A 22-year-old man has been arrested on suspicion of fatally shooting conservative activist Charlie Kirk in Utah, British newspaper front pages reported Sunday, as diplomatic and commercial arrangements between the United States and the United Kingdom continue ahead of President Donald Trump's state visit to London.

Tyler Robinson was detained after reports that his father contacted authorities. British tabloids quoted accounts that Robinson's father, described variously as anguished or a police officer, turned his son in after a confession. Neighbours told one paper Robinson came from a "good God-fearing family." Reports also said engravings were found on a rifle believed to have been used in the shooting, including the words "Hey, fascist, catch!" The suspect could face the death penalty if convicted, and President Trump said the accused "deserves" capital punishment.

The coverage of the arrest dominated several front pages, which also carried disparate domestic political stories from Britain. Separately, UK media reported that Downing Street was notified about emails involving Lord Peter Mandelson and the late financier Jeffrey Epstein two days before Mandelson was removed as Britain's ambassador to the United States. The revelation has drawn criticism of Whitehall's handling of the matter and leaves the ambassadorial post vacant on the eve of Mr Trump's visit.

Despite that controversy, officials on both sides have been described as racing to finalise commercial deals tied to the state visit. The Financial Times reported discussions to advance agreements on nuclear reactors, artificial-intelligence data centres and whisky exports. OpenAI is reported to plan an announcement about a British arm of its $500 billion Stargate data centre project during the visit; the company’s chief executive, Sam Altman, and Nvidia's chief executive Jensen Huang are expected to accompany the president.

Newspaper pages covering domestic and diplomatic topics ahead of the visit

British political coverage also highlighted internal pressure on Prime Minister Sir Keir Starmer, with some papers quoting MPs warning that time was running out to reverse a perceived faltering premiership ahead of local elections. Other stories ranged from rent disputes involving a Labour donor to high-profile personal news from British media figures.

US officials and law-enforcement authorities have not yet completed publicly available court filings or charging statements related to the Utah shooting, and prosecutors will determine what charges to bring. UK reporting drew largely on front-page coverage in national newspapers and named political sources; further developments in both the homicide investigation and diplomatic negotiations are expected as the state visit approaches.