Labour leadership favourite Jeremy Corbyn has been caught on video praising a hate preacher and inviting him to 'tea on the terrace' at Parliament.

In the latest of a string of revelations about his connections to alleged extremists, Corbyn can be seen referring to Sheikh Raed Salah as an 'honoured citizen' and even inviting him to tea in the House of Commons.

Salah, a prominent member of the Islamic Movement in Israel, was excluded from the UK because of concerns over his ‘virulent anti-semitism’.

In 2011, he was able to slip through border control at Heathrow and give a number of speeches before he was arrested on the orders of the Home Secretary.

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Jeremy Corbyn, left, was caught on camera praising the hate preacher Raed Salah, right

The video (pictured above, a still) shows Jeremy Corbyn praising the Islamist preacher in 2012

The video shows Corbyn speaking in praise of the Islamist preacher in 2012.

If shows Corbyn saying: '[Salah] is a very honoured citizen. He represents his people extremely well and his is a voice that must be heard... I hereby renew my invitation to Sheikh Salah to come to Parliament, meet with me, meet with my colleagues.

'He will be assured of a very warm welcome. I look forward to giving you tea on the terrace because you deserve it.

Salah, who served two years in prison for raising millions of pounds for the Palestinian terror group Hamas and for having contact with an Iranian intelligence agent, has made a number of incendiary and extremist remarks on camera.

Jeremy Corbyn, left, hosted an event at Parliament at which James Thring (right), a notorious conspiracy theorist, made a speech

In a speech broadcast by Qatari Al-Jazeera in 2012, he said: 'Very soon, Muhammad will be the most popular name in Europe.

'I say to you who harbor hatred towards the Messenger of Allah that it will not be long before Allah grants us victory over you.'

Last year, Salah was filmed delivering a sermon in Nazareth in which he said, 'Inshallah, Jerusalem will soon become the capital of a global caliphate.

'The caliphate will spread justice throughout the land after it was filled with injustice by America, the Zionist enterprise, the Batiniyya, reactionism, Paganism and the Crusaders,' he said.

James Thring addresses the audience at Parliament at an event hosted by Jeremy Corbyn

And in 2011, Salah gave an interview in which he laughingly recalls drawing a swastika on a blackboard to taunt a Jewish schoolteacher.

Salah also believes that Israel was behind the 9/11 attacks. In a 2001 article for Sawt al-Haq w’al-Huriyya, the journal of the Islamic Movement, he wrote:

'A suitable way was found to warn the 4,000 Jews who work every day at the Twin Towers to be absent from their work on September 11, 2001, and this is really what happened.

'Were 4,000 Jewish clerks absent [from their jobs] by chance, or was there another reason? At the same time, no such warning reached the 2,000 Muslims who worked every day in the Twin Towers, and therefore there were hundreds of Muslim victims.'

When approached by MailOnline, Corbyn declined to comment.

The video is the latest in a succession of revelations about the Labour leadership candidate.

Earlier this week, it emerged that Corbyn had hosted an event at Parliament at which James Thring, a 9/11 conspiracy theorist, seized the stage and spoke for five minutes.

Despite Thring not being the scheduled speaker Max Blumenthal, who was invited to talk, used his speech to call Israel 'a racist society' in which non-Jewish Africans were 'attacked by right-wing mobs in scenes reminiscent of Kristallnacht'.

Jeremy Corbyn (left) supported Stephen Sizer (right) when he was banned from social media after promoting anti-Semitic material online. Corbyn argued that Sizer had been smeared for his anti-Israel views

Stephen Sizer meets Nabil Kaouk, a top Hezbollah official and militant commander, in Lebanon

That followed the news that Corbyn wrote a letter of support for a vicar who was banned from social media after suggesting that Israel was responsible for the 9/11 attack on the twin towers.

The Reverend Stephen Sizer used his internet accounts to spread ideas which were ‘clearly anti-Semitic’, the Church of England said. He was banned by Church authorities for six months in February.

Corbyn argued that Sizer was 'under attack' by a pro-Israeli smear campaign.

Speaking after the previous revelations, Jonathan Sacerdoti, Director of Communications at the Campaign Against Antisemitism, said: 'No politician should have any association whatsoever with a Holocaust denier like Paul Eisen. It is disturbing to see these pictures of a potential Leader of the Opposition at one of his events.

'Politicians need not only to condemn antisemitism but be seen to distance themselves from it.'

The latest revelations raise serious questions about Corbyn's association with extremists of all stripes.

Corbyn refused five times to condemn IRA atrocities when interviewed by BBC Radio Ulster.

Jonathan Arkush, President of the Board of Deputies of British Jews, said: 'Paul Eisen is a notorious Holocaust denier and if Jeremy Corbyn does have links with him this would be very alarming. We would ask Mr Corbyn to clarify the situation.'