LISTEN
Including Yesterday in Parliament, Sports Desk and Thought for the Day.
Series examining the role of state secrecy in Britain
Naomi Grimley asks if the modern media can keep national security secrets.
Peter Hennessy, the leading Whitehall watcher, looks at government secrecy.
Part of the Secret Britain series. Peter Taylor meets people who have kept state secrets.
Tue 30 Aug 2011 21:30 BBC Radio 4
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