Jonathan Evans believes the terrorist threat to Britain was a “generational problem” and said the Westminster Bridge attack earlier this year gave extremists a boost.
Lord Evans, who retired from the Security Service in 2013, told BBC Radio 4’s Today programme: “We’re at least 20 years into this, my guess is that we will still be dealing with the long tail in another 20 years time – I think this is genuinely a generational problem.
“I think that we are going to be facing 20 or 30 years of terrorist threats and therefore we need absolutely critically to persevere.”
An image grab taken from a video released on July 5, 2014 by Al-Furqan Media shows alleged Islamic State of Iraq and the Levant (ISIL) leader Abu Bakr al-Baghdadi preaching during Friday prayer at a mosque in Mosu
“I think that we are going to be facing 20 or 30 years of terrorist threats and therefore we need absolutely critically to persevere”
He continued: “We did see a huge upsurge in threat intelligence after 7 July and I suspect that there’s the same sort of feeling in the period after the Westminster Bridge attack – that a lot of people who thought ‘I’d like to do this’ suddenly decided ‘yep, if they can do it, then I can do it’.”
His comments come after series of crushing blows for Islamic terrorist death cult ISIS.
Last month the sick group confirmed leader Abu Bakr al-Baghdadi had died in an air strike sparking a race to replace him.
And before then the blood-thirsty unit had been plagued by key losses in the Middle East this year.
Militants were even spotted throwing themselves into a river to escape the battlefield in Mosul, the Iraqi city ISIS lost.
Since the March atrocity there have been attacks in Manchester, London Bridge and Finsbury Park.
In an astonishing interview Lord Evans added he’d be “surprised” if Russia were not interested in meddling in UK elections.
He said: “It would be extremely surprising if the Russians were interested in interfering in America and in France and in various other European countries but were not interested in interfering with the UK, because traditionally I think we have been seen as quite hawkish and therefore I would be surprised if there had not been attempts to interfere with the election.”
Daily Star Online previously reported how Premier League clubs are taking more measures against terrorism than ever before following the string of attacks.