UK financial sector completes cloud disruption resilience exercise

The Cross-Market Operational Resilience Group (CMORG) has completed SIMEX26, a biennial crisis simulation focused on a global cloud services disruption.

• The exercise was completed on 8 October 2026 and involved the 38 largest and most systemically important banks and market infrastructure operators, alongside the Bank of England, UK Finance, HM Treasury, Financial Conduct Authority, and the wider financial sector.
• The simulation was opened by the Economic Secretary to the Treasury and hosted by the London Stock Exchange Group; the Bank said firms are now expected to take action based on the exercise to strengthen resilience against severe operational and cyber scenarios.