In 2024/25, UK public sector organisations spent £434 billion on goods, services and works — up £19 billion on the year before. Roughly a third of all government spending now runs through procurement. It is, by a wide margin, one of the largest and most stable markets in the UK economy.
And yet most businesses selling into it are still working from a mental model of the public sector that's two reforms out of date. The Procurement Act 2023 has fully bedded in. Crown Commercial Service doesn't exist anymore — it's now the Government Commercial Agency. There's a new Prime Minister with a very different set of priorities to the last one. None of that shows up in most suppliers' pitch decks yet.
The rulebook has genuinely changed
The Procurement Act 2023 is past its first anniversary and has moved from "new law" to what GovNet's 2027 whitepaper calls the operating system for public procurement. Payment and performance transparency duties are now live — contracting authorities have to publish contract performance and payment data via the Central Digital Platform, which means a supplier's track record is far more visible (for better or worse) than it used to be.
On top of that, the Government Commercial Agency formed in April 2026 from what used to be Crown Commercial Service and several Cabinet Office commercial teams. If your team's institutional knowledge still refers to "CCS frameworks," it's worth a refresh — the agreements themselves mostly carry over, but the organisation running them, and some of the routes to market, don't.
Then there's the political layer. Andy Burnham became Prime Minister in July 2026, bringing a regional-growth, housing-and-prevention focused agenda shaped by his time leading Greater Manchester. Machinery-of-government changes like the redistribution of responsibilities from the old Department for Science, Innovation and Technology, and the creation of the Department for Business, Innovation, Science and Trade, have shifted who owns which budgets. None of this is optional background reading — it determines who you're actually supposed to be pitching to.
One pitch will not win five buyers
Central government, defence, local government, the NHS and education all buy differently — different thresholds, different cycles, different people in the room. A generic "we help public sector organisations" pitch reads as generic because it is. A few examples of how different the terrain actually is:
- Central government spends £150bn+ a year across 450+ departments and bodies, and increasingly rewards suppliers who understand departmental policy priorities, not just the tender spec.
- Defence is its own market entirely — a separate portal, a £10,000 (not £12,000) notification threshold, and a published government commitment to grow SME spend to £7.5bn by 2028.
- Local government covers 317 different authorities in England alone, each with its own political priorities and social value expectations.
- The NHS is mid-transformation under the 10 Year Health Plan, and increasingly wants evidence of patient and productivity outcomes, not just innovation for its own sake.
- Schools, colleges and universities run on tight seasonal buying cycles — miss the window and you can lose a year, not a quarter.
"Being on a GCA framework is like being in a big shop window — you still have to get buyers to walk in."
From GovNet's 2027 whitepaper, Part One: The evolving role of the Government Commercial Agency
That line is worth sitting with. A framework listing gets you visibility. It doesn't get you contracts. The suppliers actually winning work in 2027 are the ones treating framework access as the start of a sales process, not the end of one.
Want the full breakdown?
GovNet's free 2027 whitepaper covers all five sectors, the new procurement process, and a practical framework for winning contracts — 60 pages, no cost.
Where to actually start
If you take one thing from this, take this: the businesses winning public sector contracts in 2027 aren't necessarily the ones with the best product. They're the ones who show up before the tender exists, understand the buyer's actual priorities, and can prove — with evidence, not adjectives — that they deliver. GovNet's whitepaper lays this out as a repeatable four-phase framework:
Market research & preparation
Pick two or three sectors or departments you can genuinely go deep on, not every buyer at once.
Market entry strategy
Register on the right platforms and frameworks, and start building relationships before a requirement is published.
Bid development & submission
Qualify opportunities honestly, build social value in from the start, and back every claim with evidence.
Delivery & growth
Treat winning the contract as the start of the relationship — document outcomes, and use them to open the next door.
The bottom line
Public sector procurement is not getting simpler, and it is not getting smaller. £434 billion a year and rising is not a market anyone can afford to approach casually — but it's also not a closed shop. The Act's SME provisions, smaller lots and faster payment terms exist specifically to widen access. The businesses that will do well out of 2027 are the ones who spend a few hours now understanding what's actually changed, rather than finding out the hard way halfway through a lost bid.