Revelation: The so-called Panama Papers, part of a leak of 11million files, implicate those in Russian president Vladimir Putin's inner circle, along with families and associates of Syria's president Bashar al-Assad (above)



King of Saudi Arabia, King Salman bin Abdulaziz bin Abdulrahman Al Saud (pictured left) was also named

King of Saudi Arabia, King Salman bin Abdulaziz bin Abdulrahman Al Saud (pictured left) was also named

Argentina's president Mauricio Macri (pictured) and Ukraine's president Petro Poroshenko were listedUkraine's president Petro Poroshenko was listed
Argentina's president Mauricio Macri (left) and Ukraine's president Petro Poroshenko (right) were listed

German newspaper Suddeutsche Zeitung obtained the files and shared with the International Consortium of Investigative Journalists but the identity of the source who leaked them and how it was done is unknown. 
The unprecedented leak of confidential documents reveal:

Putin's name is not included in the records but his friends and associates appear to have earned millions of pounds from deals that would have been difficult to secure without his patronage. The BBC and The Guardian set out the details in the documents.

Among the disclosures are that six members of the House of Lords and three former Conservative MPs had offshore accounts, although the only British politicians so far named are Lord Ashcroft, Tory peer Baroness Pamela Sharples and former Conservative MP Michael Mates. Dozens of donors to UK political parties had similar arrangements, the leak reveals.

Campaigners said David Cameron now faces a 'credibility test', having promised to end tax secrecy four years ago.