More than 70 UK Lawmakers Want a Global Ban on Superintelligent AI

Key points

• More than 70 MPs and peers signed a letter urging Prime Minister Andy Burnham to back a ban on artificial superintelligence, or ASI.
• Fifteen former government ministers signed, along with senior figures from Labour, the Conservatives, the Liberal Democrats and the SNP.
• A bill to prohibit ASI was tabled in the House of Commons on Tuesday.
• Experts cited in the letter put roughly a one-in-ten chance of ASI killing all humans within the next decade.
• ASI does not yet exist; it describes a hypothetical AI that beats humans at nearly everything, from science to strategy to social reasoning.

Seventy-plus MPs and lords sent a letter this week to the British Prime Minister asking him to put the full weight of the UK government behind a new law that would ban the creation of artificial superintelligence, known as ASI. ASI is a hypothetical form of AI that would outperform humans across most tasks, not just one narrow skill like playing chess, but virtually everything a person can do. Nothing like it exists yet.

The letter followed a string of public warnings from AI researchers and safety experts who placed the odds of ASI wiping out humanity at around 10 percent within ten years. That figure is contested, but it was enough to push dozens of politicians across party lines to act. We covered the same wave of warnings two days ago in our story on the Anthropic researcher whose forecast reached the Senate floor.

Signatories include fifteen former government ministers, former head of the civil service Robin Butler, and senior Labour MP John McDonnell. That breadth matters: cross-party agreement at this scale is rare.

The bill they want Burnham to champion was tabled in the House of Commons on Tuesday. It would make it illegal to build ASI outright. The lawmakers also want the UK to lead an international movement to stop other countries building it, the same logic that drives nuclear non-proliferation treaties.

How worried should ordinary people be?

A 10% extinction chance sounds terrifying, but that number comes from a specific community of AI safety researchers, and plenty of other AI scientists think it's wildly overstated. The alarm cited in The Guardian's reporting originates with an Anthropic employee. Anthropic builds some of the world's most powerful AI systems, so the concern isn't coming from nowhere, but it's one data point, not a scientific consensus.

Today's AI, the kind powering chatbots and image generators, is nowhere near ASI. The gap between a chatbot and a system that could genuinely outsmart humanity across the board is enormous, and most researchers don't expect to close it soon.

The political signal, though, is real. Seventy lawmakers co-signing a letter on any single issue takes effort. Backing a pre-emptive ban on a technology that doesn't exist yet is genuinely unusual.

What happens next?

The bill still needs to pass Parliament, which is a long road. International coordination would be harder: the countries most capable of building ASI first, the United States and China among them, have shown little appetite for binding restrictions. The UK acting alone sets a symbolic precedent but probably doesn't slow the research.

Watch whether other governments pick up the bill's language. Adoption elsewhere would mark this week's letter as the opening move in a serious diplomatic push. Silence would leave it as a warning on the record and little more.

For ordinary readers, the practical question isn't whether ASI arrives next year. It's whether governments coordinate before the technology overtakes their ability to regulate it at all.