery and corruption. Piecing together key documents from the leak reveals how earnings from Unaoil – a company involved in winning oil and gas contracts through bribery in the Middle East - were invested into UK property.

Why does the UK remain a go-to destination for some of the world’s most tainted money? And why does it take a leak for the truth to be revealed about who’s really invested in some of the country’s prime property?

Reporter: Felicity Hannah
Producer: Anna Meisel and Kate West
Editor: Gail Champion

(Image: Pandora Papers illustration. Credit: BBC)