The Baselines Are the News: What Britain’s Red Book Scores for AI

Key points

• Table 6.1 of Budget 2026, published by HM Treasury on 28 October 2026, scores the single “Artificial Intelligence” line at £35m, £115m, £185m, £145m, £5m and £5m across 2026-27 to 2031-32, a total of £490m, while Table 6.2 adds £160m of cash for Sovereign AI as financial transactions to 2029-30.
• Three figures moved between the Treasury’s 24 October release and the Red Book: the Sovereign AI R&D Procurement Scheme rose from £60m to £80m, local AI partnerships appear as both £30m and £15m, and the chip design line appears as both £18m and £20m.
• The administration-budget cut that the AI investment is meant to enable is scored at £185m in 2027-28 rising to £635m in 2031-32, but the Red Book attributes no specific saving to AI and the £50m Civil Service AI fund is reinvested savings, not new money.

The press release came four days early; the numbers that bind came with the Budget. On 28 October 2026 John Healey, the Chancellor of the Exchequer, delivered his first Budget and HM Treasury published Budget 2026, the 166-page Red Book. Paragraph 4.128 says the government “has invested over £700 million” in AI security, adoption, the Data Centre Covenant and British AI hardware. Lucy Rigby, the Economic Secretary to the Treasury, repeated the figure when she closed the next day’s debate, telling the Commons, according to Hansard, that the government was “putting more than £700 million behind making it safer, more secure and easier to adopt”.

The scorecard tells a narrower story. What matters for anyone selling to, regulating or budgeting against the British state is not the headline but the baseline: the lines in Table 6.1 and Table 6.2, the years they fall in, and the savings they are assumed to unlock. On that reading the AI package is real, smaller than it sounds, back-loaded to 2028-29, and resting on an efficiency assumption that the Red Book asserts without itemising. AI & GPP priced the pre-Budget package in Britain Prices Its AI Security State; this follow-up is read from the Budget documents themselves.

What the tables score, year by year

Table 6.1 carries one AI line. Line 31, “Artificial Intelligence: Strengthen the UK’s AI security, accelerate adoption across the economy, and support strategically important UK AI capabilities”, is classed as spend and scores £35m in 2026-27, £115m in 2027-28, £185m in 2028-29, £145m in 2029-30, then £5m in each of 2030-31 and 2031-32. The six years sum to £490m. The Treasury’s Table 6.1 and 6.2 spreadsheet, published among the supporting documents for Budget 2026, gives the same six figures. Table 6.2, which records financial transactions rather than borrowing, adds line 4, “SovAI: Additional funding for Sovereign AI to invest in and support the UK’s promising AI companies”, at £25m, £45m, £45m and £45m from 2026-27 to 2029-30 and nothing thereafter: £160m of cash scored as a financial transaction rather than as borrowing.

Two further lines sit under “Transforming the Civil Service”. Line 63 scores the decision to cut departmental administration budgets by 20 per cent by 2029-30, against the 16 per cent planned at Spending Review 2025, as savings of £185m in 2027-28, £405m, £595m, £615m and £635m in 2031-32. Line 64 reinvests part of that in “a new AI Fund”: £25m in each of 2027-28 and 2028-29, £50m in all.

Nothing in the documents maps the paragraph-level promises onto line 31. The Budget 2026 policy costings, the 122-page companion, covers only tax and annually managed expenditure, so the AI line, which is departmental spending, has no costing note. The table below is built from the Red Book, the tables and the Treasury’s release of 24 October 2026, Chancellor unveils Britain’s ambitious plan for AI.

The new-money lines in the table sum to roughly £600m (£585m to £602m, depending on which of the conflicting figures is taken, and excluding the £50m fund that is reinvested savings); the chapter’s “over £700 million” headline also takes in initiatives outside this piece’s scope. The Red Book’s own executive summary helps with two sub-totals: it describes “£154 million to strengthen cyber defences”, which matches the NERV Centre, the public-sector programme and the Cyber Shield added together, and “an additional £140 million in the Sovereign AI Unit”. Healey’s speech, recorded in Hansard, put it as “backed today with another £140 million”. That figure appears to combine the £60m for the fund and the £80m for procurement; the documents do not say so, and Table 6.2 books £160m for Sovereign AI, a decomposition the Treasury has not published.

Which figures moved between Friday and Wednesday

Three numbers changed or split between release and document. The procurement scheme is the clearest: £60m on 24 October, £80m in paragraphs 4.121 and 6.105 on 28 October, with a remit that now reads health and care, AI security, assurance and safe adoption “as well as delivering innovative approaches to warfighting”. AI & GPP’s earlier £60m figure is superseded.

The other two are conflicts inside the Red Book. Paragraph 4.135 confirms “£30 million to pilot local partnerships” with three Yorkshire combined authorities; paragraph 6.101 provides “£15 million funding for Local AI partnerships” from 2026-27 to 2029-30. Paragraph 4.141 says “a further £20 million” will support reindustrialisation in AI hardware “including” the UK Advanced Chip Design Academy; paragraph 6.87, the Scotland section and the Chancellor’s speech all give the academy £18m. The first pair cannot both be the same line; the second can, if £2m sits outside the academy. Neither is explained.

Two items from the release have no counterpart. The “£10 million per year” to study how AI will reshape jobs and industry does not appear as a separate line in the Red Book, and the AI Economics Institute’s “over the next three years” has become an undated “additional £23 million”.

