Britain faces a "wide-ranging, persistent and unpredictable" security danger from Iran, parliament’s Intelligence and Security Committee (ISC) warned in a report released on Thursday. The cross-party watchdog, which oversees MI5, MI6 and GCHQ, concluded that Tehran has become one of the gravest state-based threats to the United Kingdom, operating across assassination plots, espionage, cyberattacks and illicit influence operations. The committee documented at least 15 attempts to kill or kidnap individuals on UK soil since the start of 2022, mainly targeting Iranian dissidents as well as Jewish and Israeli interests. MI5 has separately counted 20 Iran-linked kidnap or murder plots over the same period. The ISC said the scale of danger now matches that posed by Russia, noting Iran’s "high appetite for risk" and use of criminal proxies to obscure its role. Lawmakers criticised successive governments for focusing narrowly on Iran’s nuclear programme while "fire-fighting" more immediate domestic threats. They urged ministers to examine whether Iran’s Islamic Revolutionary Guard Corps should be proscribed as a terrorist organisation and to warn Tehran that any future plots would be treated as direct attacks on the United Kingdom. Iran’s embassy in London dismissed the findings as "biased, political and unfounded," insisting Tehran neither conducts nor supports violent actions on British soil. The ISC’s report nevertheless calls for a more comprehensive strategy, arguing that the UK’s current approach leaves it ill-prepared to counter an adversary it describes as well-resourced, adaptable and increasingly bold.