Back in the 60s, archive space at the BBC was hard to come by, forcing the broadcaster to delete some of its own material.

Now, a TV show that fell victim to this regime has been resurrected, with the BBC using a pirate recording of the shows audio to bring it back to life.

Link:
http://torrentfreak.com/bbc-relies-on-pirate-audio-to-bring-back-lost-tv-show-081214/