THE SNP is piling the pressure on David Cameron over his financial affairs with Nicola Sturgeon accusing the Prime Minister of "betraying public trust" and bringing politics into disrepute and as her colleague Angus Robertson calls for the Tory leader to make a full Commons statement when MPs return on Monday.

Mr Cameron's declaration that he has nothing to hide and paid all due tax he made on the money he had in an offshore trust has failed to lift the political pressure.

The First Minister in a forceful intervention called for "full transparency" from the PM and urged the UK Government to adopt the toughest possible measures on tax avoidance and evasion.

She also questioned the silence of Scottish Tory Leader Ruth Davidson on her Conservative colleague's tax affairs; Ms Sturgeon's opponents will accuse her of seeking to gain political capital from the Panama Papers row to gain political advantage in the Holyrood election campaign.

“David Cameron must now be completely transparent around his tax affairs. After four days of ducking and diving it is now clear that he personally benefited from offshore investments," declared the FM.

“Whether or not it was legal, the tortuous way the information was dragged out of the Prime Minister leaves his credibility in tatters and completely betrays public trust.

“And to claim that the UK government is cracking down on offshore investments and tax havens while blocking EU moves to increase transparency is utterly hypocritical," she claimed.

The SNP leader said there were now questions to answer over whether Mr Cameron’s interests had influenced his actions in parliament and if they should have been declared in full before now.

“People expect the very highest standards from the Prime Minister in this regard," stressed Ms Sturgeon.

“In Scotland we have introduced robust anti-avoidance rules,among the toughest in the world. The UK Government should follow our lead in cracking down on tax avoidance."

She added: “And once again Ruth Davidson has remained silent while her Westminster colleagues bring politics into disrepute. She must make it absolutely clear that she condemns Cameron’s actions, on delaying and dodging the difficult questions.”

Meantime, Mr Robertson, the Nationalist leader at Westminster, tweeted: "When House of Commons returns on Monday Prime Minister Cameron must make statement to parliament."

The PM has insisted he does not have "anything to hide" about his financial affairs after revealing he and his wife sold shares worth more than £30,000 in an offshore tax haven fund set up by his late father.

The Tory leader has faced intense pressure to detail his interests since the Panama Papers leaks included details of Blairmore Holdings - which used "bearer shares" to protect investors' privacy.

In an interview with ITV News, he insisted it was a "fundamental misconception" that it was set up to avoid tax, saying his father Ian, from Aberdeenshire, was being "unfairly written about".

And he said that while his and Samantha's profit from the scheme was "subject to all the UK taxes in the normal ways", it came to just below the threshold at which capital gains tax would have applied.

No 10 said Mr and Mrs Cameron bought their holding in April 1997 for £12,497 and sold it in January 2010 for £31,500.

The annual personal allowance for an individual in 2009-10 was £10,100; meaning jointly the profit was just outside the threshold.

Mr Cameron, who has been a prominent campaigner for increased tax transparency, also repeated his willingness to publish his own tax returns. Downing Street later confirmed this would take place "as soon as possible".