The Associate Editor of The Sun Trevor Kavanagh has accused politicians of taking the press to the "brink of political control", a move he claims is a "bridge too far".
The final decision to reject the newspaper industry's plans for regulation is expected to be announced by Culture Secretary Maria Miller in the Commons later today.
Mr Kavanagh insisted three centuries of press freedom needed to be protected, before suggesting that a future government may decide the press is too free and enforce further restrictions and regulation.
Commenting on reports ministers have rejected plans drawn up by the newspaper industry for press regulation, Trevor Kavanagh, the associate editor of the Sun, told Newsnight it is not a shock.
He added: "It's what we'd been given fairly clear clues would happen. I think it has to be seen as a great victory for the forces of oppression of a free press - Hacked Off in particular - and the politicians who went along for the ride."
The Irish Sun has dropped its topless page three pin-ups, saying it "caters for a different audience" to the UK edition which is keeping the long-running feature.
The paper's editor Paul Clarkson said: "The Irish Sun shares the same qualities and personality that make the paper great everywhere: entertaining and engaging journalism, quality sports writing and showbiz coverage.
"But it also caters for a different audience in Ireland and we always strive to reflect our cultural differences here."
Britain's biggest selling newspaper, The Sun, has begun charging users of its website £2 a week to access content.
The Sun+ site was relaunched overnight with a one month £1 trial membership offer. Benefits are said to include "access to exclusive breaking news" and live football match feeds.
According to a statement, digital users will "get exclusive access to our website, as well as our tablet and smartphone apps, two great ways to read The Sun on the go".
The new editor of The Sun has said that Page 3 is will remain in the paper.
David Dinsmore has come under increasing pressure recently from campaigners to stop printing topless pictures in the newspaper.
Speaking on LBC he said that a new exhibition at the British Museum was "far more explicit."
Mr Dinsmore said: "This is Japanese art - Spring Pictures as it's euphemistically called. It's given the editor of the Times the opportunity to put a naked Japanese lady on page 3, which as we know is a good way of selling newspapers."
When challenged on whether page 3 is safe he added: "It is, it is, yes I can tell you that.
"This stuff at the British Museum is far more explicit and raunchy."
David Dinsmore has been unveiled as the new editor of The Sun newspaper.
Mr Dinsmore will take over the role from Dominic Mohan, who is leaving to "take up a senior role advising the chief executive officer of new News Corp", News International said.
The new Sun editor will take up his position on Monday.
Mr Dinsmore said: "I relish the opportunity to build on the historic strengths of The Sun, and harness new digital opportunities to offer our loyal readers more than ever".
Mr Mohan, who has been at the newspaper 17 years, said he was "confident The Sun will go from strength to strength".
David Cameron has rejected a request for the Sun newspaper to be banned from Westminster.
Speaking at Prime Minister's Questions, Green Party MP Caroline Lucas had demanded that the tabloid should "stop being available on the parliamentary estate until page 3 is scrapped."
The MP was rebuked in parliament last week after she wore a pink T-shirt that read "No More Page 3" which was deemed to be "not in line with regulations."
A former police sergeant is facing jail after admitting selling information to The Sun newspaper.
James Bowes, 30, from Steyning, West Sussex, pleaded guilty at the Old Bailey today to misconduct in a public office in 2010.
He was remanded on unconditional bail to be sentenced on 9th May.
Mr Justice Fulford warned him that the fact he had been given bail was "no indication of disposal".
No details of the case were given during the short hearing.
Bowes is said to have passed on information of investigations to the tabloid between 9th April and 20th July 2010 while working for Sussex Police.
The managing editor of The Sun, Richard Caseby, has launched a stinging attack on the government-sponsored Royal Charter, accusing it of being "draconian" and "bodged together".
An earlier deal for state regulation was bodged together by politicians and the pressure group Hacked Off at a secret late night meeting. The Prime Minister was asleep in his bed at the time.
This was not the independent, self regulation recommended by the Leveson Inquiry. It was rushed; it was draconian; it was it was a mess; and it is being condemned by commentators the world over.
It meant that the state would ultimately have the final say in what newspapers write, and it went further.
It basically blackmailed publishers into joining up because it threatened them with punitive damaged which could easily put them out of business.
The Girlguiding movement, which counts over half a million members, have signed a petition calling on The Sun newspaper to stop the use of page 3 topless models.
In a poll of its members, who are aged 16 to 25, 88% called on Sun editor Dominic Mohan "to finally take bare boobs out of The Sun".
Julie Bentley, chief executive of Girlguiding, said: “We are very proud that young women in Guiding are choosing to speak out and play a part in building the society they want to live in.”