A lot more will have to die before the UK has the stomach to do what's needed.
I wonder what that's needed would be.
Simple. Just stop immigration completely from certain countries/passport holders. The attacks will continue for a few more years or maybe decades, but eventually the terrorists inside will all be dead. These guys have a habit of destroying themselves. ISIS/Muslim extremists inside the UK will not survive.
But of course it will all be back to square one once another bleeding heart liberal/left wing government takes office.
I thought he was going to say develop a "Minority Report" machine.
I can't think of anything else that could reliably work, other than, say create a new religion to absorb and consume said religion.
Stopping immigration - as far as I know, attacks have so far been carried out by local citizens.
Eventually they will eliminate themselves - umm ... as long as there is the internet, overseas travel, etc more will be recruited.
In terms of banning in-bound travel - you must know that about (?)60 countries ban in-bound travel of Israelis/Jews, and has been for longer than most people here have been alive. Not stating my opinion of whether it's right or wrong, just stating matter-of-fact-ly.