MI5 Director General Sir Ken McCallum says Britain faces greater danger now than it did on 9/11, in a piece marking the 25th anniversary of the attacks. He argues the UK is dealing with a combination of terrorism risks and intensifying state threats.

McCallum frames the current security landscape as a “worst of both worlds” scenario. According to the reporting, he highlights Russia and China as posing growing challenges alongside ongoing concerns about extremist violence. The articles emphasize that, while the threat environment remains serious, it has evolved since 2001.

Across the sources, the core message is consistent: McCallum presents a comparison between today’s risk and the post-9/11 period, stressing that the UK’s security picture involves multiple, overlapping threats rather than one dominant danger.