The Metropolitan Police wrote to Home Secretary Theresa May asking for the ban two days ago.
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.
More top news
The review will look at how the city would cope if multiple terror attacks were launched.
Eric's been performing his impressive stunts at Clissold Park and even skates the half pipe.
The unusual sight caused quite a stir on Twitter.