This is what the courts had to say about the relevance of his behaviour to his political life
“The court of appeal rejected Macintyre's bid for a privacy injunction against the newspaper, ruling that she had previously shown an "ambivalent approach to the confidentiality" of Johnson's paternity of their daughter. The judges also upheld major parts of an earlier high court ruling that referred to the politician as "philandering".
In a private six-day hearing at the high court last year, Macintyre said her daughter's paternity was "exceptionally sensitive and delicate" and that it would be "absolutely devastating" for the three-year-old to learn of her paternity in the national press.
However, it emerged that she had hinted at Johnson's identity to Nicholas Coleridge, the president of the major magazine publisher Condé Nast, in a conversation at a private house party in June 2010.
In September that year, she agreed to be interviewed by Tatler and take part in a photoshoot with the child. According to the court judgment, the mother went ahead with the interview despite receiving legal advice from her solicitor that it would be unhelpful to her privacy claims.
The three appeal court judges said: "The mother seems to have had little concern as to the effect of the magazine article on the claimant [her daughter]."
Macintyre's daughter is alleged to be the second child conceived by Johnson as a result of extramarital affairs, the court heard during hearings last year. Lawyers for the Daily Mail argued that it was in the public interest to name Johnson as the child's father because it "went to the issue of recklessness and whether on that account he was fit for public office".