UK financial sector prepared for Mythos and others, says BoE co-chaired group

The Bank of England-led Cross Market Operational Resilience Group said the UK financial sector is prepared for risks and opportunities from Anthropic's Mythos and other frontier AI models. The group — co-chaired by the BoE and UK Finance — highlighted cybersecurity challenges flagged at the IMF spring meeting but emphasized industry readiness, use of AI to bolster cyber defences, and automation of mitigation/response. Firms were urged to review FS-ISAC guidance. For markets, the statement signals reduced near-term systemic risk to UK banks and financial stocks, which should limit downside pressure on the UK 100, though AI-driven cyber vulnerabilities remain a watch item.