Two of the country's most notorious radicalisers have been jailed after being convicted of encouraging support for the Islamic State.
Anjem Choudary and Mohammed Mizanur Rahman were found guilty on 28 July following a trial at the Old Bailey.
Choudary, 49, of Hampton Road, Ilford and Rahman, 33, of North Circular Road, Palmers Green were both found guilty of inviting support for ISIS.
According to the courts, Choudary and Rahman are believed to have been recruiters and radicalisers for over 20 years and have been closely associated with another proscribed organisation Al Muhajiroun [ALM].
ALM is said to be the driving force behind a number of people who later committed terrorist attacks including the 7/7 bombings and Lee Rigby's murder .
Pair advised UK Muslims on how to support ISIS
When it was announced that an 'Islamic State' had been established in 2014, Choudary and Rahman were called to provide advice to Muslims in the UK and to pledge their support to ISIS.
At a meeting in a restaurant on July 2, 2014, during which Choudary and Rahman contacted Mohammed Fachry, a convicted terrorist in Indonesia, the pair pledged their allegiance to ISIS and its leader Abu Bakr al-Baghdadi.
Fachry then published this oath, having been signed off by Choudary, on an Indonesian website.
Choudary and Rahman were arrested by officers from the Met's Counter Terrorism Command on 25 September 2014.
Commander Dean Haydon, head of the MPS Counter Terrorism Command said: "These men have stayed just within the law for many years, but there is no one within the counter terrorism world that has any doubts of the influence that they have had, the hate they have spread and the people that they have encouraged to join terrorist organisations.
"Over and over again we have seen people on trial for the most serious offences who have attended lectures or speeches given by these men.
"The oath of allegiance was a turning point for the police - at last we had the evidence that they had stepped over the line and we could prove they supported ISIS."
Commander Haydon said the investigation uncovered 20 years worth of material, including the key evidence which showed the pair had pledged their allegiance to terrorist organisations.
"This has been a significant prosecution in our fight against terrorism and we will now be working with communities to ensure that they are not replaced by others spreading hate," he said.
"Communities defeat terrorism, which is why we must maintain the strong relationship between the public and police. We depend on information from the public, who can be our eyes and ears, in our efforts to keep us all safe.
"We advise the public to remain vigilant and to report any suspicious behaviour or activity to the confidential Anti-Terrorist Hotline on 0800 789 321 - in an emergency always call 999."
August saw anti-terrorism cops issue instructions to Londoners on what to do in the event of a terror attack .
The advice came after Met Police Commissioner Sir Bernard Hogan-Howe said it is inevitable terrorists will strike again, claiming it's a matter of when, not if" .
Choudary and Rahman will be sentenced at the Old Bailey on 6 September.
