Does anyone know the real situation? My theory is that he has a superinjunction out. Not just a normal injunction that can be reported by the press. My guess (as is everyone else's) that he has his children with his ex-wife and at least a couple with other women.
Let me be clear, I do not care about Boris Johnson's children (otherthan they are safe and happy), in the same way I do not care about Jeremy Corbyn's children. (Does he have any?) Note the press only ask Johnson about the number of his kids. It suggests that they know something that can't be reported.
I do care about a prime minister who uses injunctions. This is a form of censorship that is not available to the average citizen and can be used by companies covering up stuff. They aren't just a legal tool for footballers to hide their affairs. It is extremely worrying if we have a PM who actively uses them himself, especially with Brexit coming up and potential deregulation around environmental, food, safety and working laws.
See this link: www.telegraph.co.uk/news/uknews/law-and-order/8394566/Hyper-injunction-stops-you-talking-to-MP.html
BTW not completely relevant, but I believe the fact Boris Johnson had unpaid parking tickets building up in his car prior to being becoming PM was a sign that he believes rules are only for the plebs and not him.