An associate of Anjem Choudary's, Abdul Hakeem, has said that imprisoning Choudary will not prevent his message from being distributed, and may in fact strengthen the hate preacher in the eyes of his followers.
Speaking to ITV News' Security Editor Rohit Kachroo, he said: "The only issue is, who's going to fill his shoes?"
More top news
Flood warnings and alerts are in place for Scotland and northern England, while high temperatures are set to continue further south.
The state recorded 331 new cases on Tuesday.
Researchers used the method to study why flocks of long-tailed tits segregate themselves into different parts of the landscape.