Wendi Deng is perhaps best known in Britain for defending husband Rupert during a physical attack at a parliamentary hearing in 2011.
The Chinese-born businesswoman was seen landing a slap on the face of activist Johnnie Marbles, who had attempted to throw a foam pie at Mr Murdoch.
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Uplifting messages greeted commuters on the London Underground a day after the terror attack in Westminster.
Faith leaders from across London say religious communities will "stand together" in the wake of the Westminster terror attack.
Pc Keith Palmer was among the three people killed yesterday in the Westminster terror attack.