Marina Walker, deputy director of the International Consortium of Investigative Journalists, talked to Jonny Gould and Ash on talkRADIO about the work involved in the Panama Papers story.
It involved 11.5 million documents from offshore law firm Mossack Fonseca and linked a number of high profile individuals to vast sums of money housed in offshore accounts.
"The advantage of ICIJ is that we are a pre-established network of journalists," Ms Walker told talkRADIO. "We already know one another. We trust, for the most part one another.
"This is not the first time we've done this. That is hugely important. Embargos are crucial, and if anyone jumps the gun we'll never work with them again."
She also commented on the number of childhood friends of Vladimir Putin who show up in the data, and said the pattern is always the same.
"Shuffling around hundreds of million dollars at a time he's gaining access to state owned companies, for not particularly obvious reasons."