Abstract: The British Jewish community has faced an unprecedented number of attacks in recent weeks, including multiple arson incidents and a terrorist attack. As the UK government grapples with how to respond, this ISD policy brief offers a strategic framework for confronting a range of antisemitic threats. These threats encompass mainstream and extreme actors, state- and non-state-linked activity, online and offline environments, and both violence and latent cultural antisemitism. It urges a cross-government strategy, led by the UK Prime Minister’s Office, centred on the online environment and designed to address the diverse actors, tactics and harms targeting the Jewish community. This brief builds on ISD’s research and policy development on the diverse harms landscape, covering threats such as terrorism, extremism, hostile state activity and targeted hate including antisemitism.