BBC box leaves Greenock

The BBC is charting the growth in world trade with a specially marked cargo container, which will criss-cross the globe over the next year.

It has been loaded with a consignment of Scotch whisky and placed on a container ship at the port of Greenock near Glasgow which is bound for China.

Billions of pounds of imports and exports pass through the port each year. The BBC's Hugh Pym looks at how the port is handling the rise in containers.