The Procurement Act 2023 came into force on 24 February 2025 and replaced the Public Contracts Regulations 2015 as the rulebook for most UK public sector buying. For suppliers, five changes matter most: you register once on the Central Digital Platform instead of re-entering company data portal by portal, buyers now score bids as Most Advantageous Tender rather than lowest headline price, large authorities must publish pipeline notices showing what they intend to buy, a formal debarment regime can exclude poor performers, and every unsuccessful bidder is owed an assessment summary explaining the decision. This guide walks through each change and what to do about it.
What changed, and when
The Act received Royal Assent in October 2023 and went live on 24 February 2025 after a delay from the original October 2024 date. Procurements started before go-live continue under the old rules, so you will still occasionally meet PCR 2015 terminology in long-running frameworks. Anything advertised since early 2025 runs under the new regime: new notice types, new procedures and new duties on buyers.
Register once on the Central Digital Platform
The Central Digital Platform (CDP) is the single front door for UK public procurement. You enter your core supplier information once: company identifiers, economic and financial standing, connected persons, and the exclusion grounds declarations. Buyers then pull that record instead of asking you to retype it in every tender. Two practical notes. First, keep the record current, because a stale declaration can trip you at condition-of-participation checks. Second, the platform is where pipeline and tender notices surface, so a complete profile doubles as a discovery feed.
MAT: how scoring actually changed
The award test moved from Most Economically Advantageous Tender (MEAT) to Most Advantageous Tender (MAT). The one-word change is deliberate: it tells evaluators they may weight quality, social value, resilience and delivery confidence without apologising for not choosing the cheapest bid. For bid teams this means the quality narrative carries more of the score. Generic capability statements score poorly under MAT; evidenced claims tied to the buyer's stated outcomes score well. Structure your executive summary around the buyer's award criteria, not your company history. We cover the structure in detail in our MAT executive summary guide.
Pipeline notices: see work before it is advertised
Authorities with significant spend must publish pipeline notices setting out planned procurements for the next 18 months. This is the single most under-used supplier benefit in the Act. A pipeline entry gives you months of lead time to position, meet the buyer at market engagement, line up case studies and pre-qualify partners, instead of discovering the tender when the clock is already running. Make reviewing pipelines a monthly habit, or use a monitoring tool that does it for you.
Transparency data you can use
The Act requires far more publication than the old regime: contract details notices, KPI performance for larger contracts, and contract change notices. As a supplier this is competitive intelligence. You can see who holds a contract, when it expires, how it is performing and what it is worth, then time your approach for the re-procurement. Our note on the 2026 transparency rules covers where each notice type lives, and the April 2026 threshold and KPI update has the current threshold figures.
Exclusions and the debarment list
The Act created a central debarment list and sharper exclusion grounds, including poor past performance. The practical discipline for suppliers: answer exclusion questions accurately, disclose what must be disclosed, and treat self-cleaning seriously if you have a past issue, documenting the remedial steps. Misrepresentation is now one of the fastest routes to losing a contract you already won. Our piece on recent disqualification cases shows how quickly buyers act on inaccurate bids.
Assessment summaries: free feedback, every time
Unsuccessful bidders must receive an assessment summary explaining how their tender scored against the winner. Read every one, log the themes, and feed them into the next bid. Across a year of bidding these summaries amount to a paid-for consultancy report on your own weaknesses. If your team does not have a structured place to store and search them, that is the first process gap to fix.
A supplier checklist for the Act
1. CDP registration complete and reviewed quarterly. 2. Pipeline notices from your top ten target authorities reviewed monthly. 3. Bid library evidence mapped to MAT-style quality criteria, not just price. 4. Exclusion and connected-persons declarations kept accurate. 5. Every assessment summary logged and themed. 6. Contract expiry dates of incumbent competitors tracked for re-procurement timing.
Where software fits
Most of the checklist above is reading and cross-referencing at volume, which is exactly what procurement software should do for you. Lucius AI monitors UK notices, checks eligibility against your profile, and builds compliance matrices from tender documents with page-level citations. You can analyse a tender document free, without creating an account, or see how the AI tender writing workflow handles the drafting side.
Disclosure: this guide is published by Lucius AI, which builds AI bid and tender software. Reviewed July 2026; next scheduled review October 2026. Threshold figures change: always confirm current values on the official Find a Tender service.
Does the Procurement Act 2023 apply to my existing framework?
Procurements started under PCR 2015 continue under the old rules until they conclude, including call-offs under frameworks let before February 2025. New frameworks advertised after go-live run under the Act.
Do I have to register on the Central Digital Platform to bid?
For procurements under the Act, buyers expect your core supplier information to come from the CDP record, so in practice yes: register once, keep it current, and reuse it across bids.
What is the difference between MEAT and MAT?
MEAT anchored evaluation to economic advantage. MAT drops the word economic, confirming buyers may weight quality, social value and delivery confidence as heavily as price where the award criteria say so. Your evidence has to earn those quality marks.
How do I find pipeline notices?
They are published through the Central Digital Platform and surfaced on Find a Tender. Search by the authorities you care about, or use a monitoring tool that alerts you when a pipeline entry matches your profile.
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