British Prime Minister David Cameron is expecting to face harsh questions in Parliament about his personal investments after releasing some tax information over the weekend.

Opposition leaders plan to challenge Cameron Monday over his explanation of his past investment in an offshore account set up by his late father.

The fund was not illegal but Cameron's disclosures have overshadowed what he claims is his government's commitment to make it harder for Britons to avoid taxes.

He plans to introduce a bill that would hold employers criminally liable if they permit employees to promote tax-dodging schemes.

Cameron's late father, Ian, has been identified as a client of a Panamanian law firm that specializes in registering offshore companies and that has just suffered the biggest data leak in corporate history.