A celebrity is waiting to hear whether judges will lift an injunction barring tabloid newspaper editors from naming him in a story.
The Sun On Sunday wants to publish an account of the man's alleged extra-marital activities.
But earlier this year two Court of Appeal judges imposed an injunction - preventing the newspaper from identifying the man in an article - after he took legal action.
Lawyers for News Group Newspapers, publishers of The Sun On Sunday, have asked three appeal judges to lift the ban.
Lord Justice Jackson, Lady Justice King and Lord Justice Simon are listed to rule on the newspaper's application on Monday after analysing evidence at a Court of Appeal hearing in London on Friday.
Sun On Sunday editors say the ban should go because the man - a showbusiness celebrity and public figure - has been named in articles abroad and his identity could be found on the internet.
The man opposed the application and said the ban should stay in place.
Detail of The Sun On Sunday case emerged in a ruling by two judges in March following a Court of Appeal hearing in January.
Appeal judges Lord Justice Jackson and Lady Justice King did not identify the man in that ruling but referred to him only as PJS.
They said he was well known, married and in the entertainment business. They said his spouse - referred to as YMA - was also well-known in the entertainment business. They said the couple had young children.
Lord Justice Jackson said the man had appealed after a High Court judge ruled in favour of The Sun On Sunday.
Mr Justice Cranston refused to impose an injunction following a hearing in January - although he ordered a temporary block on publication pending the hearing of an appeal.
Lord Justice Jackson said he and Lady Justice King decided to allow the man's appeal after balancing the man's human right to respect for family life and the newspaper's right to free expression.