The Young Lions was a 2015 Big Finish Short Trips audio short story read by Stephen Critchlow. It featured the Eighth Doctor and Lucie Miller. It was released as a subscriber-only download, available to subscribers who purchased The Seeds of War.
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- Lucie notices that 2005 is "pre-smoking ban".
- In the real world, the ban on smoking in public buildings came into force in July 2007. This would contradict AUDIO: Blood of the Daleks and Human Resources where Lucie's native time is stated to be 2006.