Jihadi nuts have been circulating the new poster depicting a suicide bomber standing in front of a burning Big Ben.
It is captioned with the warnings “London attacks coming soon” and “just terror”, also showing a burning Union Jack.
ISIS fanatics have issued the new threat on the second anniversary of the atrocity committed by terrorist monster Salman Abedi.
He killed 22 concertgoers who had just seen pop star Ariana Grande when he detonated a homemade bomb.
It was the first in wave of terrorist attacks which rocked Britain in 2017 – but there have been no successful attacks since the bombing on the Tube at Parsons Green.
The threat to London also includes a quote from the Koran’s At-Tawbah 5 – or the "Sword Verse".
It reads: “And when the sacred months have passed, then kill the polytheists wherever you find them and capture them and beseige them and sit in wait for them at every place of ambush.”
The verse carefully excludes teachings urging them to “protect” unbelievers and “grant protection till he hears the words of God” as ISIS pervert the teachings of Islam.
Security group Terrorism Research and Analysis Consortium (TRAC) shared the new wave of propaganda on Twitter.
It cites them as being created by the Ash-Shaff Media Foundation – a propaganda wing of ISIS.
Home secretary Sajid Javid confirmed this week that 19 major terrorist attacks have been foiled in Britian.
He said 14 were islamist and the other five were from "right-wing ideologists".
Javid warned "we are all potential victms" with terrorist attacks happening all over the world.
He added: "Despite this impressive work, the tempo of terrorist activity is increasing."
Another poster released shows a masked terrorist strapped with a bomb wielding a knife above New York.
It urges lone wolves to “fight them in your country” – a long often used in jihadi propaganda – and also includes the phrase “just terror”.
The final poster features a lengthy verse in front of an ISIS flag.
It also includes a picture of a masked fighter, and directly claims it is from “Islamic State”.
The poster reads: 'Remember O you who have believed, whoever of you should revert from his religion
“Allah will bring forth in place of them a people he will love and who will love him... who are humble toward the believers, powerful against the disbelievers... they strive in the cause of Allah and do not fear the blame of a critic.
“That is the favour of Allah, he bestows it upon whom he wills.
“And Allah is all encompassing and knowing.”
ISIS have been smashed after they were driven out of their final bolthole in Baghouz, Syria.
The terror group at its height held territory the size of Britain across the Middle East.
Jihadis have been emboldened however as ISIS leader Abu Bakr al-Baghdadi resurfaced for the first time since 2014.
Britain's terror alert level has been "severe" - meaning an attack is "highly likely" - since September, 2017.
