Public Sector Procurement Process UK: A Guide for Suppliers

Most suppliers start watching at the UK4 tender notice. The strongest bid teams start at the UK1/UK2/UK3 pipeline stages. How UK public sector procurement now works, stage by stage.

The public sector procurement process in the UK changed more in 2025 than at any point in the previous decade. If your team bids for public contracts, the rules that decide how opportunities are advertised, assessed and awarded now come from the Procurement Act 2023, and plenty of suppliers are still working from the old playbook.

Public sector buyers spend through a system. Suppliers who understand that system find opportunities earlier, qualify them faster and write responses that match how they will be scored. Suppliers who do not tend to discover tenders late and bid on the wrong ones.

This guide walks through how public sector procurement works today: the stages from pipeline to contract, the procedures buyers can use, how framework agreements and call-off contracts work, what replaced the DPS, and what suppliers can do at each stage to improve their chances.

How the Public Sector Procurement Process Works in the UK

The Procurement Act 2023 came into force on 24 February 2025. It replaced the Public Contracts Regulations 2015 and several related sets of rules with a single regime for public sector procurement in England, Wales and Northern Ireland. Scotland runs its own regime under the Public Contracts (Scotland) Regulations 2015, and Scottish opportunities are advertised on Public Contracts Scotland.

Two things sit at the centre of the new process. The first is the Central Digital Platform, run through the Find a Tender Service, where buyers publish notices and suppliers register their core business information once. The second is a much heavier emphasis on transparency. Buyers now publish notices at almost every stage of a contract's life, from early planning through to termination.

Thresholds decide which rules apply. From 1 January 2026, the main thresholds, all inclusive of VAT, are:

• £135,018 for goods and services bought by central government
• £207,720 for goods and services bought by other contracting authorities
• £5,193,000 for works contracts

Below those figures a lighter set of rules applies, but buyers still advertise many lower-value opportunities. One date matters this autumn. From 1 October 2026, under the Procurement (Amendment) Regulations 2026, procurements still running under the old 2015 rules stop publishing to Contracts Finder and move their notices to the Central Digital Platform. If your team checks Contracts Finder out of habit, now is the time to consolidate your searches.

For a fuller view of what changed in the legislation itself, read our guide to the Procurement Act 2023.

Where public sector opportunities are published

Above-threshold opportunities in England, Wales and Northern Ireland are published on the Central Digital Platform, so it should be the backbone of any search routine. It is not the only place to look. Welsh buyers also use Sell2Wales, and Scottish buyers advertise on Public Contracts Scotland. Many authorities run the tender itself through an e-sourcing portal such as JAGGAER, Delta, Atamis or In-Tend, which is where you download documents, ask clarification questions and submit your response. Knowing which portal each of your target buyers uses saves a scramble on day one of a tender.

The Stages of the Public Sector Procurement Process

Every procurement is different, but most follow the same broad sequence. Each stage now comes with its own notice on the Central Digital Platform, which means each stage is also a signal suppliers can watch for.

1. Pipeline (UK1). Buyers expecting to spend more than £100 million in a financial year must publish a pipeline notice listing the contracts of £2 million or more they plan to award in the next 18 months.
2. Preliminary market engagement (UK2). Buyers can talk to the market before a procurement starts, to test requirements, shape the specification and check capacity. A preliminary market engagement notice tells suppliers it is happening.
3. Planned procurement (UK3). An optional planned procurement notice gives advance warning of a specific tender. Where a qualifying one has been published, the buyer can shorten the tendering period to as little as 10 days.
4. Tender (UK4). The tender notice opens the competition and sets out the procedure, the conditions of participation and the award criteria.
5. Assessment and award. Buyers assess tenders against the published criteria, give each bidder an assessment summary, and publish a contract award notice.
6. Standstill. Where a standstill applies, the award notice triggers a pause of at least 8 working days before the contract is signed, giving unsuccessful suppliers time to challenge the decision.
7. Contract and performance. A contract details notice follows award. For contracts worth £5 million or more, buyers also publish the redacted contract and report performance against key performance indicators at least once a year.

