London attacker 'cautioned by police over extremist behaviour'
Security services let ringleader slip through net despite links to known Islamist group
Security services let ringleader slip through net despite links to known Islamist group
Jurors at the Old Bailey have found Choudary guilty of supporting Islamic State
'The police do not have the capability to remove any material from any platform'
He and Mohammed Mizanur Rahman were convicted over lectures posted on YouTube