aka Tomorrow's Worlds: The Unearthly History of Science Fiction?
There is currently a 60 minute two episode show called "Tomorrow's Worlds: The Unearthly History of Science Fiction" on the BBC Two iPlayer which features the same people as this show.
Is this actually the same show?
http://www.bbc.co.uk/iplayer/episode/p01yqkdq/tomorrows-worlds-the-une arthly-history-of-science-fiction-1-space