The UK Independence Party's Robert Kilroy-Silk has warned MPs in marginal seats that he is out to get them.
By Nick Assinder
BBC News Online political correspondent
The former TV presenter, whose party scored a sensational breakthrough in recent EU polls, told a lunch for political journalists in Westminster that he was going to stand for a Commons seat at the next election.
Kilroy Silk will seek Westminster seat
And, he said, he had been personally promised as much money as he needed by anonymous donors to put up candidates in marginal seats at the election.
The cash was available "when I push the button," he declared.
Any MP who did not support withdrawal from the EU could be a target, he said, while declaring he was not out just to make mischief.
He and his candidates would be fighting on a whole range of policy issues other than Europe, he insisted.
"We are going to change the face of British politics forever, and I promise you we will not let the British people down," he said.
In a characteristically blunt speaking and sometimes controversial speech, he also pledged that, after 50 years of lies and deceit about Europe, he was going to "destroy that in two years" by telling the truth about the EU.
He attacked his audience for being a metropolitan elite out of touch with the feelings of voters who wanted somebody to stand up for the British way of life.
Holmes wore the Union Jack
He angrily dismissed all suggestions he was racist or xenophobic.
And he criticised multi-culturalism, insisting cultures which repressed women, kept them in the home, or engaged in genital mutilation were not equal to British culture.
"We are going to have a lot to say about multi-culturalism," he said.
As an example, he highlighted Olympic gold medal winner Kelly Homes saying she wore the UK flag. She was not from some other culture, she was British, he added.
But he also said he would not have supported the French move to ban Muslim girls wearing head scarves at school.