Regulatory News
Bank, UK Finance run cloud outage drill with 38 firms
The Bank of England-led CMORG completed SIMEX26 on 8 October, a sector-wide exercise on a global cloud services disruption involving 38 major firms.
- CMORG completed its biennial simulation exercise, SIMEX26, on 8 October 2026.
- The drill focused on a global disruption to cloud-based services.
- Thirty-eight of the largest and most systemically important banks and market infrastructure operators took part.
Action
The Cross-Market Operational Resilience Group completed its biennial simulation exercise, SIMEX26, on 8 October 2026. This year’s scenario focused on a global cloud services disruption.

The exercise was opened by the Economic Secretary to the Treasury and hosted by the London Stock Exchange Group. It brought firms and financial authorities together in a crisis-management drill.
Respondents
CMORG is chaired by the Bank of England and UK Finance. HM Treasury, the Financial Conduct Authority and the wider financial sector also took part.
The exercise involved 38 of the largest and most systemically important banks and market infrastructure operators.
Effective
The exercise was completed yesterday, 8 October 2026. The Bank said firms now expect to take action based on the exercise to strengthen resilience and response to severe operational and cyber scenarios.
Source: Bank of England News,