Iran's foreign ministry said it handed the ambassador a protest note rejecting what it called "groundless and false" British statements that Tehran had sought to carry out security-related activities in the United Kingdom.
Britain summoned Iran's chargé d'affaires on Tuesday after George Stana and Nandito Badea were sentenced to 12 years and eight years in prison, respectively, for their role in the 2024 attack on Pouria Zeraati, an Iranian-British journalist who works for Iran International.
Zeraati was stabbed three times in the leg near his home in southwest London in March 2024.
British prosecutors said the two Romanian nationals were acting as proxies for the Iranian government. They had pleaded not guilty to wounding with intent but were convicted at London's Woolwich Crown Court.
Judge links attack to Iranian state
The British Foreign Office said the judge had concluded that the attack was carried out "in the interests of, and on behalf of, the Iranian state."
According to a police statement, the judge ruled that the "foreign power condition" under Britain's National Security Act was met in Stana's case because of "extensive planning and his lengthy involvement in the plot", indicating that he knew, or at least should have known, of the connection to the Iranian state.
The police statement said the condition was not met in Badea's case because he was not aware of the Iran connection as the reason for the attack.
Tehran rejects British move
Iran's foreign ministry rejected Britain's statements as "groundless and false" and said they amounted to an attempt to divert attention from Britain's own conduct.
Britain's Foreign Office said the case followed "a longstanding pattern of hostile activity by the Iranian intelligence services on UK soil" and said Iran must stop such activity immediately. Iran's embassy in London has rejected what it called "unfounded, politically motivated and hostile allegations."
Iran's foreign ministry also called on Britain to stop hosting media outlets that Tehran said were "funded and directed by the Israeli regime." It said Britain should end such activity "as soon as possible."