All Systems Go!

Demis Hassabis of Google DeepMind on using Artificial Intelligence to beat a champion player of the ancient board game Go. Jason Njoku of iROKOtv on investing in making Nigerian "Nollywood" films and TV. And how traditional games are getting a tech update at the London Toy Fair. Presented by Rory Cellan-Jones, with special guest Ellie Gibson, video games journalist and co-presenter of the Scummy Mummies podcast. (Picture: Demis Hassabis of Google DeepMind).