Jeremy Corbyn welcomed a group of notorious Islamic extremists to Parliament, including one who led a boycott of Holocaust Memorial Day and called for attacks on the Royal Navy, MailOnline can reveal.

The meeting, which took place in the House of Lords just six months before Corbyn became Labour leader, included at least four of Britain's most influential extremists.

It comes as it emerged that Corbyn went with spin doctor Seamus Milne on a secret visit to Hamas extremists in Ramallah in 2010, failing to declare the trip in violation of parliamentary rules.

A picture from the 2015 event in Parliament shows Corbyn flanked by Daud Abdullah, who signed a letter saying that the Royal Navy should be attacked if it tried to help prevent weapons from being smuggled to terror groups in Gaza.

Also visible is Azzam Tamimi, who said he wanted to blow himself up in a suicide attack. 'Sacrificing myself for Palestine is a noble cause,' he told the BBC. 'It is the straight way to pleasing my God and I would do it if I had the opportunity.'

Zaher al-Birawi, who is close to the Hamas leadership and has posed for pictures with terror chief Ismail Haniyeh, can be seen just two spaces away from Corbyn, along with Mohammed Swalha, who represented Hamas in a visit to Russia last year.

Jeremy Corbyn pictured at a meeting of Hamas extremists in March 2015, six months before he became Labour leader

Jeremy Corbyn, centre, speaks at the event with pro-Palestinian writer Karl Sabbagh on his left and Zaher al-Birawi, who been pictured with Hamas terror chief Ismail Haniyeh, next to him

Jeremy Corbyn, left, poses with Abdel Bari Atwan, centre, who said he would 'dance with delight' in Trafalgar Square if Iran attacked Israel, and Azzam Tamimi, right, who said he wanted to blow himself up in a suicide attack

Extremists listen to Corbyn's speech. Azzam Tamimi, left, said he wanted to blow himself up in a suicide attack; Mohammed Swalha, who represented Hamas in a visit to Russia last year, second left; Jenny Tonge, who was suspended from the Lib Dems for anti-Semitism, third left; Daud Abdullah, who called for attacks on the Royal Navy and boycotted Holocaust Memorial Day, fifth left

Jeremy Corbyn, far right, and fellow Labour MP Andy Slaughter, far left, pose with Hamas officials Ahmad Attoun, Khaled Abu-Arafah, and Muhammad Totah during a secret trip to Ramallah. Khaled Abu-Arafah and Muhammad Totah had their IDs removed as they were suspected of terrorist activity

The two-hour seminar on 'the politics of Gaza's reconstruction' was hosted by the British peer John Montagu and chaired by Karl Sabbagh, a British Palestinian writer. In Corbyn's speech, he 'catalogued the growing support for Palestine in Europe'.

Corbyn was also pictured sharing a joke with Tamimi, the would-be suicide bomber, in 2013. Daud Abdullah and Mohammed Swalha were also present at that event.

At the same function, the MP posed with Abdel Bari Atwan, editor of a London-based Arabic newspaper editor who told Lebanese media: 'If the Iranian missiles strike Israel, by Allah, I will go to Trafalgar Square and dance with delight'.

The revelations will add to the pressure on the beleaguered Labour leader, who is still reeling from the publication of a picture showing him apparently laying a wreath to the Munich terrorists in Tunisia.

Last week, MailOnline disclosed that a range of the biggest terror leaders in Hamas were invited to the Tunisian conference attended by Corbyn in 2014. One of them gave a speech calling violence 'magnificent'.

The latest developments highlight the depth of Corbyn's connections with Hamas, as the four extremists pictured with him at the House of Lords are all involved with the terror group's British operations.

Hamas is a designated terror group by Britain, the European Union, the United States, Canada, Australia and numerous other countries. Corbyn notoriously called the organisation his 'friends' in 2009, something he later claimed to regret.

Today, an Israeli news outlet reported that the Labour leader held a secret meeting with Hamas officials in Ramallah in 2010, failing to declare the trip in violation of parliamentary rules.

Jeremy Corbyn, left, shares a joke in 2013 with Azzam Tamimi, right, who said he wanted to blow himself up in a suicide attack

Zaher Al-Birawi, who is close to the Hamas leadership, speaks at anti-Israel protest in London

Zaher Al-Birawi, fourth from left, sits beside Ismail Haniyeh, the Hamas leader, fifth from left

Zaher Al-Birawi, left, who has strong Hamas links, pictured with Jeremy Corbyn on his right

Daud Abdullah, who signed a letter saying that the Royal Navy should be attacked if it tried to help prevent weapons from being smuggled to terror groups in Gaza, and led a boycott of Holocaust Memorial Day

That visit was organised by Middle East Monitor (MEMO), a pro-Palestinian pressure group which was also behind the meeting in Parliament at which Corbyn rubbed shoulders with Hamas extremists.

Corbyn's 2010 trip began with a meeting with members of the Islamic Movement, whose leader, Raed Salah, was excluded from the UK because of concerns over his ‘virulent anti-semitism’.

The Labour leader was caught on video praising the hate preacher and inviting him to 'tea on the terrace' at Parliament.

Corbyn went on to meet senior Hamas members in Ramallah and was pictured with men whose ID permits were revoked by Israel as they were suspected of planning 'terrorist activities'.

Labour spin doctor Seumas Milne and radical MP Andy Slaughter accompanied Corbyn on the visit. Footage has emerged of Milne addressing a rally in 2009 in which he said:

'Hamas is not broken and will not be broken because of the spirit of resistance of the Palestinian people'. He went on to describe the foundation of the State of Israel as a 'crime'.

Corbyn and his associates also visited the wife of a man convicted of spying for Hezbollah and met various Palestinian Authority officials. According to the MEMO report, Corbyn’s delegation did not meet a single Israeli Jew.

A Labour spokesman said: 'Jeremy Corbyn has a long and principled record of solidarity with the Palestinian people and engaging with actors in the conflict to support peace and justice in the Middle East. That is the right thing to do.'