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UK to work with other 'middle powers' on AI security, minister says

Published by Global Banking & Finance Review

Posted on April 28, 2026

2 min read

· Last updated: April 28, 2026

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UK to work with other 'middle powers' on AI security, minister says
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UK Partners with 'Middle Powers' to Develop International AI Security Standards

Britain's Collaborative Approach to AI Security

LONDON, April 28 (Reuters) - Britain will work with other "middle powers" such as France, Germany and Canada on AI security to help shape the future of a technology dominated by the United States and China, Technology Secretary Liz Kendall said.

International Interest in UK's AI Security Institute

Britain's AI Security Institute (AISI) generated interest from other countries when it evaluated Anthropic's Claude Mythos model earlier this month, showing that it could exploit security weaknesses, she said on Tuesday.

Global Collaboration and Knowledge Sharing

• Kendall told reporters: "Many other countries are extremely interested in working with us to learn some of the lessons from what AISI is doing."

Upcoming Best Practice Publication

• Britain will publish best practice on evaluating AI models in July at the next meeting of AI Security Institutes.

Partnerships with Leading AI Companies

• AISI, which sits under Kendall's department, has agreements with OpenAI, Anthropic and others to evaluate their models.

Maintaining Strong US-UK AI Relations

• Kendell said work with Britain's peers should not be seen as weakening its "deep, close and enduring relationship" with the United States, which is home to the five hyperscalers that control about 70% of global AI compute power.

(Reporting by Paul SandleEditing by Gareth Jones)

Key Takeaways

  • The UK’s AI Security Institute (AISI) has gained international attention after revealing exploitable vulnerabilities in Anthropic’s Claude Mythos model during a security evaluation (en.wikipedia.org).
  • UK plans to publish best practice guidelines for evaluating AI models in July at the upcoming AI Security Institutes meeting (time.com).
  • Despite this new coalition among ‘middle powers,’ UK emphasized that cooperation should complement—not weaken—its close “deep, close and enduring relationship” with the U.S., which still controls around 71% of global AI compute via hyperscalers (time.com)

References

Frequently Asked Questions

Which countries is the UK partnering with on AI security?
The UK is partnering with France, Germany, and Canada, among other 'middle powers', to collaborate on AI security.
What is the AI Security Institute (AISI)?
AISI is a UK government body under the Technology Secretary that evaluates AI models and develops best practices for AI security.
What recent work has AISI conducted?
AISI evaluated Anthropic's Claude Mythos AI model, identifying potential security weaknesses, and has agreements with companies like OpenAI for further evaluations.
Will international collaboration affect the UK-US AI relationship?
The UK states that collaborating with other countries will not weaken its close relationship with the US on AI matters.
When will the UK publish AI evaluation best practices?
Britain will publish best practices for evaluating AI models in July at the next meeting of AI Security Institutes.

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