What are the rules for public sector procurement?

Public sector procurement rules in the UK require public bodies to follow a structured, transparent, and competitive process when purchasing goods, services, or works above certain financial thresholds. These rules exist to ensure public money is spent fairly, efficiently, and in a way that delivers genuine value. The specific legislation and procedures that apply depend on the type of organisation, the nature of the contract, and its total value.

Who does public sector procurement law apply to?

Public sector procurement law applies to contracting authorities, a broad category of public bodies that includes central government departments, local authorities, NHS trusts, schools, universities, housing associations, emergency services, and other bodies governed by public law. If an organisation is substantially funded by the public purse or exercises public functions, it is likely to fall within scope.

The definition of a contracting authority is deliberately wide. It captures not only traditional government bodies but also utilities providers operating in sectors such as water, energy, transport, and postal services, which are subject to their own separate regulatory regime. Charities and third sector organisations that receive significant public funding may also find themselves bound by procurement obligations, particularly when managing publicly funded contracts on behalf of commissioners.

Private organisations acting as sub-contractors to public bodies are generally not directly subject to public procurement law, though they must comply with any obligations passed down through the contract terms set by the contracting authority.

What legislation governs public sector procurement in the UK?

The primary legislation governing public sector procurement in the UK is the Procurement Act 2023, which came into force in February 2025 and replaced the Public Contracts Regulations 2015 (PCR 2015) for most contracting authorities in England, Wales, and Northern Ireland. Scotland operates under its own framework through the Public Contracts (Scotland) Regulations 2015, though reform is also underway there.

The Procurement Act 2023 represents the most significant overhaul of UK public procurement law since the country’s departure from the European Union. It introduces a simpler set of procedures, a stronger emphasis on delivering value for money and public benefit, and greater flexibility for contracting authorities to design procurement processes that suit their specific needs.

Alongside the Procurement Act, several other regulatory instruments remain relevant depending on the sector and contract type:

• Utilities Contracts Regulations 2016: apply to utility sector contracting authorities
• Concession Contracts Regulations 2016: govern the award of concession contracts
• Defence and Security Public Contracts Regulations 2011: cover sensitive defence and security procurement

For organisations that ran procurements before February 2025, the PCR 2015 framework still applies to those legacy processes, so familiarity with both regimes remains important during the transition period.

What are the financial thresholds that trigger procurement rules?

Financial thresholds determine when a public body must follow the full formal procurement rules set out in the Procurement Act 2023. In 2026, the thresholds for central government authorities are approximately £139,000 for goods and services and £5.37 million for works contracts. Sub-central authorities, such as local councils, NHS trusts, and universities, face a higher goods and services threshold of approximately £214,000.

These figures are reviewed periodically and uplifted in line with international trade agreements. Contracting authorities should always verify the current thresholds against official government guidance rather than relying on historical figures.

Contracts below these thresholds are not exempt from all rules. Most public bodies are still required to follow internal standing orders, value for money principles, and any applicable sector-specific guidance. Many organisations apply a tiered approach, requiring competitive quotations for lower-value purchases and more structured mini-competitions or tender processes as contract values increase.

It is also important that contracting authorities do not artificially split contracts to bring them below threshold; this is explicitly prohibited and can constitute a breach of procurement law.

What procurement procedures must public bodies follow?

Under the Procurement Act 2023, contracting authorities must use one of the defined procurement procedures when awarding contracts above the relevant thresholds. The main procedures are the open procedure, the competitive flexible procedure, and the limited tendering procedure for specific exceptional circumstances.

Open procedure

The open procedure allows any supplier to submit a tender in response to a published contract notice. It is the most transparent route and is well suited to straightforward procurements where the requirements are clearly defined. All compliant tenders must be evaluated against the published award criteria.

Competitive flexible procedure

The competitive flexible procedure gives contracting authorities greater freedom to design a process that fits the complexity of the requirement. It may involve stages such as pre-qualification, dialogue, negotiation, or iterative tendering. This procedure is particularly useful for complex or innovative contracts where the specification cannot be fully defined at the outset.

The limited tendering procedure is reserved for narrow, defined circumstances: for example, where extreme urgency exists, where only one supplier is capable of delivering the requirement, or where a follow-on contract is being awarded to the same supplier for technical reasons. Contracting authorities must be able to justify using this route and should document their reasoning carefully.

What are the transparency and publication obligations?

Public bodies are required to publish a range of notices throughout the procurement process. Under the Procurement Act 2023, these obligations are more extensive than under the previous regime. Key publication requirements include a planned procurement notice, a tender notice, an award notice, and a contract details notice after the contract is signed.

All notices must be published on the Find a Tender Service (FTS), the UK’s official procurement publication platform. This replaced the EU’s Official Journal (OJEU) system following Brexit and serves as the central repository for above-threshold procurement opportunities across the public sector.

The Procurement Act also introduces new requirements around transparency in contract management. Contracting authorities must publish key performance indicators for significant contracts and report publicly on supplier performance against those indicators. This marks a meaningful shift toward greater accountability throughout the life of a contract, not just at the award stage.

Failure to publish required notices, or publishing them late, can expose a contracting authority to legal challenge and may invalidate an award decision.

What happens when a public body breaches procurement rules?

When a public body breaches procurement rules, it faces a range of consequences including legal challenge from aggrieved suppliers, contract suspension, financial penalties, and reputational damage. Suppliers who believe a contracting authority has acted unlawfully can bring a claim in the High Court, and the court has the power to set aside an award decision, award damages, or require the authority to re-run the process.

The Procurement Act 2023 strengthens the remedies available to unsuccessful suppliers during the standstill period, the mandatory pause between notifying bidders of an award decision and signing the contract. This period gives suppliers time to review the outcome and, if necessary, seek an automatic suspension of the contract award while a legal challenge is considered.

Beyond formal legal action, breaches of procurement compliance can trigger scrutiny from audit bodies, parliamentary committees, and regulators. For NHS trusts, local authorities, and central government departments, non-compliance can result in findings of maladministration or referrals to the National Audit Office.

The reputational consequences of a failed procurement are often as significant as the legal ones. Public organisations that mismanage a tender process may find it harder to attract quality suppliers in future, and the cost of re-running a procurement can be substantial.

How eXceeding helps with public sector procurement compliance

eXceeding works with public sector organisations across the UK to ensure their procurement activity is compliant, competitive, and structured to deliver genuine value. Whether you are navigating the Procurement Act 2023 for the first time, running a complex tender, or managing the transition to a new supplier, eXceeding’s consultants bring the expertise to keep your procurement on track.

• End-to-end tender management from strategy through to award, designed to meet all publication and procedural obligations
• Compliance reviews to identify and address gaps in your current procurement approach
• Specialist support for complex or high-value contracts across public sector categories
• Resourcing of experienced interim procurement professionals when internal capacity is stretched
• Independent advice untied to any supplier, system, or framework

If your organisation needs support navigating public procurement law or running a compliant tender process, get in touch with eXceeding to speak with one of our procurement consultants.

Related Articles

• How do you ensure TUPE compliance in a public sector procurement?
• When is it lawful to sole-source a contract in the public sector?
• What is a managed procurement service?
• Is procurement outsourcing right for your organisation in 2026?
• What is the difference between procurement and purchasing?