From Episode 3, helping the finalists learn and rise to the weekly challenges is a group of guest Mentors who offer expert tutelage and inspiration to draw on.
The four guest Mentors are:
Queen of the Dragons' Den, Deborah Meaden, coaches the Speakers on how to speak with Conviction.
Lord Spencer invites the Speakers to Althorp House where they explore the craft of Information giving.
Journalist and broadcaster Kate Silverton teaches the Speakers the skills of Storytelling
Tony Blair's former Director of Communications and Speech Writer Alastair Campbell, demonstrates the subtleties of Persuasion.
We asked Alastair Campbell, Lord Spencer and Kate Silverton - as well as Judges John, Jo and Jeremy - which speakers they like to sit back and listen to.
There are no upcoming episodes.
The Speaker series has now concluded. This site will no longer be updated.