"We must occupy the embassy and get rid of the English spies," chanted the crowd of demonstrators.

"Death to England, death to Germany, death to France, death to the United States, death to Israel," the members of the Islamic militia of universities in Tehran and the provinces sang.

They called for Iran to withdraw from the Non-Proliferation Treatyand to continue the nuclear activities it resumed in the past week.

"NPT, leave it now", "Enrichment must restart in Natanz", "Nuclear engineering is our right", proclaimed the banners the protestors, who were blocked from entering the British embassy by police and special forces.

Iran has been in talks with European negotiators Britain, France and Germany on providing guarantees the nuclear programme is only civilian, in exchange for a package of technical and economic incentives.

Iran rejected the Europeans proposals however and said on August 8 that it had resumed uranium conversion at its Isfahan plant. Tehran has so far maintained its suspension of uranium enrichment at its Natanz facility.

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