Why the early stages matter most

Most suppliers start paying attention at stage four. The strongest bid teams start at stage one. By the time a tender notice lands, the specification has been shaped, the timetable set and the evaluation criteria fixed. Suppliers who took part in pre-market engagement understand the buyer's priorities. Suppliers who arrive at the tender notice are reading them for the first time.

Pipeline and planned procurement notices are free early warning. Build a routine that reviews them, not just live tenders, and you will see the opportunities that matter months before your competitors start writing.

What the notices tell you after award

Award, contract details and performance notices are market intelligence. They show who won, at what value, and how incumbents are performing against their targets. Buyers also publish payments over £30,000 on many contracts, which shows how contracts are actually being spent. Together, that is the information you need to judge whether a re-tender is winnable before it is advertised.

Procurement Procedures: Open, Competitive Flexible and Direct Award

The Act cut down the menu of procedures buyers can choose from. A competitive tender now runs under one of two procedures.

The open procedure

The open procedure is a single-stage process. Any interested supplier can submit a tender, and the buyer assesses the tenders it receives against the published award criteria. It suits straightforward requirements where the buyer can specify exactly what it wants.

The competitive flexible procedure

The competitive flexible procedure lets the buyer design its own process. That can mean several stages, a shortlist of suppliers, negotiation, dialogue, demonstrations or site visits. It replaces several procedures from the old regime and gives buyers far more freedom. For suppliers, that means reading each procedure document carefully rather than assuming a familiar format.

Direct award

In limited circumstances, buyers can award a contract without competition, for example in cases of extreme urgency or where only one supplier can deliver. The buyer must publish a transparency notice before the contract is signed, so direct awards are visible even when they cannot be bid for.

How long suppliers have to respond

Minimum timescales depend on the route. Under section 54 of the Procurement Act 2023, the minimum tendering period for an electronic tender, where all the tender documents are available from the start, is 25 days. That rises to 30 days if the documents are not all provided at once, and can fall to 10 days in cases such as a qualifying planned procurement notice or a state of urgency. Light touch contracts, which cover certain health, social care and education services, have no minimum period at all.

For suppliers, 25 days is not long. A tender pack can run to hundreds of pages, and the clock starts when the notice is published, not when your team first sees it.

Framework Agreements and Call-Off Contracts

A large share of public sector procurement never appears as a standalone tender. It runs through framework agreements: contracts between one or more buyers and one or more suppliers that set the terms for contracts awarded later. Those later contracts are call-off contracts.

Under the Procurement Act 2023, a framework can last up to four years. It can run longer in defence and security or utilities, or where the buyer justifies a longer term in the tender notice. The Act also introduced open frameworks, which can run for up to eight years and must be reopened to new suppliers at set points, so missing a framework no longer has to mean missing four years of work.

How call-off contracts are awarded

Once a framework is live, named buyers can award call-off contracts to the suppliers on it in one of two ways:

• Without competition, where the framework has a single supplier, or sets out the terms of the contract and an objective way of choosing a supplier.
• With competition, through what the Act calls a competitive selection process. Most buyers and suppliers still call this a mini competition, and the government's own Framework Practice Guide uses both terms.

In a mini competition, the buyer can ask framework suppliers for supplementary information specific to that call-off. No public tender notice is needed, which means these opportunities are invisible unless you are on the framework.

Why framework strategy matters

If you are not on the framework, you cannot bid for its call-offs. Getting onto the right frameworks is a bid decision in its own right, and it deserves the same discipline as any single tender. Our bid/no-bid decision framework works just as well for deciding which frameworks to pursue.

Frameworks awarded under the old rules continue until they expire. There is no single end date for them, so for several years suppliers will be working across both regimes at once, and your team needs to know which rules each opportunity falls under.

Dynamic Markets: What Replaced the DPS

Under the old rules, many buyers used a dynamic purchasing system (DPS): an open list of qualified suppliers that could be joined at any time. The Procurement Act 2023 replaces the DPS with dynamic markets.

The principle is similar. Suppliers can apply to join a dynamic market at any point during its life, and buyers award contracts to its members. The difference is scope. Dynamic markets can be used for a wider range of goods, services and works than the old DPS.

