The United Kingdom has raised its national terrorism threat level from “substantial” to “severe” following a suspected terror attack in London, signaling that another attack is now considered “highly likely,” officials confirmed Thursday.
The decision comes a day after two Jewish men were stabbed in the Golders Green area of north London in what police have formally declared a terrorist incident. The victims, aged 34 and 76, were hospitalized, while a 45-year-old suspect was arrested at the scene.
The upgraded alert level reflects an escalation in the perceived risk of further attacks across the country. Under the UK’s threat classification system, a “severe” level indicates that an attack is highly likely in the near term, based on intelligence assessments by security agencies.
Interior and security officials said the move was taken after reviewing the latest intelligence and recent incidents targeting Jewish communities. Authorities have pointed to a broader pattern of rising antisemitic attacks in London in recent weeks, adding to concerns over national security.
Prime Minister Keir Starmer condemned the stabbing as “appalling” and called for a “swift, agile and visible” response from law enforcement and the government. He also announced increased police deployment and additional funding to strengthen security around Jewish institutions, including synagogues and schools.
Officials confirmed that emergency meetings were convened to assess the situation, while counter-terrorism police continue to investigate the motive and any possible links to extremist networks.
The incident is part of a wider series of attacks and threats reported in London since March, many of which have targeted Jewish individuals and community sites. Security agencies have warned that the evolving threat environment, combined with international tensions, may be contributing to increased risks domestically.
Despite the heightened alert, authorities have urged the public to remain vigilant but not alarmed. The threat level system does not predict a specific attack but reflects an overall assessment of risk, which can change based on new intelligence.
As investigations continue, the government has reiterated its commitment to tackling extremism and ensuring public safety, while community leaders have called for stronger action to address rising hate crimes and prevent further violence.