A series of marches by a right-wing group has been banned amid fears of violence on the streets.
Policing minister Damian Green agreed to the Metropolitan Police request for the ban to stop serious public disorder ahead of marches by the English Defence League in Waltham Forest, north-east London, and three surrounding boroughs.
"Having carefully considered the legal tests and balanced rights to protest against the need to ensure local communities and property are protected, I have given my consent to a ban on all marches in Waltham Forest and three nearby boroughs for a 30-day period," Mr Green said.
"I know the Metropolitan Police are committed to using their powers to ensure communities and properties are protected."
The Metropolitan Police wrote to Home Secretary Theresa May asking for the ban two days ago.
Chief Superintendent Peter Terry, the force's gold commander for the march, said: "We have made this decision based on specific intelligence and information, and our message is clear - we do not want people coming into the areas to attend these events."
The three other boroughs affected are Tower Hamlets, Newham and Islington.
According to a leaked email seen by the Islington Gazette, there was concern that the Finsbury Park Mosque could be among other "targets for disorderly gathering."
Islington Councillor Paul Convery writes: “The police service has sought a banning area that includes Islington because there are concerns that locations around Finsbury Park, including the mosque [in St Thomas’s Road], may be targets for disorderly gathering.
“There is also an Arsenal home match that afternoon which will add to a potentially difficult public order situation.”
The EDL's leader Tommy Robinson has been remanded in custody until the New Year after being accused of travelling to the United States last month using another person's passport.