THE publisher of The Sun has agreed to search for documents that may relate to allegations it invented a “fake security threat” to justify the wiping of “millions of incriminating emails”, the High Court has been told.

According to court documents, News Group Newspapers (NGN) faces accusations it created a “false narrative” that a Labour peer conspired with ex-prime minster Gordon Brown to obtain stolen data as part of a bid to conceal wrong-doing and “subvert” police investigations into the phone-hacking scandal.

The claim about the mass deletion of emails features in legal action brought against NGN by the Duke of Sussex and others over allegations they were targeted by unlawful information gathering.

NGN denies that the 2011 security threat over the suspected theft of then chief executive Rebekah Brooks’s emails was devised as part of a “cover-up”.

READ MORE: Labour government scraps Winter Fuel Payment for millions

The company, which also published the now-defunct News Of The World, has previously denied unlawful activity took place at The Sun.

On Friday, a judge was told that the publisher had agreed to make searches for potentially relevant material linked to Will Lewis, a former News International general manager and current publisher of the Washington Post; James Murdoch, son of media mogul Rupert Murdoch; and others.

It came amid a preliminary hearing in London over claims brought by former Labour deputy leader Lord Tom Watson and ex-Liberal Democrat Business Secretary Vince Cable.

Both former ministers, who attended the hearing, allege NGN targeted them through voicemail interception and the use of private investigators.

In Ex-MP Cable’s claim, the publisher is accused of unlawfully obtaining covert recordings of his constituency surgery in 2010 where he said he had “declared war on Murdoch”.

Cable alleges that the recordings, obtained by a Daily Telegraph “sting”, were leaked to the BBC by Lewis, documents said.

The BBC’s report of the comments led to ex-prime minister David Cameron stripping Cable of responsibility for adjudicating on NGN parent company News Corp’s bid for full ownership of broadcaster BSkyB.

Lawyers for Lord Watson and Cable asked Justice Fancourt to order NGN to conduct further searches of material that may disclose evidence relevant to their cases.

NGN opposed some of the disclosure search bids as “disproportionate” and an “expensive and time-consuming” process, while agreeing to some searches.

David Sherborne, for Lord Watson and Cable, said in written arguments that the former was a target for unlawful activities due to his role on the parliamentary Culture, Media and Sport Select Committee which was investigating “media malpractice”.

The barrister said Lord Watson was “falsely cited by senior NGN executives, such as Rebekah Brooks and Will Lewis as part of the ‘fake security threat’ used to ‘justify’ the wiping of the crucial back-up tapes of NGN’s email system, that led to the deletion of millions of incriminating emails”.

He said NGN should look for material in relation to a claim that “there had been a suspected theft of Rebekah Brooks’ emails, these were offered or provided to the claimant, he had been handling stolen data, and was working in a conspiracy with Gordon Brown to obtain such data”.

READ MORE: Wes Streeting vows to 'go further' than Tony Blair to use private sector in NHS

“This was then used as a facade to engage in the destruction of emails on an enormous scale,” Sherborne said.

The barrister said Cable's claims that NGN targeted him and colleagues in Government with unlawful information gathering during News Corp’s bid to buy shares in BSkyB.

“News Corp was desperate to avoid intervention by the Government or the official regulator,” Sherborne said.

According to Cable’s written case pleadings, NGN unlawfully obtained recordings of his “private conversations” through “improper payments or inducements” to a Daily Telegraph IT department employee “and/or by other unlawful means” by Lewis.

When giving evidence to the Leveson Inquiry in 2012, Lewis declined to answer whether he leaked Cable’s comments to the former BBC journalist Robert Peston, citing the need to protect sources.

Anthony Hudson KC, for NGN, said there had already been “vast” disclosure in the legal action.

The barrister said some wider searches for material were “disproportionate” when Cable and Lord Watson’s claims were valued at less than £100,000, with both men incurring legal costs higher than this in their disclosure bids.

In written arguments, Hudson said the “threat” to Brook’s data was “believed to be genuine”.

He added: “NGN received information on two occasions that there was a direct threat that a current or former employee was actively trying to sell data belonging to NGN.

“It was against this background that NGN decided that multiple copies of confidential data should not be held in various systems, which would increase the risk of loss of data.”

Justice Fancourt made rulings over certain disclosure bids.

The hearing is due to continue on Friday to cover remaining applications brought by Cable, including in relation to the covert recordings issue.

Meanwhile, SNP complaints about a “misleading" BBC headline have been dismissed. 

The broadcaster was accused of letting “truth take a back seat to convenience” after Kevin Stewart (above), the MSP for Aberdeen Central and a former transport minister, wrote to BBC director-general Tim Davie raising concerns about an article on the two-child benefit cap that appeared on the BBC on July 15.

The BBC article had been headlined: “SNP join push to scrap two-child benefit cap.”

Its first paragraph then reported: “The SNP has announced plans to join Labour rebels in trying to force the government to scrap the two-child benefit cap.”

Various SNP figures took issue with the headline, leading to Stewart raising his concerns directly, writing in a letter: “SNP plans to table an amendment to the King’s Speech to remove the cap are clearly a continuation of the SNP’s seven-year fight against this horrific policy.

“I fail to understand how this latest move can in any way be described as ‘joining’ the push to scrap the two-child benefit cap, when it is the SNP that have been spearheading that push all along. To suggest otherwise, as this headline does, is simply misleading.”

Responding to the letter in Davie’s stead, BBC executive news editor of politics Hilary O’Neill dismissed the concerns as this particular story “focused on the challenge to the new Labour government over the policy”.

Stewart was unimpressed by the response, saying that “many people see a headline and don’t bother to read the article, so it’s imperative that they are accurate, since this may be all a person takes in about the story.”