This is reported by The Sunday Times referring to the local police.
According to a senior official of the counterterrorism unit of Scotland Yard, the security forces intensified surveillance of the new "active" groups of suspects.
Thus, extremists are probably followers of the ideas of the terrorist groups "Islamic State" and Al Qaeda. However, they are not connected with the suspects who were detained last week in London.
Recall, as previously reported, "URA-Inform, in northern London in Finsbury Park on Wednesday, April 19, an explosion. As a result of the incident, two people were injured.