In one clip from a secret audio recording obtained by Channel 4 News, Rupert Murdoch is heard branding police "totally incompetent" and damning the Scotland Yard inquiry into corrupt payments to public officials.
"It's the biggest inquiry ever, over next to nothing," he says.
Hear more of the recordings at Channel 4 News.
A News Corp statement said Mr Murdoch was showing "understandable empathy" to his staff.
More top news
Hundreds of people are feared to have drowned after a boat packed with migrants sank off the coast of Libya, trapping many in the hold.
Thousands are missing out on the best cancer treatments, research has found, with 50% unaware of more advanced types of radiotherapy.
Weather experts say most of the country should brace itself for showers, with thunderstorms and some heavy rain in parts.