English actor, comedian and television producer Sir David Jason explores his favourite Great British inventions. As a former mechanic, David has always been fascinated by how things work. In this four-part documentary series, he discovers the remarkable stories behind the nation's inventions that changed the whole world. From the tank and hovercraft to the lawn mower and television, he examines how the inventions came about and why there were thought up at that specific moment in the British history.