Speaking after five hours of talks in London, Javier Solana, head of foreign policy at the EU, says he expected more from Iran, and that no offer had been made to suspend uranium enrichment.

By contrast, the Iranian nuclear negotiator, Saeed Jalili, offers a positive spin on the discussions.

“For five hours now I have been talking with Mr. Solana and we have had good negotiations,” he says. "We agreed to continue with our negotiations and we also agreed to arrange for a meeting next month.”

The talks have been viewed as potentially Iran’s last chance to dissuade the US and its allies from pressing for further sanctions against the country.