British Prime Minister David Cameron has now admitted he did own shares in his father's offshore fund, but says he sold them before he took office.
Cameron has faced questions all week over his family's tax affairs after details were revealed in the leaked Panama Papers.
Ian Cameron was revealed to be a client of Panamanian law firm Mossack Fonseca and had used them to set up the Blairmore investment trust.
David Cameron had earlier denied having any shares in the fund, but has confirmed he and his wife sold them before he became the PM in 2010.
Cameron told ITV News he did not have “anything to hide” and said he paid all UK taxes due on the £30,000 (NZ$62,282) he made from the sale.