MP 'at centre of secret leadership challenge' made comments about being Prime Minister After the reports emerged Mr Afriyie insisted he is "100 per cent supportive" of Mr Cameron and claimed there was "no truth to any of it." Mr Afriyie gave a speech last year at the Conservative Renewal Conference in Windsor just weeks after the Prime Minister's last reshuffle. During the speech he suggested what he would do if he was given a series of senior ministerial positions. He said the Tory party needs "policies that will help to secure a solid Conservative majority" and said those policies "must also influence the current Government." "If I were Chancellor," Mr Afriyie said in the speech. I'd be concerned about removing the age-old obstacles to growth. I'd want to release our risk-takers and wealth creators to generate the jobs and economic growth the country so desperately needs If I were Party Chairman, I'd be concerned about the support base of my Party. I'd want to ensure that the policies adopted had been endorsed by the Party. And I'd want my Party to be motivated and ready to campaign, wholeheartedly, at the next election. And if I were Prime Minister, I'd want to be in tune with my Party and I'd want the right ideas for the country on Europe, taxation and the economy. Several Sunday newspapers reported that MPs had been approached to endorse the credentials of the self-made IT millionaire - who became the party's first black MP in 2005. Nadine Dorries, the Tory MP for Mid-Bedfordshire, said four Conservatives were being talked of as successors to Mr Cameron. She told Sky News" Murnaghan programme: "There are four people who are likely to the next Conservative leader. I think Adam is probably one of them, Jesse Norman, Boris Johnson or Michael Gove. We will see repeated stories about these people over the next two years. It was said to be a "well organised" campaign by individuals concerned about the party's prospects of being returned to office amid poor opinion poll ratings and grim economic news. But the Prime Minister's popular promise of an in-out referendum on Europe appeared to have squashed speculation that it could be part of a plot to oust him before the election. Mark Field, one of those reported to have been pushing Mr Afriyie as a potential leader, said: "I do not think it's any plot against the Prime Minister."