Synagogues and other groups sent members details of the operation on Monday amid concerns about the increase in heavily-armed officers in Golders Green, Hendon and other areas with large Jewish communities.
A video featuring Simon Rose, Barnet’s borough commander, was released last week.
In it he said: “In January, the Commissioner said London was going to get 600 extra officers. You will see some of them around Barnet.
“There’s no new intel and there’s no new threat. They are there to make Barnet a more hostile environment for terrorists to operate in.
“You may see them. If you do, please go and say hello. They are there to make Barnet safer.”