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The head of MI5, Sir Ken McCallum, warned in a rare public appearance that artificial intelligence is supercharging the terror threat, including the possibility terrorists could use it to create biological weapons or develop drone technology. He named Russia as the number one aggressor and said MI5 was devoting more resources to state threats than during the Cold War, with Russia, Iran and China linked to hybrid attacks, and said a new AI Threat Assessment Centre had been set up. The Vatican said Pope Leo had surgery to remove a cancerous lump from his right lung and was expected to remain in hospital in Rome for about a week; doctors removed the entire lower lobe and the operation was described as successful. William Chapman, a man thought to be in his early twenties, was named as the person killed by a tiger at a Yorkshire wildlife park after he climbed into its enclosure; he had filmed himself entering and the park remained closed as a health and safety investigation began.

A report by the Independent Football Regulator found most clubs in England were living on the edge of financial disaster, with 94% of clubs in the top five leagues making a loss last season and more than 60% of EFL and national league clubs technically insolvent; the regulator said 32 clubs had only 30 days' cash and its head said he would resign if there was political interference over Manchester City's future. In Ukraine, explosions hit Kyiv after a ballistic missile attack that President Zelensky said struck a critical energy facility and a residential building, and he said there was no advanced warning from allies for a second night. The IMF said the UK economy would grow more this year than previously expected but warned British consumers faced a sharper rise in inflation, while its forecasts also noted global pressures from energy costs, trade conflict and the AI tech boom. The government said it would tighten rules on home heating oil after prices almost doubled in a year, with Ofgem expected to regulate the market and introduce a tighter code of conduct and smaller top-ups, though no price cap was discussed.

Medical staff wrote to the government warning that hundreds of thousands of children doing almost all school lessons on screens was leading to a crisis in developmental health, with short-sightedness more than doubled since the 1960s and more than two million children struggling with speech and language. The family of William Chapman said they were devastated and described him as a bright and engaging young man who had suffered significant mental illness and was on strong medication, adding that circulation of footage online was deeply offensive and causing severe distress. US officials said a Saudi employee of OpenAI had been arrested after a secret recording device was found in its San Francisco office; OpenAI said there was no evidence customer data was accessed and the matter was referred to the FBI. Recordings of emergency calls in Tennessee revealed confusion after the failed execution of death row inmate Christa Pike, who survived two doses of lethal injection last month, was taken to hospital almost an hour after the first call for an ambulance and later discharged from hospital.