Page last updated at 18:27 GMT, Thursday, 7 October 2010 19:27 UK

Ai Weiwei on how art became an escape for him

Next week Tate Modern will unveil its latest Turbine Hall commission and this year it is the turn of China's most famous artist Ai Weiwei to fill the cavernous space.

He gave the BBC's Arts Editor Will Gompertz an exclusive interview prior to the unveiling.

Broadcast on 8 October 2010.

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