The Times has some more details in addition to those reported in the Guardian. Just to give some more context, here are some extracts from the article:
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Sara Mansoori KC, representing the celebrity, told the court the man was “a well-known individual who suffers from very serious mental health problems”.
“He has attempted suicide twice in recent months, was involuntarily detained under the Mental Health Act for a period during the summer, and remains seriously ill,” she added.
The barrister said that ITN and The Guardian were planning to report information contained in two letters sent to the celebrity in the spring that “is likely to cause him to attempt to suicide again”.
[...]
The celebrity had chosen not to engage with the state-provided healthcare offered to treat his mental health issues after his release from hospital, the court was told.
Dr Inti Qurashi, a consultant forensic psychiatrist instructed as a joint legal expert, said the celebrity’s psychiatrist told him: “We offered [him] access to a mental health crisis team to support him and also to provide support to his girlfriend and PA. He declined.
[...]
Gavin Millar KC, representing the media organisations, said if Mr Justice Nicklin decided the court had a duty to protect the celebrity, he would have to decide what “reasonable steps” the state was required to take.
Millar said the judge would need to decide whether to “restrain publication of journalistic material” or if the duty fell on a state body such as NHS mental health services for the treatment of “individuals suffering from mental disorder who ought to be detained in the interests of their own health and safety”.
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The judge previously said: “The court must start by according very substantial weight to the principle of open justice. There is a clear presumption in its favour unless that presumption is displaced by a sufficiently powerful countervailing justification.”
The judge ordered the exclusion of an hour-long filmed interview of the celebrity, conducted by his solicitor on Tuesday, in which he challenged some of Qurashi’s findings. The judge said the interview raised issues about whether the celebrity “has been truthful at all times with his treating clinicians”.