Thirty years of the World Wide Web

Sir Tim Berners-Lee, the Web's creator, warns of a "dysfunctional future" online if action is not taken to prevent it. Plus, what impact the Web has had in Africa, and how some governments, such as those in China and Russia, don't share Sir Tim's vision of a fully-open internet. Presented by Rory Cellan-Jones, with BBC tech reporter Jane Wakefield.

(Image: Sir Tim Berners-Lee attends event celebrating the 30th Birthday of The World Wide Web hosted by the Science Museum, London. Credit: Eamonn M. McCormack/ Getty Images)