Labour and Bassetlaw MP John Mann has called on David Cameron to resign following revelations about his holdings in his father's offshore trust.
Mr Mann labelled the prime minister a "hypocrite" and in a series of tweets said he had failed to be honest with the British people.
The Treasury Select Committee tweeted: "Cameron has been less than honest. He should resign immediately. Most decent people would expect nothing less.
"Cameron has had six years to be honest with Parliament and the people. He failed to do so. Get out now hypocrite.