Day one of the Games sees banks of empty seats at key venues.

Lord Coe promises to "name and shame" sponsors who waste tickets.

Several high-profile venues, including the Aquatics Centre in the Olympic Park and the gymnastics arena in North Greenwich, had rows of empty seats during morning sessions on the first day of the Games.

Locog said they would be investigating why the seats were unfilled, while Lord Coe has reportedly promised to name and shame sponsors who did not find takers for the venues.