Last Tuesday 7 October counter-terrorism officers and armed police have arrested four jihadists plotting a "significant" terror attack in London, and are still interrogating them.
One line of enquiry is that the group was plotting a Mumbai-style gun attack in the capital.
Scotland Yard and the MI5 suspect that the plot was linked to the Islamic State, the first plot directly inspired by the IS. At least one of the four men in their early 20s arrested had recently returned to Britain from Syria.
The police are convinced we are in a more intense phase of Islamic terrorism, increased by the threat of Muslim fighters coming back from their involvement in the Syria and Iraq violence.
Referring to the latest foiled plot, Metropolitan Police Commissioner Sir Bernard Hogan-Howe, speaking to BBC London Radio, gave a grave warning: "[I|t is a quite serious case.
"It is one of a series of arrests that we have had over the last few weeks which taken together for me confirm that the drumbeat around terrorism has changed.
"It's a more intense drumbeat - we are having to be more interventionist and a lot of it is linked back to Syria and Iraq."
It looks like public opinion is getting the message loud and clear, as a Wednesday's YouGov poll showed that three out of four Londoners (74%) think that Britons who have travelled to Syria or Iraq to fight with extremist groups should be banned from returning to the UK.
This is what my party Liberty GB says, and it's been part of our policies regarding Islam since the beginning of the present crisis.
If we break down the survey results, it's interesting to see that women (at 77%) more than men (70%) are in favour of banning jihadists from entering the country.
But only 49% of people aged 18-24 support it, which is the unmpteenth confirmation that lowering the voting age is a bad idea, and it should in fact be increased.
In the last few weeks extra armed patrols have been employed all over London due to fears of increasing Islamic terrorism.
This plot has been foiled, but how long before another one cannot be stopped and we have a new atrocity?
And how long before the public realises that Islam is the problem and the number of Muslims who are sworn enemies of Britain - tiny minorities or not - is very large and counting?