Responding to corporate RFPs and PQQs

Last reviewed: 29 July 2026

The short answer

A private sector Request for Proposal, or RFP, and its earlier stage, the Pre-Qualification Questionnaire or PQQ, look similar on the page to their public sector equivalents, but the rulebook behind them is different. There is no Procurement Act 2023, no mandatory social value weighting, and no statutory transparency requirement governing how a private company runs its buying process. A corporate buyer sets its own process, its own criteria, and its own timescale, and can change any of it without the legal constraints a public authority faces. For a supplier, that means the discipline of answering the question asked and evidencing every claim still applies, but so does a different skill: reading an unwritten process, building the relationship that shapes the requirement before it is even issued, and understanding that price, delivery risk and commercial flexibility often carry more weight than they would in a public sector score.

None of this makes private sector bidding easier than public sector work. It is different, and the suppliers who do well in both worlds are the ones who recognise which set of rules they are actually operating under before they start drafting.

How private sector procurement differs

The single most important thing to understand about private sector procurement is what does not apply. The Procurement Act 2023, which went live on 24 February 2025, and the Procurement Policy Notes issued under it, including PPN 002 on social value, apply to public contracting authorities buying under UK public procurement law. A private company buying goods or services from a supplier is not a contracting authority in that sense, and its purchasing decisions are governed by ordinary contract law and whatever internal process it chooses to follow, not by the Act.

The practical consequences run in both directions. On one hand, there is no statutory minimum social value weighting, no mandatory transparency notices, and no Central Digital Platform equivalent, so you will not find a Find a Tender listing for most private sector opportunities; they are usually found through direct relationships, sector networks, referrals, or a company's own supplier portal. On the other hand, a private buyer has far more discretion. It can shortlist informally, negotiate terms after the RFP closes in ways a public buyer restricted by equal-treatment obligations cannot, change its requirement mid-process, or simply decide not to award at all. Understanding that the buyer is not bound by the same procedural fairness obligations changes how you should read every stage of the process.

The PQQ in the private sector

The term Pre-Qualification Questionnaire predates its public sector usage and remains common in corporate procurement as a vendor onboarding and due diligence stage. Before a private buyer will invite you to bid, or add you to an approved supplier list it draws on for future opportunities, it typically wants to establish a baseline of trust: that you are financially stable enough to deliver, adequately insured, able to evidence relevant past performance, and, depending on the category, able to demonstrate sound data handling and business continuity practices.

A private sector PQQ is rarely as standardised as a public sector Selection Questionnaire. Some corporate buyers use a short online form; others run a full due diligence pack covering financial accounts, references from named contacts who may actually be called, and detailed policy documentation. Treat every question as a genuine screening criterion rather than a formality: private buyers who find gaps or inconsistencies at PQQ stage often simply decline to progress a supplier to the RFP, with no formal debrief process obliging them to explain why.

The RFP stage: what is actually scored

Once you clear the PQQ or vendor onboarding stage, the RFP is where the competition is genuinely decided. Corporate RFPs vary enormously in format, from a short structured document with defined questions to an open brief asking suppliers to propose their own approach, but most are evaluated against some form of internal weighted matrix, even where that matrix is never shown to bidders. The discipline that wins public sector bids applies here too: answer the specific question asked, structure your response so a reader can find the answer to each element quickly, and back every claim with a specific, checkable example rather than a general statement about your company's capability. Where a private sector RFP differs is in how heavily commercial terms and delivery risk are usually weighted. Corporate buyers are frequently more willing than public buyers to negotiate scope, price and terms after the written response, so an RFP response that leaves room for a strong follow-up conversation, without underselling your value up front, often performs better than one that reads as a fixed, final position.

