Mayor of London Boris Johnson has said Lord Justice Leveson's imminent report on the future of press regulation should be taken "very seriously".
He told Murnaghan: "The present system has obviously failed and it doesn't carry confidence with the public at large."
He added that he did not want politicians influencing the media's agenda.
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A fine day across the UK - with Scotland and Northern Ireland also getting a look in on the sunshine.
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The 21-year-old was killed and a 30-year-old British man is fighting for his life after allegedly being stabbed by a French tourist.