Existing DPS arrangements set up under the 2015 rules have not disappeared overnight. According to the government's Framework Practice Guide, they end on 23 February 2029. Until then, suppliers will see opportunities from both, so keep your DPS memberships current while applying to new dynamic markets as they open.

Tracking pipeline notices, frameworks, dynamic markets and live tenders across several portals is a job in itself. BidScript brings public sector opportunity discovery, qualification and response writing into one place, so your team spends less time searching and more time writing.

How to Win Within the Public Sector Procurement Process

Understanding the process is the foundation. Winning inside it comes down to a handful of habits.

• Register on the Central Digital Platform early. You store your core supplier information once and share it with buyers using a share code. Do it before a deadline, not during one.
• Know the PSQ inside out. The Procurement Specific Questionnaire collects the supplier information buyers use in their assessment. Our guide to what a PSQ is covers what it asks and how to prepare.
• Read the conditions of participation. They replace the old selection criteria and set the minimum bar for things like financial standing and technical ability. Fail one and the rest of your bid may never be scored. Our explainer on conditions of participation goes into more detail.
• Write to the award criteria. Contracts are now awarded to the most advantageous tender (MAT), replacing the old "most economically advantageous tender". Quality, social value and price are scored against published criteria and weightings, so structure every answer around them.
• Use your assessment summaries. Win or lose, the buyer must explain how your tender was scored. Feed that learning back into your content library and your next bid.
• Qualify hard. The fastest way to raise your win rate is to stop bidding for contracts you were never going to win.

None of these habits are complicated. What makes them hard is consistency across dozens of bids a year, with deadlines overlapping and the same few people doing the writing. That is where a clear process, and the tools to support it, earn their keep.

Public Sector Procurement Process: FAQs

What is the public sector procurement process in the UK?

It is the set of rules public bodies follow to buy goods, services and works. In England, Wales and Northern Ireland it is governed by the Procurement Act 2023, in force since 24 February 2025. It runs from planning and market engagement through tendering, assessment and award to contract management, with notices published on the Central Digital Platform at each stage.

What is the difference between a framework agreement and a call-off contract?

A framework agreement sets the terms under which buyers can award contracts to a group of approved suppliers later. A call-off contract is one of those later contracts. Suppliers must win a place on the framework first. Call-offs are then awarded either directly, using an objective mechanism set out in the framework, or through a competitive selection process, often called a mini competition.

Does the DPS still exist?

Not for new arrangements. Under the Procurement Act 2023, dynamic markets replace the dynamic purchasing system. Suppliers can apply to join a dynamic market at any time during its life, and it can cover a wider range of goods, services and works. DPS arrangements set up under the old 2015 rules continue until they end on 23 February 2029.

What is a mini competition?

A mini competition is the common name for awarding a call-off contract under a framework through competition among the framework's suppliers. The Procurement Act 2023 calls it a competitive selection process. The buyer invites framework suppliers to respond, can ask for supplementary information specific to the requirement, and awards the call-off to the best response against its criteria.

How long do suppliers have to respond to a tender?

Under section 54 of the Procurement Act 2023, the standard minimum is 25 days for electronic tenders where all documents are available from the start, or 30 days if they are not. It can fall to 10 days in some cases, such as urgency or where a qualifying planned procurement notice was published. Light touch contracts have no minimum period.

Final Thoughts

The public sector procurement process in the UK is more transparent than it has ever been. Almost every stage now produces a notice, which means suppliers who know where to look can see opportunities coming months before a tender opens. The rules on frameworks, dynamic markets and direct award have changed, and the transition from the old regime will run for years yet.

The practical takeaways: watch pipeline and planned procurement notices, get onto the right frameworks and dynamic markets, register on the Central Digital Platform before you need to, and write every response to the published award criteria. When a procedure looks unfamiliar, the official Procurement Act 2023 guidance documents are the best reference.

BidScript is an AI-native bid management platform built for in-house work-winning teams, helping UK service businesses and contractors find, manage, write and win more public sector contracts. Book a demo to see how it fits your team's process.