Department naming is its own moving baseline. The Red Book places the Commercial Innovation Hub and the quantum procurement catalyst in the “Department for Business, Innovation, Science and Trade (BIST)”, hands the prize to DCMS, and marks both departments’ Annex B budgets as “provisional for Machinery of Government changes announced in July 2026”. Sir Geoffrey Clifton-Brown, who chairs the Public Accounts Committee, told the Commons on 29 October that digital policy had moved from the Cabinet Office to DSIT, that “DSIT was abolished”, and that it now sits in DCMS, which did not give his committee “any confidence that the Government have a real policy on digital and AI”. Rigby’s reply confirmed the £700m but did not address the machinery point.

Why the savings line carries the weight

The political case for the package is that it pays for itself through a smaller state. Paragraph 2.12 says the Civil Service will shrink “through maximising the opportunities presented by AI adoption and digital transformation”; paragraph 2.14 raises the administration-budget cut from 16 per cent to 20 per cent by 2029-30 and says this “will save an additional £595 million in 2029-30 compared with previous plans”. Paragraph 2.15 adds £35m to set up GovAI and the £50m transformation fund it will manage. Healey told the Commons he was “investing in AI for the civil service transformation, to support saving a further £600 million from back-office costs”. The £600m appears to be the rounded 2029-30 figure in line 63; the Red Book nowhere attributes a specific saving to AI.

The OBR’s October 2026 Economic and fiscal outlook treats the programme as a resource saving of “£0.5 billion a year from 2028-29” and carries a standing caution on the category: “Some past efficiency programmes have not delivered the initially expected levels of savings.” On the economy, the Red Book cites an OECD range of 0.4 to 1.3 percentage points a year for what AI might add to UK productivity growth; the OBR’s central forecast is “0.2 percentage points a year by the medium term”, with scale and timing “highly uncertain” and 30 per cent of businesses reporting use of at least one AI technology in September 2026.

A press release promises money to the public. A Budget table promises it to Parliament, by year, net of what it is assumed to save.

What the Budget does not put on a statutory footing

Nothing in the Red Book gives the AI Security Institute statutory powers, creates the regulatory sandbox or names an AI bill. The sandbox remains, in paragraph 4.131, “scoping for a regulatory deployment sandbox to help organisations deploy new technologies”; the only legislative commitment in the AI passage is a consultation “next year” on insecure technology and cyber-breach liability. The House of Commons Library’s briefing AI regulation in the UK (CBP-10003), published on 14 October 2026, records that the government’s response to the AI Opportunities Action Plan “intended to establish the AISI as a statutory body” and that “To date, the AISI has not been given statutory powers.” The pattern AI & GPP described in Deployment Before Law now has a six-year funding profile attached and still no act.

The Opposition did not contest the AI lines. Andrew Griffith, the shadow Chancellor, opened the 29 October debate with a reply of more than 3,000 words in Hansard that did not mention artificial intelligence; the only sustained challenge came from the PAC chair, and it was about machinery rather than money.

For buyers, suppliers and officials, three baselines now matter more than any announcement. The first is £35m: the whole of what Table 6.1 adds for AI this financial year, which means most contracts under the new schemes will be let against 2027-28 and 2028-29 money. The second is line 63: the £595m of 2029-30 savings that the Civil Service AI fund is meant to help deliver, which the 2027 spending review will test against outturn. The third is the Commons timetable: the Budget resolutions are put on Tuesday 3 November, after which the AI chapter becomes the government’s spending plan rather than its prospectus.

Questions this answers

How much new money does the UK Budget actually score for AI, and in which years?
Table 6.1 line 31 scores £35m in 2026-27, £115m in 2027-28, £185m in 2028-29, £145m in 2029-30 and £5m in each of the two following years, £490m in total, with Table 6.2 adding £160m of Sovereign AI cash from 2026-27 to 2029-30, according to HM Treasury’s Table 6.1 and 6.2 spreadsheet. The paragraph-level promises in the Red Book are not mapped onto that line.

Which AI figures differ between the 24 October Treasury release and the Red Book?
The Sovereign AI R&D Procurement Scheme rose from £60m in the 24 October release to £80m in the Red Book; local AI partnerships appear as £30m in paragraph 4.135 and £15m in paragraph 6.101; the Edinburgh chip design line is £18m in the release and paragraph 6.87 but “£20 million” including the academy in paragraph 4.141. The release’s £10m a year on AI and jobs has no separate Red Book line.

Does the Budget give the AI Security Institute or the cyber sandbox a legal basis?
No. The Red Book’s AI chapter contains no statutory commitment for AISI, describes the sandbox as “scoping”, and promises only a consultation next year on insecure technology. The Commons Library’s CBP-10003 records that “To date, the AISI has not been given statutory powers.”

Sources

1. Budget 2026 — HM Treasury, 28 October 2026 (PDF)
2. Table 6.1 and 6.2 Budget 2026 Policy Decisions — HM Treasury, 28 October 2026 (XLSX)
3. Budget 2026: Policy costings — HM Treasury, 28 October 2026 (PDF)
4. Chancellor unveils Britain’s ambitious plan for AI — HM Treasury, GOV.UK, 24 October 2026
5. Financial Statement and Budget Report — Hansard, House of Commons, 28 October 2026
6. Budget Resolutions — Hansard, House of Commons, 29 October 2026
7. Economic and fiscal outlook – October 2026 — Office for Budget Responsibility, 28 October 2026
8. AI regulation in the UK, Research Briefing CBP-10003 — House of Commons Library, 14 October 2026 (PDF)
9. Supporting documents for Budget 2026 — HM Treasury, GOV.UK, 28 October 2026