The unleashing on X (formerly Twitter) of a torrent of AI-generated images of women and children wearing bikinis, some in sexualised poses or with injuries, has rightly prompted a strong reaction from UK politicians and regulators. Monday’s announcement that X is being investigated was Ofcom’s most combative move since key provisions in the Online Safety Act came into force. None of the other businesses it has challenged or fined have anything like the global reach or political clout of Elon Musk’s social media giant. Whatever happens next, this is a defining moment. What is being defined is the extent to which some of the wealthiest companies on the planet are under democratic control.

But the announcement is only a first step. Ofcom has given no indication of how long its investigation will take. On Friday Downing Street described as insulting the decision to limit the use of the image‑making Grok........

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