More than 300 economists have signed an appeal to Prime Minister David Cameron and other heads of state, which referred to the necessity of ending the activities of offshore zones.
The letter emphasized that offshore only increase the level of corruption in the world and help international corporations to obtain financial gain at the expense of others.
The document published in anticipation of the opening this week at the London conference on the fight against corruption.
A month ago hit the press millions of documents Panamanian law firm Moak Fonseca drew attention to the activities of offshore companies.
They state that Mossack Fonseca in some cases has helped clients launder money to avoid sanctions and tax evasion.
The experts say that Panama is not included even in the top ten of the most closed from the regulatory bodies of the offshore companies,- informs Bi-bi-si.