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Who's Watching You? Episode 1 preview

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In a three part series Richard Bilton explores the hidden world of surveillance.

He investigates why increasingly we are all being watched and why some think we have already become a surveillance society.

For more information about surveillance visit the Who's Watching You website.

The three part series Who's Watching You begins on Monday 25 May, 2009 at 2100 BST on BBC Two. Or catch up on iPlayer afterwards.

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