The survey of more than 1,500 adults by pollster JL Partners found that 75% of Labour voters and 65% of the wider public back a ban on the IRGC, while only 5% of Labour voters opposed it, the Telegraph reported on Sunday.
Three-quarters of Labour supporters said the group posed a threat to Britain’s national security.
The findings follow MI5 disclosures that security services and police have foiled at least 20 Iran-linked assassination and kidnap plots in Britain over the past two years.
“The British public are rightly under no illusions about the nature of the Iranian regime. It is clearer than ever that the IRGC poses a threat to the safety and security of everyone in Britain,” the Telegraph quoted Labour MP Jon Pearce as saying.
Senior Conservative figures also urged the government to act. Lord Arbuthnot, a former chair of parliament’s defense select committee, was quoted as saying: “With MI5 telling us they have foiled at least 20 state-sponsored attacks by Iran in the UK, what on earth is holding the Government back from proscribing the IRGC?”
The IRGC, a branch of Iran’s armed forces, is already under British financial sanctions, but critics argue those measures are insufficient.
The poll showed that 51% of the public believe sanctions have failed to curb the group’s activities, and 46% doubt authorities are doing enough to counter IRGC-linked operations in the UK.
As an alternative to proscription, Home Secretary Yvette Cooper has backed proposals for new legislation to give ministers powers to blacklist state agencies such as the IRGC, the newspaper said.
The poll was commissioned by the Iranian Front for the Revival of Law and National Sovereignty, founded by Vahid Beheshti, a political activist and journalist who has staged a protest for more than 900 days outside the Foreign Office.
The debate in Britain comes as other Western allies have already taken action. The United States designated the IRGC as a foreign terrorist organization in 2019, while Canada added the group to its terrorist list in 2023.