A comprehensive look at how small and medium businesses are navigating the UK's 300 billion pound public sector market, what is changing, and where the biggest opportunities lie.
Executive summary
The UK public procurement market is worth over 300 billion pounds annually. Government policy has repeatedly committed to increasing SME participation, with a target of 33% of central government spend going to small and medium-sized enterprises by 2025. Progress has been uneven, but the direction of travel is clear: the public sector wants more SMEs in its supply chain, and recent legislative changes are designed to make that happen.
This paper examines the current state of SMB participation in public procurement, the barriers that persist, and the practical opportunities available to smaller firms willing to invest in their bidding capability.
The market opportunity
Public procurement spans every sector of the economy. From IT services to construction, facilities management to professional consultancy, healthcare supplies to training provision, the breadth of goods and services purchased by government is vast. For SMBs, this diversity is an advantage. Unlike the private sector, where contracts are often awarded through informal relationships, public procurement follows structured processes that are, by design, open to competition.
Central government departments, NHS trusts, local authorities, police forces, universities, and arms-length bodies all procure through published tender processes. The Contracts Finder portal alone published over 45,000 contract notices in the 2024/25 financial year. Find a Tender, which covers higher-value contracts, published a further 12,000.
The Procurement Act 2023
The Procurement Act 2023, which came into full effect in February 2025, represents the most significant reform of UK public procurement in a generation. For SMBs, several provisions are particularly relevant.
First, the Act introduces a new "competitive flexible procedure" that gives buyers more discretion in how they structure procurements. This is intended to make it easier for buyers to engage with smaller suppliers who may not have the resources to navigate overly rigid processes.
Second, the Act strengthens transparency requirements. All contracts above 5,000 pounds must now be published on a central platform, giving SMBs greater visibility of opportunities that were previously hidden within departmental systems.
Third, the Act includes provisions to simplify supplier qualification. The aim is to reduce the burden of repetitive pre-qualification questionnaires, a long-standing frustration for SMBs who often complete near-identical forms for every tender.
Barriers that persist
Despite policy commitments and legislative reform, several barriers continue to limit SMB participation in public procurement.
Resource constraints. Writing a competitive tender response takes time, skill, and knowledge. SMBs with small teams often lack dedicated bid writers, meaning the work falls to directors or technical staff who are simultaneously managing delivery. The opportunity cost is significant.
Risk aversion among buyers. Some public sector buyers default to larger, established suppliers because they are perceived as lower risk. This is particularly true in sectors like IT and construction, where contract failures can attract media scrutiny. Breaking through this perception requires SMBs to demonstrate robust governance, financial stability, and a strong track record, all of which must be communicated effectively in bid responses.
Framework dominance. A growing proportion of public sector spend is channelled through framework agreements. While frameworks can provide SMBs with a steady pipeline once appointed, the application process is often complex and time-consuming. SMBs that are not on the right frameworks are effectively excluded from a large portion of the market.
Late payment. Cash flow remains a challenge. Although government policy requires 30-day payment terms, enforcement is inconsistent, and subcontractors in particular can face extended payment cycles that strain working capital.
Where the opportunities are
Despite these barriers, the data tells a positive story for SMBs willing to invest in their procurement capability.
Below-threshold contracts. Contracts below the regulated threshold (currently 139,688 pounds for goods and services) follow simpler procurement rules and are more accessible to SMBs. Many local authorities actively seek to award these contracts to local suppliers.
Social value-driven procurement. The growing emphasis on social value creates a natural advantage for SMBs that are embedded in their local communities. Large firms can make social value commitments, but SMBs can often demonstrate more authentic and measurable local impact.
Specialist and niche services. In areas requiring deep specialisation, such as cybersecurity, environmental consultancy, specialist engineering, or bespoke training, SMBs often outperform larger generalist firms. Buyers in these sectors are increasingly willing to award directly to specialist SMEs.
Dynamic purchasing systems. DPS arrangements allow new suppliers to join at any time, unlike frameworks which have fixed application windows. This makes them particularly attractive for SMBs that missed a framework deadline or are new to public sector bidding.
Recommendations
For SMBs looking to grow their public sector revenue, we recommend the following:
Invest in bid capability. Whether through training, recruitment, or technology, the quality of your tender responses is the single biggest lever you can pull. A well-evidenced, clearly structured, and tailored bid will always outperform a generic one.
Build an evidence library. Collect case studies, performance data, client testimonials, and outcome metrics from every contract you deliver. This library becomes the foundation for every future bid.
Be selective. Not every opportunity is worth pursuing. Develop a go/no-go framework that scores opportunities against your capability, capacity, and strategic fit. Bid less, but bid better.
Engage early. Use prior information notices, market engagement events, and buyer meet-the-supplier days to build relationships before tenders are published. Buyers want to hear from SMBs, but they need to know you exist.
Use technology wisely. Platforms like SupplierVerse can significantly reduce the time spent finding and qualifying opportunities, freeing up resource for the writing and review that wins contracts.