You can move the AI department into another building. The grid, the safety lab and the research money stay exactly where they are.

The machinery change is now done, and it is worth being precise about what it moves and what it leaves exactly where it was.

The Department for Science, Innovation and Technology, created three years ago, has been broken up. It was not just an office of policy. It was the home of four things that matter more than the nameplate above them. The AI Security Institute, the government body that tests advanced models for danger. The Sovereign AI Fund, the money meant to buy Britain its own computing power. UK Research and Innovation, which hands out roughly 8.8 billion pounds a year in research grants. And the Government Digital Service, the team that builds the state's own software. Under the new arrangement, science and technology move to a larger department under Jonathan Reynolds, now called Business, Innovation, Science and Trade. Digital moves to Culture. And artificial intelligence goes to a Minister of State who attends Cabinet, sitting jointly in the Cabinet Office and the culture department.

Look at what that separates. The science and the industrial base that AI is built on have gone to Business. AI itself sits in Culture, alongside broadcasting and sport, with a foot in the Cabinet Office. The one technology that most needs its science, its power and its money pulling in the same direction has been put in a different department from the base it depends on. You can draw an organisation chart that does this. You cannot make the dependencies go away by drawing it.

Move the boxes and none of the hard parts move with them. The AI Security Institute's ability to test a frontier model is its people and its testing capacity, not the letterhead on its door. UKRI's grants fund real laboratories that plan years ahead, and uncertainty about who signs the cheque is its own kind of cut. Most of all, the binding limits on what Britain can build in AI are physical, and no reshuffle touches them. A datacentre needs power, and a grid connection can take years to arrive. The body that runs the grid projects that datacentres, a small share of national electricity demand today, could be taking close to a tenth of it by the mid-2030s. That queue does not get shorter because the department that worried about it has been split in three.

There is a real cost to the change itself, and it is time. A machinery-of-government reorganisation pulls senior attention inward for months: who reports to whom, whose budget is whose, which official owns which brief. The people doing that work are the same people who would otherwise be clearing grid connections, standing up compute and running safety tests. Spending that attention on an internal reshuffle, at the moment the physical limits are the ones that bite, is a choice with a price even if the final wiring is sensible.

One detail deserves a plain flag, and it is not the one the critics expected. AI does have a minister now, and he attends Cabinet, so the old worry that no elected person would answer for it has been met on paper. The problem is the shape of the job. Accountability for AI has been split three ways: a Minister for AI who sits in two departments at once, a business secretary who now holds the science and the industrial base, and a culture department that has taken in digital. When an AI decision goes wrong in the NHS or the benefits system, the citizen affected needs one clear person who answers for it. A minister with no department of his own, borrowing authority from two secretaries of state who outrank him, may struggle to be that person. Accountability spread this thin can look complete on an organisation chart and still fail in the room where it matters.

None of this settles whether the technology department should have existed. Departments come and go, and a fair case can be made that technology should sit closer to the centre of economic policy. But the thing that decides whether Britain can do AI is not the shape of the department. It is the power, the compute, the grants and the tested-for-safety systems underneath it. Those are all still there this morning, exactly where they were, waiting on decisions a reshuffle does not make.