Prince Harry feels like his teenage years were taken away from him.

The Duke of Sussex traveled back to the United Kingdom to be present for a trial against Associated Newspapers Limited or ANL.

Harry was joined by Sir Elton John, John's partner David Furnish, Sadie Frost and Doreen Baroness Lawrence in London's High Court on Monday.

According to court documents obtained by The Independent, Harry felt "largely deprived" of his youth due to ANL, the publisher behind the Daily Mail.

Prince Harry

Prince Harry arrived at the Royal Courts Of Justice, central London, ahead of a hearing claim over allegations of unlawful information gathering brought against Associated Newspapers Limited. (Jordan Pettitt/PA Images)

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Barrister David Sherbone said on Harry's behalf that he is "troubled that, through Associated’s unlawful acts, he was largely deprived of important aspects of his teenage years."

Prince Harry High Court

Prince Harry said he was "largely deprived" of his teenage years due to interference from ANL. (Karwai Tang/WireImage)

Sherbone continued, "In particular, suspicion and paranoia was caused by Associated’s publication of the unlawful articles: friends were lost or cut off as a result and everyone became a ‘suspect’ since he was misled by the way that the articles were written into believing that those close to him were the source of this information being provided to Associated’s newspapers. 

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"The claimant regards Associated’s unlawful acts to amount to a major betrayal given promises made by the media to improve its conduct following the tragic and untimely death of his mother, Princess Diana, in 1997," he concluded.

Prince Harry thumbs up

Prince Harry gives a thumbs up outside the Royal Courts of Justice on March 27, 2023 in London, England. (Photo by Dan Kitwood)

This is just one of several lawsuits that Harry has brought against the British media.

He's also suing Associated Newspapers for defamation over an article from Mail on Sunday that was titled "Exclusive: How Prince Harry tried to keep his legal fight with the government over police bodyguards a secret… then – just minutes after the story broke – his PR machine tried to put a positive spin on the dispute."

Prince Harry claimed Mail on Sunday's implication that the Duke of Sussex lied in his initial statements regarding the security lawsuit libeled him.

ANL considers the allegations to be "preposterous smears," per the BBC.

The individuals involved in the suit believe their privacy was taken from them by unlawful information gathering, such as phone tapping, from the publisher.

According to the BBC, ANL obtained Sir Elton John's child's birth certificate before he had even seen it and his landline at his home in Windsor was tapped.

Sir Elton John

Sir Elton John departed the Royal Courts of Justice in his role as claimant after attending a lawsuit against the Associated Newspapers on March 27, 2023 in London, England. (Photo by Karwai Tang/WireImage)

"They are also mortified to consider all their conversations, some of which were very personal indeed, were tapped, taped, packaged and consumed as a commercial product for journalists and unknown others to pick over, regardless of whether or not they were published," Sherbone said, per The Independent.

He added, "They were heartbroken by the derogatory headline that Associated attached to it, clearly calculated to profit and generate public sensation about an event that they had so carefully guarded to keep precious."

David Furnish

Elton John's partner, David Furnish, was also in High Court on Monday.  (Photo by Leon Neal)

The four-day hearing, which began Monday morning, is a preliminary hearing where a judge will decide if the case will go to trial. 

According to the outlets, ANL does not want the case to go to trial. 

Sherbone also spoke on behalf of Lawrence who he claimed felt "anger, shock and upset" by being the focal point of The Mail in 1993.

Lawrence is the mother of Stephen Lawrence who was murdered in a racist attack while waiting at a bus stop in London.

Sadie Frost

Sadie Frost attended the lawsuit against the Associated Newspapers on Monday. (Photo by Karwai Tang/WireImage)

According to court documents obtained by The Independent, Sharbone advocated that Lawrence "never once suspected Associated" of any wrongdoing because of her "trust in the paper."

Lawrence "now sees that the Daily Mail’s true interests were about self-promotion and using her and her son’s murder as a means to generate ‘exclusive’ headlines, sell newspapers, and to profit."

She says the publishing company illegally monitored her bank account and intercepted her voicemail. The ANL also allegedly issued "corrupt payments to serving Metropolitan Police Service police officers, including on the Stephen Lawrence murder investigations, for confidential information."

Baroness Lawrence

Doreen Lawrence, Baroness Lawrence of Clarendon was in High Court on Monday. (Photo by Karwai Tang/WireImage)

Adrian Beltrami KC, a lawyer for ANL, says the allegations are "too late" and the claims are "largely inferential."

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"Those claims, which relate to matters said to have taken place as early as 1993, and for the most part in the first decade of this century, are undeniably prima facie time-barred," Beltrami said.

Following the first day of the preliminary hearing, a spokesperson for ANL told The Independent, "While the Mail’s admiration for Baroness Lawrence remains undimmed, we are profoundly saddened that she has been persuaded to bring this case.

Stephen Lawrence

This handout image provided by the Metropolitan Police shows Stephen Lawrence. (Photo by Metropolitan Police)

"The Mail remains hugely proud of its pivotal role in campaigning for justice for Stephen Lawrence. Its famous ‘Murderers’ front page triggered the Macpherson report.

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"Associated Newspapers, which owns the Daily Mail and Mail on Sunday, vigorously denies all the claims against it," the statement concluded.