UK

1 item across 1 edition. First seen Mon 14 Sep, last seen Mon 14 Sep. Traced across 1 weekly review.

How this story has evolved

From the week in review: the connections, developments and open questions filed under UK, newest week first.

Week of 7–13 September 2026

Connection

Third-party verification was proposed, legislated and declined in the same week

All three developments concern the same object: an outside party with the access to check a frontier model. On 9 September Governor Gavin Newsom signed SB 813 and AB 1405, which his office describes as a framework for "independent verification organizations" and "a state registry for AI auditors". On the same day, Reuters reported, OpenAI urged Congress to adopt "capability-based national AI safety requirements, including testing standards, independent assessments, cybersecurity protections and incident-reporting rules for the most advanced AI systems". On 12 September Amodei's essay committed Anthropic to embedded evaluators with "Desks in our offices, access badges, and company laptops".

Connection

One company published its misuse findings, asked the industry to slow down, withheld a model from a state evaluator and lost the Pentagon

Anthropic stories landed on four consecutive reporting days. On 9 September IT Pro reported that the company had withheld Claude Mythos 5.1 from the UK AI Security Institute. On 10 September it published a threat report describing weapons and biological misuse of Claude. On 11 September DefenseScoop reported that about 90% of the Pentagon's classified AI workloads had moved off its models. On 12 September its chief executive published an essay asking companies to pace capability gains.

Development · Wed 9 Sep

FT: Anthropic declined to give the UK AI Security Institute pre-release access to Claude Mythos 5.1, the first time it has left AISI out

IT Pro reported on 9 September that the Financial Times had revealed "Anthropic declined to submit the model for testing despite granting access to similar US organizations". The model is Claude Mythos 5.1, which "launched on 1 September, with access to the AI model only granted to approved partners".

Open question

Why did Anthropic withhold Claude Mythos 5.1 from the UK AI Security Institute, and will the next model be submitted?

Anthropic published no explanation. IT Pro states that "Details on why Anthropic declined to offer access haven't been confirmed". IT Pro credits the Financial Times report, which is paywalled and was not read for this edition; Semafor reports the decline without crediting the FT. No source has published the terms of Anthropic's arrangement with AISI, or whether any obligation was breached.

Monday, 14 September 2026

UK Joint Committee on Human Rights calls for a dedicated AI bill and a statutory AI regulator Update

IT Pro·BBC (via Yahoo News)

In a report published on 14 September, Parliament's Joint Committee on Human Rights called for a new bill on AI to "address the scale and seriousness" of the threats it identifies, saying the current legal framework is "fragmented and difficult to navigate".
The committee's chair, Labour MP Alex Sobel, said: "Nowhere in the world, including the UK, has a current legislative and regulatory approach to AI that is fit for purpose."
IT Pro lists the recommendations: a single independent statutory AI oversight body able to set codes of practice, enforce transparency and impose sanctions; a distinction between low-risk and high-risk systems; outright bans on some uses including subliminal techniques and inappropriate biometric profiling; due diligence across the AI supply chain; and clarification of data protection law on automated decision-making. The report notes the AI Security Institute operates voluntarily, without statutory power to test or block a risky release.
This is a select-committee recommendation, not law. The BBC reports Education Minister Georgia Gould pointed to existing government action on non-consensual deepfakes, cyber security legislation and the AI Security Institute; no dedicated AI bill has been introduced, and the government is not obliged to accept the recommendations.

UK US State Policy Deepfakes Privacy