UK terror threat raised to ‘severe’ as nearly 200,000 illegal migrants slip in | 6 May 2026 | As the United Kingdom raised its national terror threat level to “severe,” meaning an attack is considered “highly likely,” security experts are warning that Britain’s separate illegal migration crisis is adding to broader concerns over border control and vetting, with small boat crossings now nearing 200,000 arrivals since 2018. The U.K.’s Joint Terrorism Analysis Center raised the national threat level from “substantial” to “severe” last week following a stabbing attack in Golders Green in North London, warning that the broader Islamist and extreme right-wing terror threat in Britain has been increasing “for some time.” At the same time, official figures cited by GB News and The Sun show small boat arrivals across the English Channel are approaching the 200,000 mark, intensifying political debate over illegal immigration, deportations and national security.