Nawaz, an LBC radio host, was speaking after it was reported the three terrorists who killed seven people and injured at least 48 more after launching a deadly attack on London Bridge and Borough Market on Saturday night.
Nawaz told Fox News: “I think we have to come to terms with the fact that Europe, Britain and the rest of Europe are in the midst of a full-blown jihadist insurgency.
“You were citing figures earlier that our security services are attempting to monitor around 23,000 suspected jihadists.
“That, by the way, is out of a population in the UK of just five per cent that are Muslim. That means 23,000 from four million Muslims in this country.
Britain is in the 'midst of a jihadist insurgency', according to Maajid Nawaz
Britain and the rest of Europe are in the midst of a full-blown jihadist insurgency
“Around those 23,000 – those who are jihadists – around them will be those who sympathise with the ideology, Islamists who believe in establishing a caliphate and those who empathise with their friends – if that is not insurgency levels I don’t know what is.”
One of the London Bridge terrorists, who was shot dead by armed police, had links to one of the 7/7 Tube bombers and notorious hate preacher Anjem Choudhry, according to The Times.
Khuram Butt, 27, was deemed a “low priority” despite his links to Mohammed Siddique Khan, who was part of the group who killed 52 people in 2005, and Choudhry, who is in jail for pledging support for ISIS.
Butt was a supporter of al-Muhajiroun, which has been linked with a number of terror plots, and also appeared on Channel 4’s The Jihadis Next Door alongside the hate preacher’s other followers.
Foreign Secretary Boris Johnson has said the public were right to ask questions about how the security services allowed the attackers to “slip through the net”.
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He said they would need to explain how Butt, had continued to go free despite his appearance in the documentary and reports made to an anti-terror hotline in 2015.
Sadiq Khan leads sombre vigil for London terror victims Tue, June 6, 2017
London Mayor Sadiq Khan lead a vigil to commemorate the victims of the London Bridge terror attack. Hundreds attended the event outside London's City Hall
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London Mayor Sadiq Khan bows his head
Speaking on Sky News, Mr Johnson said: “People are going to look at the front pages today, and they are going to say how on Earth could we let this guy slip through the net.
“How could it possibly happen, how can he be on a Channel 4 programme and then be committing atrocities like this?
“That is a question that will need to be answered by MI5 and by the police as the investigation goes on – I can’t answer that question now.”