Publicist Max Clifford has been signed up to help the UK Independence Party for the European elections in June.
Clifford has helped controversial stories hit the headlines
Mr Clifford says European issues are not about being left-wing or right-wing but about "who governs Britain".
The party is fighting the polls on a platform of calling for Britain to pull out of the European Union.
It says it now has an "election dream team", with Dick Morris, who was adviser to Bill Clinton during his presidency, also on board.
Mr Clifford is Britain's best known PR guru and has been involved in a string of high-profile news stories.
In recent years he has helped expose Jeffrey Archer and liaised with the media over the story of Siamese twins Gracie and Rosie Attard.
But he has usually been seen as a Labour supporter and an admirer of Tony Blair.
On his new role, Mr Clifford said, "When it comes to Europe, it is not about being left wing or right wing. It is about who governs Britain: Westminster or Brussels?
"The UK Independence Party and myself are in complete agreement that the British people should be the masters of their own destiny through our parliament at Westminster, not subservient to Brussels."
UKIP leader Roger Knapman said he was delighted Mr Clifford had joined the campaign.
"We need to get the message across that the UK Independence Party is the only party calling for Britain's withdrawal from the European Union, and Max will be invaluable to us in achieving that."
It marks another high-profile name for the party, which boasts boxing promoter Frank Maloney as its London mayoral candidate.
And the party also persuaded Tony Martin, the Norfolk jailed for killing a teenage burglar in August 1999, to address its annual conference last year.
A UKIP spokesman said the party would field a full slate of candidates in all European regions in the UK, apart from Northern Ireland.
It also hoped to put up about 1,000 candidates and so had a chance of screening a party election broadcast, he said.
Asked about the cost of the high-profile advisers, the spokesman said Mr Morris was "working for a fraction of his fee" but did not know about Mr Clifford's terms.