"The digital revolution has opened many new and inexpensive methods of distribution. But it has not made content free. Accordingly, we intend to charge for all our news websites," said Mr Murdoch.

The firm has suffered from plunging advertising revenues. New Corp's $3.4bn loss was due to $8.9bn in write-downs already announced, compared with a $5.4bn profit a year earlier. Revenues at the media giant, which owns BSkyB and 20th Century Fox, fell 7.8%. In the fourth quarter, News Corp lost $203m compared with a net profit of $1.1bn in the same period a year ago.