"Even here I do not feel safe. Something can happen at any time," says Iranian exile Marzieh, speaking at a secret location in East Barnet.
Marzieh has spent the past 20 years looking over her shoulder since fleeing from her home town in northern Iran, and is too scared to tell us her surname.
As a member of the People’s Mojahedin of Iran (PMOI), she was opposed to the Islamist regime headed by Ayatollah Khomeini, making her a target for the Revolutionary Guards loyal to him.
"There was a lot of support in my home town for the PMOI because people were more open-minded," she said.
"In June 1981, the Revolutionary Guards raided many homes, including those of my parents, cousins and friends. They were arrested and some friends were executed. It was as quick as overnight it was horrible."
Marzieh, 45, recalls the events in stuttering English, shaking as she speaks.
"I was lucky I was not at home that night otherwise my fate would have been something different," she said.
She fled to Britain in 1985 to claim political asylum and since then has studied events in the Middle East with interest. Recently she has become increasingly concerned as Tehran has resumed a uranium enrichment programme, which the West fear could lead to Iran developing nuclear weapons.
Together with friends who sympathise with Iranians opposed to the regime, she set up the Anglo-Iranian Society (AIS) in Barnet last year, a group which aims to educate the people of Britain and give a voice to the millions of Iranians who cannot speak out in their home country.
Thomas Darby, chairman of AIS, said the group supports the National Council of Resistance of Iran (NCRI), effectively a government-in-waiting, based in France. The NCRI has an elected leader, Maryam Rajavi, who would be proposed as the new national leader should President Mahmoud Ahmadinejad’s regime be toppled. Mr Darby said: "We support their call for a change in Iran that will hopefully lead to the downfall in some way of the current regime."
Georgina Oliver, as a volunteer for AIS, approaches churches in the borough to discuss the situation with clergymen, who can then share the information with people in their communities. Mrs Oliver said: "It is slow work, but it is happening. We are also contacting libraries to give out our information and we are going to have a DVD available to people who wish to look into things a bit further."
She plans to send information to universities and aims to arrange fundraising events to allow the group to expand.
Since Mr Ahmadinejad came to power in June, relations between Iran and the governments of the Western world have deteriorated further. In October, he was criticised after calling for the destruction of Israel. Marzieh believes people have a misguided view of the Iranian people because of the president’s outbursts.
"One of our objectives is to combat fundamentalism," she said. "The regime says Israel should be wiped off the map, but we are totally against that and we need to educate people to make them see that is not how all Iranians think. It is not what the Iranian people want, it is only the fundamentalist regime which thinks like this."
Marzieh said her resistance to Mr Ahmadinejad’s regime was influenced by several factors.
"Women are treated as second-class citizens," she said. "Discrimination is written into the law and women cannot be judges or leaders. I am a Muslim and I wear my headscarf through choice, I do not want someone to force me to wear a hijab."
She continued: "Since the events of September 11, the Madrid bombing and the London bombings in July, I realise that fundamentalism is increasing rapidly and being exported to other countries by Iran. The root of fundamentalism is in Iran.
"Every day we see suicide bombers in Iraq many of them have been trained in Iran. Although the London bombers were English, their thinking was from Iran. Even in Pakistan, where the London bombers were trained, that ideology comes from Iran.
"The security of the world is threatened because of this Islamic fundamentalism."
The group believes the international community now has three options to deal with Iran. They do not favour two of them, appeasement and military intervention, but, they say, the NCRI could bring about a revolution if supported by countries such as Britain and America.
Mrs Oliver said: "The Western countries have decided to appease Iran, but you cannot appease people who are hell-bent on domination through Islamic fundamentalism."