Ukip's immigration spokesman Steven Woolfe has had an angry stand-off with Jean-Marie Le Pen, founder of France's National Front party.
He pushed through Monsieur Le Pen's team as the far-right politician spoke to journalists and photographers in Brussels.
Mr Woolfe said the confrontation was with a journalist who had bumped into him and not with Mr Le Pen. "I was not pushing you," he told Mr Le Pen, adding: "I was pushing him - the journalist stepped on me," he claimed.
In pictures: Extremists in the EU
In pictures: Extremists in the EU
1/6 France: Marine le Pen
Marine Le Pen, 45, took over the Front National (FN), the party that her father founded, in 2011. He himself described her as “a big, healthy, blonde girl, an ideal physical specimen." She claims to have cleaned up the FN and succeeded in pushing her anti-European, anti-euro and anti-immigration agenda into the EU political mainstream
2/6 Germany: Udo Voigt
He will be the first German neo-Nazi to enter the European Parliament. The former army officer, born in 1952, was jailed in 1995 for inciting racial hatred. Formerly the leader of the far right National Democratic Party (NPD), Voigt was convicted in 2009 after he was caught handing out flyers at the World Cup which argued that a black player was not entitled to play for Germany, whose national team – the literature argued – should be made up only of white players.
3/6 Denmark: Morten Messerschmidt
Leader of the Danish People’s Party, which won 27 per cent of the vote. His party has rammed 20 laws relating to immigrants and asylum-seekers through the Danish parliament, giving it the most anti-foreigner legislation in Europe. His party calls Islam “a fascist ideology” and rails against “East European criminal gangs”. One party strategist said “blood ties” to Denmark should be required for citizenship, though the statement was quickly retracted.
4/6 Hungary: Krisztina Morvai
A senior member of Jobbik, the anti-Semitic and anti-Roma party on Hungary’s far right wing. In 2009, she attracted international publicity after declaring: “So-called proud Hungarian Jews should go back to playing with their little circumcised dicks.” In 2009, she cancelled an interview with a British newspaper, declaring in tones of outrage: “I am a decent politician and the mother of three children, yet you in the west keep portraying me as a Nazi and a Fascist.”
5/6 Italy: Mario Borghezio
MEP for Italy’s notoriously racist Northern League, he has relentlessly attacked the nation’s first black cabinet minister, Cecile Kyenge, minister for integration, claiming she would import ‘tribal traditions’ into the Italian government. Other elected members in the party called her “an orang-utan” and suggested that someone should rape her, so she would understand how the victims of Somali rapists felt. He attracted attention by lobbying for the creation of an EU archive of UFO sightings.
6/6 Greece: Eleftherios Synadinos
Fabulously mustachioed retired lieutenant-general in the Greek army, he was one of Golden Dawn’s top candidates in the European elections, at which the overtly neo-Nazi party obtained more than 9 per cent of the vote. With its black-shirted assault squads, the Hitler photos and the party’s swastika-inspired logo, it has been accused of being a criminal organisation. Its website declares: “We aren’t the quiet birds of peace time, we are birds of the storm and the hurricane.”
A spokesman for Mr Woolfe said Mr Le Pen's security team had contacted him to apologise for the confrontation.
Mr Le Pen, an MEP for south-east France, has never been far away from the headlines. Earlier this month he launched a scathing attack on his daughter, who succeeded him as leader of Front National, the party he led in five French Presidential elections.
He said he hoped she would marry soon and change her last name after she suspended him from the anti-immigration party for repeating his view of the Holocaust as a "detail of history".
Despite their shared anti-immigration and anti-EU stance, Ukip and the French National Front are not allies in the European Parliament.
Ms Le Pen accused Mr Farage of "political dirty tricks" and "media stunts" last summer after she failed to form an official group in the European Parliament.
Her Front National and its hard-right allies from four other EU countries lost about €22m (£17.6m) in public subsidies when they fell short of the seven nationalities they needed to form a political group in Strasbourg.Reuse content