MI5 raises terror threat alert due to increased minors under investigation, escalating threats from ISIS, Al-Qaeda, Russia, and Iran.

MI5 Director General Ken McCallum has raised alarms about rising threats from ISIS, Al-Qaeda, and hostile states like Russia and Iran. He noted a threefold increase in minors under investigation for terrorism, now 13% of cases. Since 2017, MI5 has disrupted 43 late-stage plots, including 20 linked to Iran since early 2022. The UK's current terror threat level is "substantial," indicating an attack is likely as threats become increasingly complex.