The UK's £400 billion AI forecast came from a Google-commissioned report, and the new estimate is under a third of it, like a quote that shrinks once you ask for the working
By Brett Gavaghan, Founder of Adaptd ·
Britain's AI minister has told Parliament the government's central estimate is £120 billion by 2030, not the £400 billion officials quoted for almost two years. The lesson travels well to any AI sales pitch.
The short version
- The UK's AI minister put AI's economic boost at £55 billion to £140 billion by 2030, with a central estimate of £120 billion.
- Officials quoted £400 billion for almost two years, a figure from a 2023 report commissioned by Google.
- Before you trust an AI savings figure, ask who paid for it and what it assumes.
Every AI sales pitch has a big number in it. The UK has just shown what can happen when someone finally checks where the number came from.
What happened with the UK's AI estimate?
The UK government's central estimate of AI's economic boost is £120 billion by 2030, under a third of the £400 billion officials had quoted for almost two years. AI minister Kanishka Narayan gave the new range of £55 billion to £140 billion in answer to a parliamentary question, and called even that "hugely uncertain", WIRED reported in early November.
He said the £400 billion figure came from a 2023 report commissioned by Google and produced by consultancy Public First, now PF Global. His answer didn't withdraw the figure or say it was wrong.
Why is there such a gap?
The gap comes partly from how fast each model assumes people will adopt AI. PF Global's head of economics told WIRED the government's numbers assume a much slower rate of adoption than looked possible when its older model was built.
WIRED also found ministers had the lower estimate since at least November 2025. Once a big number gets loose, it takes a while to catch.
What should Australian business owners take from this?
Australian business owners should treat any AI savings figure as an estimate with assumptions built in, not a result. This is UK news with no direct effect here, but you'll meet the same kind of number in a vendor deck or a headline.
My take: AI is still worth your time, and a smaller number doesn't change that. Ask three things before you budget on a claim: who paid for it, what adoption rate it assumes, and whether anyone has measured it in a business your size. Then test it on one job of your own for a month.
Your own figure will be smaller than the brochure's. It will also be true.
Sources
Wondering what this means for your business?
That's exactly what the discovery call is for.