24 February 2025. That is the day the Procurement Act 2023 went live and the rules for selling to the UK public sector got their biggest rewrite in a generation. Sixteen months on, most suppliers still have not read past the headlines, and most of what has been written for them is either legal summary or software marketing. This is the plain English version: what the Act actually changed for suppliers, which parts are hype, and what to do differently now the new regime has bedded in.
What the Procurement Act 2023 is and when it took effect
The Act received Royal Assent in October 2023 and went live on 24 February 2025, four months later than the original October 2024 date. It replaces the EU-derived Public Contracts Regulations 2015 (PCR 2015) for new procurements in England, Wales and Northern Ireland. Scotland keeps its own procurement rules.
Two things to hold onto before the detail. First, the old rules did not vanish. Any procurement started before 24 February 2025 still runs under PCR 2015, including call-offs from frameworks let under the old regime, so you will operate in a dual world for several years. Second, the Act is different in architecture, not just wording. It was built around transparency from planning through award through performance, and that transparency is where the supplier advantage lives.
The full text sits on legislation.gov.uk and the official guidance collection is at gov.uk. Neither is a fun read. Here is what matters.
The seven changes that matter for suppliers
| Change | What it is | Why you care |
|---|---|---|
| Pipeline notices | Buyers expecting to spend over £100m a year publish an 18-month forward pipeline | You see work coming before any tender exists |
| Open frameworks | Frameworks that reopen to new entrants during their life | Missing the launch window no longer locks you out for years |
| Competitive flexible procedure | One adaptable competition route replaces the old menu of procedures | Every major tender can run differently, so read the rules every time |
| 30-day payment terms | Payment terms flow down the supply chain | Subcontractors get the same protection as primes |
| MAT replaces MEAT | Award goes to the most advantageous tender, not the most economically advantageous | Quality and social value arguments carry formal weight |
| Debarment list | A central, published list of excluded suppliers | Poor performance and misconduct now follow suppliers around |
| Transparency notices | Buyers must publish notice before making a direct award | Uncontested work becomes visible, and contestable |
Each one deserves a closer look, starting with the biggest.
Pipeline notices hand you the buyer's diary
This is the largest structural gift the Act gives suppliers. Contracting authorities that expect to spend more than £100m a year must publish pipeline notices setting out what they plan to procure over the coming 18 months. Read that again. The biggest buyers in the country now publish their shopping lists in advance.
Why it matters is timing. By the time a tender is published, the specification is written, the budget is set, and an incumbent or a well-embedded challenger has usually shaped the thinking. The suppliers who win consistently work the pre-tender window, and pipeline notices mark exactly where that window opens. Our guides on finding public sector contracts before tender and buyer intent signals cover the craft in detail.
One caution. Pipeline quality varies. Some buyers publish rich, dated pipelines. Others publish thin lists that change without warning. Treat a pipeline notice as one intent signal among several, alongside awards falling due for renewal, budget papers and market engagement activity.
AtlasRevenue's buyer graph indexes 1,567 awarded contracts worth over £11.06bn across 858 buyers and 28 sector desks in the trailing 12 months.
That is the scale of signal the transparency regime now throws off. The Act made the data public. It did not make anyone read it. The gap between published and read is your edge.
Open frameworks end the multi-year lockout
Under the old regime, a closed framework was a door that locked for its full term. Miss the bid window in year one and you watched competitors sell through it until expiry. The Act introduces open frameworks, which must reopen to new entrants at points during their life.
For SMEs this is a genuine change. The businesses most likely to miss a framework launch, because they were too early stage, had no bid team or simply never heard about it, now get another shot mid-term. The discipline is diary management. Reopening windows are limited, so track the frameworks that matter to you and be ready when they crack open. Start with our guide to getting on a public sector framework.
The competitive flexible procedure: fewer procedures, more variety
The old menu of procedures, restricted, competitive dialogue, competitive with negotiation, has collapsed into two main routes: the open procedure for straightforward buys, and the competitive flexible procedure for everything else.
Competitive flexible means the buyer designs the competition. Number of stages, negotiation, demonstrations, down-selects: their call, within the Act's rules. The practical consequence for suppliers is blunt. Your assumptions from the last bid do not carry. Read every procurement's rules as if you have never bid before, because process is now bespoke per competition. The upside is real too: stages built around demonstrations and dialogue reward suppliers whose offer is genuinely good in the room, not just well described on paper.
30-day payment terms now flow down the chain
Public contracts carry implied 30-day payment terms, and under the Act those terms flow down the supply chain into subcontracts. If you deliver as a subcontractor under a public contract, you are entitled to the same 30-day terms as the prime.
This is quietly significant for small suppliers who have spent years funding a prime's working capital. Reference the terms in your subcontracts, invoice cleanly, and chase with the legislation behind you. Buyers must also publish key performance indicators for contracts over £5m and report against them, so delivery performance on big contracts is increasingly a matter of public record.
