Last Updated on September 28, 2026
Three big numbers come up whenever UK infrastructure spending is discussed, and they are easy to confuse. One is a funding promise, one is a list of projects, and one is a worldwide forecast.
Finding. The UK’s two headline infrastructure figures measure different things. At least £725bn is government funding over ten years (HM Treasury and NISTA, 19 June 2025). £718bn is the value of 734 announced public and private projects in the Infrastructure Pipeline (9 March 2026). They overlap, so they cannot be added. Source: Whito, whito.co.uk/infrastructure-companies/research/uk-infrastructure-pipeline-what-the-numbers-actually-are, September 2026. Free to quote with a link to this page.
The usual mistake is to treat the biggest number as the most important one. For anyone trying to work out what is actually being built in the UK, the useful number is the smallest and most specific: a named project in the pipeline, with a sponsor and a date.
Number one: at least £725bn
What it is. Government funding for economic and social infrastructure over the next decade. It comes from UK Infrastructure: A 10 Year Strategy, published by HM Treasury and NISTA on 19 June 2025. The press release says at least £9bn of it is allocated to 2025-26.
What it is not. A list of projects. It is a spending commitment across the public sector. It includes social infrastructure, such as schools and hospitals, alongside roads, energy and water.
Number two: £718bn across 734 projects
What it is. The value of the UK Infrastructure Pipeline, second edition, published on 9 March 2026. The pipeline is the government’s ten-year forward look at major infrastructure projects that are under construction, in development or at a pre-project stage. It covers both private and public sector investment. Energy is the largest sector, at £365bn.
How it has moved. The first edition, on 17 July 2025, covered about 780 projects worth £530bn, of which £285bn was funded solely by the public sector. The second edition lists fewer projects but a higher total.
The rule that matters. Only projects that have already been publicly announced are included. A scheme still in early planning, or one the government has not yet confirmed, is not in the £718bn. That makes the pipeline conservative by design.
One detail worth knowing. The NISTA delivery blog says 240 of the 734 projects are potential opportunities for private investment, and 40 are already looking for up to £21bn.
Number three: £111 trillion (US$151.1 trillion)
What it is. PwC’s forecast of cumulative global infrastructure spending through 2050, published on 28 April 2026. PwC puts annual spending at £3.25 trillion (US$4.4 trillion) in 2024, rising to £5.09 trillion (US$6.9 trillion) by 2050.
Why it is here at all. It is easy to confuse with the UK figures. It is a worldwide figure from a private firm’s model and says nothing specific about the UK.
Why you cannot add them up
The £725bn is money the government says it will spend. The £718bn is the value of projects, and part of it is private money. Some of that government funding pays for projects in the pipeline. Some pays for things that are not large enough, or not announced enough, to be listed. Some pipeline projects are paid for entirely by private investors.
So the two figures overlap, by an amount neither source states. Adding them double-counts. Subtracting one from the other means nothing. Quote each one for what it is.
The other two figures that get mixed in
£27.8bn. The National Wealth Fund’s core capitalisation. Its stated mission is to drive more than £100bn of finance into UK infrastructure, supply chains and businesses.
Up to £36.6bn. A single term loan from the National Wealth Fund to build Sizewell C, announced on 22 July 2025. We found no official page that reconciles that loan with the £27.8bn. So we do not compare the two, and nor should anyone else without a source.
What this means for a UK firm
For almost every business, nothing changes on Monday. These numbers describe a decade of spending, most of it through large contractors.
If you are in the supply chain, the pipeline is the useful document. It names projects, sponsors and stages. Contracts are published on Find a Tender and Contracts Finder, and National Highways also uses its own eSourcing portal. National Highways requires its direct suppliers to subcontract at least 25% of their work to SMEs, which is one route in for smaller firms.
If you are not in the supply chain, the honest advice is to ignore the headline and carry on.
Method and limits
Method. Official pages only: GOV.UK, the NISTA delivery blog (projectdelivery.gov.uk), the National Wealth Fund and National Highways. The global figure is PwC’s own press release. Every page was opened and read on 23 September 2026, and each figure is quoted as the source states it.
Limits. The pipeline pages we read gave no “data as at” date and no price basis. The NISTA pipeline web app did not load for us, so project-level detail was not checked. We did not estimate the overlap between the two UK figures, because neither source states it. The first-edition totals are as GOV.UK reported them. This note will be updated when the pipeline is next revised.
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Sources, each read on 23 September 2026
- Strategy press release, 19 Jun 2025
- Strategy publication page
- Pipeline second edition, 9 Mar 2026
- NISTA blog, 10 Mar 2026
- Pipeline first edition, 17 Jul 2025
- NWF strategy
- NWF Sizewell C, 22 Jul 2025
- PwC, 28 Apr 2026
- National Highways supplier guide (updated 11 Mar 2026)
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