There seems to be a demonstration in Broadway, directly opposite the Metropolitan Police HQ at New Scotland Yard, protesting about the killing of the innocent Brazilian, Jean Charles de Menezes, who was shot by the Police last Friday aat Stockwell Tube Station.
This area is just within the Designated Area. The demonstration has both banners and a megaphone, and obviously several police officers standing by.
If this demonstration happens again, or continues after August 1st, the megaphone loudspeaker will be banned, and arbitrary conditions on the demonstration can be imposed.