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A shocking documentary has exposed a group of British women as Islamic State sympathisers who are urging young women to leave the UK and travel to Syria.

Captured on hidden cameras over the course of a year, the chilling footage shows the women using slurs when talking about Jewish people and proclaiming that they "do not submit to the law of any country, any nation".

The documentary, called ISIS: The British Women Supporters Unveiled which airs on Channel 4 tonight at 9pm, also shows women glorifying jihadis and promoting extreme ISIS ideology both online and directly to young women.

Captured in the months before the deadly Paris attacks, the undercover footage shows three women who identify themselves as Umm Saalihah, Umm L and Umm Usmaan on Twitter.

(Image: Channel 4) (Image: Channel 4)

Two operate in positions of authority within their circles and lecture women in secretive study sessions.

They were all tracked down by undercover reporters after promoting pro-ISIS ideology on social media platforms.

The undercover then managed to meet the women at an Islamic roadshow in Leiwsham, south London after extensive direct messaging on Twitter.

(Image: Channel 4) (Image: Channel 4)

Gaining their trust, she is able to join them at their closely-guarded women-only study sessions which are strictly by invitation only.

The investigation was brought to a close four weeks before the attacks on Paris when the women – who were all established close contacts - became suspicious of the undercover reporter.

The leader of the study circles Umm L challenged the reporter, preventing her from leaving unless they can look through her possessions.

Eventually the reporter was able to leave but was banned from future contact and attending future sessions.

(Image: Channel 4) (Image: Channel 4)

After watching the footage, former chief prosecutor for the counter-terrorism expert Hannah Stuart said: "At the moment we’re not just concerned about young men going to fight for Islamic State, we are concerned about entire families leaving this country to emigrate and live in Islamic State, and it’s lessons like this that will encourage women to do that and make them believe that its’ their religious duty to do so. This is a nation-building project.”

“I think that the women skirt the line of inviting support for a proscribed terrorist organisation, and by that I mean Islamic State, but also by inviting one another to these study circles if it can be proven that they are advancing the cause of the group then that would also be an offence as well.”