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UK Prime Minister Andy Burnham told Parliament that Iran's Revolutionary Guard Corps was 'almost certainly' behind a suspected plot targeting RAF Fairford, a US-used airbase, prompting Britain to summon Iran's ambassador and announce further sanctions against Tehran and the IRGC. Iran denounced the allegations as a 'false flag' operation and threatened to reconsider diplomatic relations with the UK. MI5 chief Ken McCallum's annual threat assessment separately flagged Iran, alongside Russia, as an increasingly serious state-based threat capable of violent plots on British soil, adding to debate over how significant Tehran's capabilities to strike inside the UK really are. The episode comes as a man accused of plotting an attack on Iran International journalists in Britain told police he was paid £2,000 to film the target, according to court testimony, underscoring a pattern of alleged Iranian-linked intimidation efforts in the UK. Separately, Iran's Quds Force renamed its overseas assassination unit 'Unit 600' and appointed a new commander after its structure was exposed, reinforcing Western concerns about Tehran's covert operations abroad.