Colour footage of Tower Bridge with busy river traffic below.
Long shot of the tugs on the river Thames in London. Zoom back to show the Tower Bridge. Small boat moves across the Thames from the docks area with many dock buildings and cranes in background. Various shots as the boat moves under the Tower Bridge. Various shots of different types of boats moving under Tower Bridge. Helicopter flies over the Bridge. Swans in the river. Long shot of the Bridge being lifted and then lowered back into position. Double decker bus on the Bridge.