Trinity Mirror, which publishes tabloid newspaper the Daily Mirror, has raised the amount of money it has set aside to settle claims from individuals of phone hacking after the newspaper published an apology today.
The firm said the provision would be raised by £8m to £12m when it publishes 2014 results on March 2.
"Inevitably there remains some uncertainty as to how matters will progress and whether or not new allegations or claims will emerge and their possible financial impact," it said.
The UK newspaper industry was rocked in 2011 by the closure of Rupert Murdoch's best-selling News of the World.
This comes after revelations that some staff had regularly hacked into phone message recording services to generate scoops.
In April, Trinity Mirror admitted liability to four individuals who had sued its MGN unit for alleged interception of their voicemails, and said it would pay compensation, without detailing how much.
The firm said it was continuing to co-operate with the Metropolitan Police Service in their investigations into phone hacking.
Trinity Mirror today published an open apology to the victims of phone hacking in the Daily Mirror and plans to publish the same apology in the Sunday Mirror and Sunday People.
The firm also forecast adjusted profits and earnings per share for the year to December 28 2014 would be marginally ahead of consensus forecasts. Net debt was forecast to be below £20m.
