Quick answer: Most public sector supplier days are thinly disguised procurement briefings that tell the market what you plan to buy, not what suppliers need to know to compete. Genuine market engagement means going earlier, asking harder questions, and being willing to hear uncomfortable answers.
The problem is structural, not accidental
I have sat through dozens of supplier days as both host and attendee. The format is depressingly familiar: a PowerPoint deck explaining the authority's strategy, a brief from legal reminding everyone what cannot be said, a Q&A where nobody asks anything useful because there are forty people in the room, and a buffet lunch.
Everyone ticks the box. Nobody changes anything.
The Procurement Act 2023 reinforces the case for genuine preliminary market engagement — it is explicitly referenced in the new frameworks around transparency and supplier involvement. But the Act cannot fix a cultural problem. If your team treats supplier days as a compliance exercise, they will keep producing compliance-exercise outputs.
What early market engagement is actually for
Done properly, market engagement before a procurement has three distinct purposes that most organisations conflate or skip entirely.
First, it tests your assumptions about the market. You think there are twelve credible suppliers. There may be four, or thirty, depending on how you structure the requirement. You will not find that out from a desktop exercise.
Second, it surfaces capability gaps you can actually do something about. If SMEs are struggling to meet your insurance thresholds, your cyber security questionnaire, or your payment terms, you have time to adjust before the ITT goes out. After it goes out, you are committed.
Third, it signals the kind of buyer you are. Markets have long memories. If you engage seriously, listen, and demonstrably act on what you hear, you will get better responses, better competition, and better value. That is not a soft benefit — it compounds over contract cycles.
Go earlier than feels comfortable
The most common mistake is timing. Supplier engagement that happens six weeks before contract notice is not market development — it is advance notice. By that point your specification is largely fixed, your evaluation criteria are drafted, and your team is focused on getting the paperwork right.
Useful engagement happens twelve to eighteen months out for complex contracts. That is when you can genuinely influence the shape of the requirement based on what the market tells you. It is also when there is time to run structured supplier development activities if you identify gaps — whether that is around social value requirements, Carbon Reduction Plans, or the accreditation standards you intend to apply.
Structure the conversation properly
A one-way briefing is not engagement. If you want useful market intelligence, design the session to extract it.
Run separate sessions for different supplier tiers rather than one large open event. Prime contractors will tell you nothing useful in front of their subcontractors and vice versa. SMEs in particular need a format where they are not drowned out by larger voices.
Prepare specific questions in advance and share them beforehand. Ask suppliers what the barriers to bidding look like from their side. Ask what contract terms cause them to price in risk. Ask which parts of your standard requirements add cost without adding value. Most suppliers will tell you, if you make clear you are genuinely asking.
Document what you hear and, critically, tell the market what you did with it. A short market engagement summary published alongside the procurement notice — explaining what you heard and what you changed as a result — is one of the most straightforward trust-building acts available to a contracting authority. It is also increasingly expected under the transparency principles embedded in the 2023 Act.
Connect engagement to your development programme
Market engagement and supplier development are not separate workstreams. They should be the same conversation.
If your engagement reveals that a significant portion of your potential supply chain cannot currently meet your net zero or social value requirements, that is a development brief, not a reason to lower standards. Use the lead time you have built in to run targeted support — whether through your own team, a portal like this one, or in partnership with other contracting authorities procuring in the same market.
Authorities that do this well consistently report stronger competition, fewer non-compliant submissions, and better contract performance. The mechanism is not mysterious: suppliers who understand what is required and have had support to meet it perform better than suppliers who are guessing.
The practical takeaway
Book the supplier engagement session eighteen months before your next major procurement, not six weeks. Prepare questions, not slides. Publish a summary of what you heard. If you find capability gaps, treat them as a development task with a timeline — not a problem to design around. The investment is modest. The difference in what comes back through the tender box is not.