BNP leader Nick Griffin had to abandon a press conference outside the Houses of Parliament after protesters barracked him and threw eggs.
Shouting "off our streets Nazi scum", the demonstrators chased him down the street to his car.
Mr Griffin, who has been elected an MEP for the North West of England, was guided to his vehicle by his bodyguards and quickly drove off.
He had arrived at the press conference on College Green in front of Parliament with fellow newly-elected BNP MEP Andrew Brons.
Mr Griffin started by attacking articles from the day's newspapers which criticised him and his party.
But he had only been speaking for a few minutes when the protesters appeared, chanting and waving banners reading: "Stop the fascist BNP."
Eggs were thrown at Mr Griffin and his bodyguards bund
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