Building relationships before the RFP lands

Because private sector procurement has no equivalent of a published pipeline notice, the suppliers who consistently win corporate work are usually the ones who understood the requirement before it was formally issued. Many private buyers run informal market engagement: conversations with potential suppliers to understand what is available, what it costs, and how the market approaches a problem, well before an RFP document exists. Being present in those conversations, through account management, industry events, direct outreach, or an existing relationship with the buying team, lets you shape your understanding of what the buyer actually values ahead of a formal process, and often shapes the requirement itself in ways that favour suppliers who engaged early. This is not a substitute for a strong written response; it is preparation that makes the written response sharper, because you are answering a question you already understand rather than one you are reading for the first time on the day the RFP lands.

Common corporate evaluation criteria

While every private buyer sets its own weighting, the same broad categories recur across most corporate RFPs:

• Quality of approach. How well your proposed method fits the buyer's specific requirement, evidenced with relevant detail rather than generic capability statements.
• Price and commercial terms. Not just the headline number, but payment terms, flexibility, and total cost of ownership over the life of the relationship.
• Delivery capability and risk. Whether you can credibly resource and deliver at the scale and timescale required, and what happens if something goes wrong.
• References and track record. Private buyers frequently call references directly, more so than many public sector processes, so named referees who will genuinely vouch for your delivery matter more here than a general list of past clients.
• Relationship fit. A softer criterion than the others, but real: buyers are assessing whether they want to work closely with your team over the life of the contract, not only whether the proposal on paper is strong.

Common mistakes bidding private sector work

The errors that cost suppliers private sector opportunities are different in emphasis from public sector mistakes, though some overlap:

1. Treating the RFP like a public tender. Writing a rigid, formal response when the buyer would respond better to a more consultative, relationship-oriented proposal, or vice versa. Read the tone of the RFP document and the buyer's own communications before deciding your register.
2. Leaving no room to negotiate. Submitting a final, non-negotiable position when the buyer expects the written response to be a starting point for further discussion.
3. Skipping relationship-building. Waiting for the RFP to land before engaging, and competing against suppliers who understood the requirement weeks or months earlier.
4. Weak or unprepared references. Naming referees who are not briefed and ready to take a call, undermining a strong written response when the buyer follows up.
5. Assuming public sector rules apply. Citing statutory obligations, transparency requirements or social value weightings that simply do not bind a private buyer, which can read as a mismatch between your understanding and the process you are actually in.

If your organisation bids across both public and private work, the core writing discipline transfers directly: our guide to writing a method statement that actually scores covers the structure, evidence and risk content that strengthens a response in either sector. And if you are still building your public sector pipeline alongside private work, our guide to finding and winning your first UK public sector contract explains where public opportunities are advertised and how that process differs from what is described here.

Frequently asked questions

Do the same rules apply to private sector RFPs as public sector tenders?

No. The Procurement Act 2023 and related policy notes such as PPN 002 apply to public contracting authorities, not to private companies buying goods or services. A private sector RFP is governed by whatever process the buying company chooses to run and the contract terms it sets, not by statutory procurement law.

What is a PQQ in the private sector?

A Pre-Qualification Questionnaire in a corporate context is a vendor onboarding and due diligence stage, checking financial stability, insurance, references, data handling and, on regulated or higher-risk categories, compliance policies, before a supplier is invited to bid or added to an approved supplier list.

How is a private sector RFP scored?

Most corporate RFPs are scored against an internally weighted matrix similar in principle to public sector evaluation, typically covering quality of approach, price, delivery capability, risk and references, though the exact weighting and criteria are set entirely by the buying organisation and rarely published in full.

Should I build a relationship before an RFP is issued?

Yes, where you can do so appropriately. Private sector buyers often run informal supplier engagement or market conversations before a formal RFP, and a supplier who understands the buyer's priorities ahead of time can write a sharper, better-targeted response than one seeing the requirement for the first time.

Sources

• Procurement Act 2023, full text, legislation.gov.uk. Cited here to show the scope of what the Act covers, and by extension what it does not: private sector purchasing.
• Transforming Public Procurement, Cabinet Office guidance collection, gov.uk.