Hans Rausing, one of the richest men in Britain and heir to the Tetra Pak drinks carton empire, has been arrested in connection with his wife's death after her body was found at their home in Chelsea in west London.
Her death was being treated as unexplained.
Mr Rausing had earlier been detained by police on suspicion of possessing drugs.
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Cloudy and mild tonight with cloudy skies again for most of us tomorrow.