A Labour MP has launched a blistering attack on David Cameron's father's alleged tax avoidance, branding it "utterly disgusting".
The Panama Papers, leaked earlier this week, revealed that the prime minister's late father, Ian Cameron, ran an offshore investment fund.
Mr Cameron has since come under pressure to explain his family's tax arrangements.
"The sins of Daddy Cameron were not illegal but they are utterly disgusting," Jess Phillips, MP for Birmingham Yardley, wrote in the Huffington Post.
"They are worse than the sins of fathers up and down the country who can’t find work, even the most feckless amongst them."
Phillips said David Cameron had no right to say his father's actions were not his fault as his government's policies penalise children for the conduct of their parents.
"So in Tory Britain poor kids are paying the price for the actions of their parents but David Cameron doesn't have to?"
She also claimed Mr Cameron had only got to where he is now because of his privileged upbringing.
"He’s not a very clever boy, he’s a very average boy who used privilege rather than brains to get where he got."
The prime minister told reporters on Tuesday that he has "no shares, no offshore trusts, no offshore funds".
Downing Street also released a statement, insisting Mr Cameron, his wife or their children will not benefit from any offshore funds/trusts in the future.