Excerpt:
Scotland Yard was today urged to launch a fresh crackdown on extremist preachers and stop their "right to protest" being put before the interests of ordinary Londoners.
In a letter to Met Commissioner Sir Bernard Hogan-Howe, seen by the Standard, he is urged to beef up the force's response to disruptive rallies led by extremists and "prevent these demonstrations happening in the first place".
It comes after firebrand cleric Anjem Choudary led a rally outside the gates of Regent's Park Mosque to promote his "Stay Muslim, Don't Vote" campaign.