Police will "fully assess" a recording of comments apparently made by Rupert Murdoch during a meeting with News International journalists.
Assistant Commissioner Cressida Dick confirmed the force is trying to get a copy of the clip of Mr Murdoch speaking to members of staff from the Sun in March.
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No arrests have been reported.
Sergei Skripal and police officer Nick Bailey will reportedly be compensated after their houses were contaminated in the March 4 nerve agent
Greg Clarke said the warmth of the welcome from the World Cup hosts had surprised him.