MAT, the debarment list and transparency notices
Three smaller changes that add up.
MAT replaces MEAT. Awards now go to the most advantageous tender rather than the most economically advantageous tender. One word dropped, and it is a signal to evaluators: value means more than price. Quality, social value, resilience and delivery confidence have formal room to win. If your pitch has always been better rather than cheapest, the wording of the regime finally agrees with you.
The debarment list makes exclusion portable. Suppliers can be excluded for misconduct or poor performance, and a central, published debarment list means the consequences follow you between buyers. For most SMEs this is housekeeping rather than threat. Keep tax, compliance and delivery clean, and take performance issues seriously, because they now have teeth.
Transparency notices expose direct awards. When a buyer intends to award a contract without competition, it must publish a transparency notice first. Uncontested work used to surface after signature, if at all. Now you can see it coming, which means you can challenge it, or more productively, treat it as intelligence about which incumbents are embedded where.
What the Act did not change: ignore the hype
It did not make winning easier. The Act changes the plumbing, not the competition. Bids are still scored, evaluation discipline still decides, and the supplier who answers the question asked still beats the supplier with the better product and a vague response.
It did not abolish bureaucracy. Below-threshold rules are simpler and the direction of travel is a single central digital platform for notices, with Find a Tender at the centre of that consolidation. You will still complete supplier questionnaires and chase clarification answers.
And it did not reset the market. Contracts procured under PCR 2015 continue under PCR 2015. Incumbents are still incumbent. The dual regime means you need to know which rulebook governs any given opportunity before you rely on a new right the old rules never granted.
What to do differently this year
If you are building your public sector motion from scratch, the complete supplier guide gives you the full sequence. If you are already in the game, five moves, in order.
One. Build a pipeline-notice watchlist. List your ten target buyers, find their pipeline notices, and log every relevant line with its expected date. This is the cheapest market intelligence UK procurement has ever offered.
Two. Time your pre-tender engagement off the pipeline. The window for shaping a requirement sits months before publication, and our guide to the six-month pre-tender window maps it stage by stage.
Three. Diarise framework reopenings. Open frameworks only help suppliers who show up when the window opens.
Four. Treat every competitive flexible tender as new terrain. Read the procedure document first, plan resource around the stages, and never assume this buyer runs competitions like the last one.
Five. Mine the transparency exhaust. Award data, KPIs, transparency notices and pipelines together tell you who buys what, from whom, at what price, and when it renews. Demand detection is now a data problem, and data problems reward whoever reads first.
Domiciliary and home care accounts for £405.5m of awarded value on AtlasRevenue's Adult Social Care desk: 69% of the entire desk.
That is what reading the exhaust looks like in practice. One desk, one dominant category, and a clear answer about where the money concentrates. Every sector has a shape like this, and the Act's transparency regime is what makes the shape visible.
Frequently asked questions
When did the Procurement Act 2023 come into force?
24 February 2025. The Act received Royal Assent in October 2023 and was originally due to go live in October 2024 before a four-month delay. Procurements started on or after the go-live date run under the new regime.
Does the Act apply to contracts awarded before February 2025?
No. Contracts procured under the Public Contracts Regulations 2015 stay under those rules, including call-offs from frameworks let before go-live. Expect to work under both regimes for several years and always check which one governs the opportunity in front of you.
What is a pipeline notice?
A forward notice published by contracting authorities expecting to spend over £100m a year, setting out planned procurements over the coming 18 months. For suppliers it is early warning: the work appears months before any tender exists, which is exactly when engagement is most valuable.
What is the difference between MAT and MEAT?
Under the old rules, contracts went to the most economically advantageous tender, MEAT. The Act drops the word economically, so awards now go to the most advantageous tender, MAT. In practice it gives evaluators explicit cover to weight quality, social value and delivery confidence alongside price.
Can I join a framework I missed under the new rules?
If it is an open framework let under the Act, yes. Open frameworks must reopen to new suppliers at set points during their life, so track the reopening windows. Closed frameworks and frameworks let before February 2025 still lock at award, so check which type you are looking at before you plan around it.
Does the Procurement Act 2023 apply in Scotland?
No. The Act covers England, Wales and Northern Ireland. Scottish contracting authorities continue under Scotland's separate procurement legislation, so check the regime before you bid across the border.
Put the transparency to work
The Act's real gift to suppliers is information: pipelines, notices, KPIs, award data, all public and mostly unread. AtlasRevenue reads it for you. Tell the scan what you sell and it maps live demand across 858 tracked buyers and 28 sector desks, with the buyers, incumbents and renewal timing attached. Run a scan and see what the new transparency regime already knows about your market.
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