But there are just so many jihadis for British authorities to keep track of. This one said: “I’m ready to do whatever I need to do in the name of Allah. I am ready in the name of Allah to do what needs to be done, including killing my own mother.”

Charming guy. And there are so many of them in Britain today. The beauty of multiculturalism!

“Police were warned about suspect two years ago,” by Lisa O’Carroll, in “London attack: Islamic State claims responsibility – live updates,” by Chris Johnston, Jamie Grierson, Nadia Khomami, Andrew Sparrow and Claire Phipps, Guardian, June 4, 2017 (thanks to Kamala):