Prime Minister Sir Keir Starmer has warned that Iran's attempts to destabilise British society by inciting antisemitism will not be tolerated, following a terror-declared knife attack in Golders Green on April 29. He announced enhanced security measures for the Jewish community, including an additional £1m in funding, supplementing £25m pledged last week. The government is investigating foreign state involvement and will rush new legislation to counter state-backed threats, potentially proscribing Iran's Islamic Revolutionary Guard Corps. Director of Public Prosecutions Stephen Parkinson has issued guidance to fast-track hate crime prosecutions, and an independent audit will review systems for handling antisemitism allegations. Starmer vowed a "zero tolerance" approach on university campuses and in the arts, with funding withdrawal for those promoting antisemitism.