This was to promote the Netflix series Marvel's Jessica Jones in which David played the main villain Kilgrave which was going to be released worldwide four days later.
During the 30 minute interview David spoke about his character, describing Kilgrave as "not a traditional world dominating villain" in the way he uses his mind control power.
David Tennant also spoke about Doctor Who and how important it had been in his life. A clip from his very first acting role in the anti smoking ad was also shown.
Apologies if this video does not play in your country.