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Bank of England says it is testing AI risks to financial system

Published by Global Banking & Finance Review

Posted on April 16, 2026

3 min read

· Last updated: April 17, 2026

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Bank of England says it is testing AI risks to financial system
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April 16 (Reuters) - The Bank of England is testing the risks to the financial system caused by AI by conducting scenario analysis and simulations, the central bank said in a letter published by

Bank of England Conducts AI Scenario Analysis to Address Financial System Risks

Bank of England's Approach to AI Risks in the Financial Sector

Scenario Analysis and Simulations

April 16 (Reuters) - The Bank of England is testing the risks to the financial system caused by AI by conducting scenario analysis and simulations, the central bank said in a letter published by lawmakers on Thursday.

Response to Treasury Committee's Assessment

The BoE said it disagreed with an assessment by parliament's Treasury Committee that it was taking a "wait-and-see" approach to the risks presented by AI, and that it was analysing how AI investment and adoption were changing the financial system.

International Collaboration and Market Impact

Working with Global Counterparts

It is also working with international counterparts to understand how AI agents might affect trading in financial markets, BoE Deputy Governor for Financial Stability Sarah Breeden said in a letter to the Treasury Committee.

Focus on Market "Herding" Behaviour

Testing will focus on "herding" behaviour that could amplify selloffs during periods of market stress, Breeden said.

Emerging AI Risks and Cybersecurity Concerns

Anthropic's Mythos Product and Cyber Vulnerabilities

AI risks in the financial system came into sharper focus last week with the launch of Anthropic's Mythos product. Experts say its powerful coding ability could offer new ways to find cybersecurity vulnerabilities and exploit them.

Governor's Warning on Cyber Risk

BoE Governor Andrew Bailey said Anthropic may have "found a way to crack the whole cyber risk world open".

Regulatory and Governmental Responses

Critical Third Parties (CTP) Regime

The Treasury Committee criticised Britain's finance ministry for failing to commit to bringing major AI and cloud companies into the Critical Third Parties (CTP) Regime - which regulates key financial system infrastructure suppliers - before the end of 2026.

Committee Chair's Concerns

"I am pleased to see the Bank of England is grasping the nettle to some extent but I remain perplexed at the apparent inertia shown by the Treasury," Treasury Committee Chair Meg Hillier, a member of the governing Labour Party, said.

Unused Regulatory Powers

"The powers offered by the Critical Third Parties Regime are sitting unused while we remain vulnerable. I simply cannot understand why this is taking so long. We will continue to monitor this situation closely."

Government's Position on CTP Designation

Treasury minister Lucy Rigby told the committee that the government expects to make initial CTP designation decisions this year, but would not reveal which firms are under consideration in order to protect the integrity of the process.

Outlook for AI Adoption in the Financial Sector

The BoE's Financial Policy Committee on April 1 said firms have yet to deploy advanced AI such as agentic tools in ways that pose systemic risk, but warned that those risks could rise rapidly as the financial sector steps up adoption.

(Reporting by Andy Bruce; Editing by Andrew Heavens)

Key Takeaways

  • The BoE is running scenario analysis and simulations to assess systemic AI risks, including market ‘herding’ effects and cyber vulnerabilities.
  • Governor Bailey highlighted Anthropic’s Mythos model as a specific cyber threat, prompting heightened scrutiny.
  • The BoE disputes claims of a “wait-and‑see” stance, emphasizing proactive monitoring and collaboration with international peers.

Frequently Asked Questions

How is the Bank of England testing AI risks to the financial system?
The Bank of England is testing AI risks through scenario analysis and simulations focused on market stress and potential herding behaviours.
What concerns does the BoE have about AI in financial markets?
The BoE is concerned AI could cause market instability, amplify selloffs, and increase cybersecurity vulnerabilities as technology adoption grows.
What is the Critical Third Parties (CTP) Regime?
The CTP Regime is a framework aimed at regulating key infrastructure suppliers, such as major AI and cloud providers, within the UK financial system.
Why did the Treasury Committee criticize the UK government regarding AI regulation?
The Committee criticized the lack of urgency in extending the CTP Regime to major AI and cloud firms, leaving the financial system vulnerable.
What recent AI product heightened concerns about financial system risks?
Anthropic's Mythos, a product with powerful coding abilities, has heightened concerns about new cybersecurity vulnerabilities in financial markets.

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