Five teenagers have made it through to the semi-finals of the contest, but only one of them can become The Speaker.

The teenagers face their toughest challenge yet. They are mentored in the art of inspiration by their biggest critics, the three judges - Jo Brand, John Amaechi and Jeremy Stockwell.

The Speakers gather at City Hall in London where they will be challenged to speak to the entire nation; their speeches will be beamed to big screens in major cities all over the country. Show less