The Liberal Democrat Deputy Leader Simon Hughes told ITV1's The Agenda that he is opposed to the statutory regulation of the press.
Lord Justice Leveson's report is published on Thursday.
The Agenda is on ITV1 at 10.35pm and at 11:35pm in Scotland.
More top news
A woman and man have been charged with murder after a baby was found unresponsive on a bus.
A "very dangerous" tattooed attacker who kidnapped a man before subjecting him to numerous assaults has been jailed for life.
The Duke and Duchess of Cambridge went salmon fishing in Canadian waters on the latest leg of their royal visit to the country.