What is a PQQ (Pre-Qualification Questionnaire)?
A pre-qualification questionnaire (PQQ) is a formal document that a public sector buyer uses to assess whether a supplier is capable of delivering a contract before inviting them to submit a full tender. It is concerned not with what you are proposing to deliver or at what price, but with whether you are a suitable organisation to be considered at all.
PQQs sit at the selection stage of a procurement process, which is legally and practically distinct from the award stage. At selection stage the contracting authority asks: is this supplier capable, financially stable, legally compliant, and free from exclusion grounds? Only suppliers who pass receive an invitation to tender (ITT), where the focus shifts to the proposed solution and price.
A brilliant technical proposal cannot rescue you if your financials are too thin or your health and safety record raises red flags at selection stage. The two stages must be prepared for separately.
The Selection Questionnaire (SQ): Standardising the Process
Historically, each contracting authority wrote its own PQQ, meaning suppliers faced dozens of slightly different questionnaires asking for the same information in different formats. The Crown Commercial Service addressed this in 2016 by introducing the Selection Questionnaire (SQ), a standardised template adopted across central government and widely used by local authorities and other public bodies. The SQ brought consistency to the questions asked, the supporting evidence required, the pass/fail thresholds for financial checks, and the self-declaration format for exclusion grounds.
In practice you will still hear PQQ and SQ used interchangeably, particularly by buyers who pre-date the reform. The underlying logic and sections are the same; only the name differs.
How the Procurement Act 2023 Changes the Picture
The Procurement Act 2023, which came into force in February 2025, replaces the Public Contracts Regulations 2015 and drops the phrase PQQ entirely. Instead, it refers to conditions of participation assessed at the selection stage. Contracting authorities must ensure those conditions are proportionate to the nature and value of the contract, limited to what is genuinely necessary, and applied consistently.
The Act also strengthens exclusion ground rules, adding new mandatory exclusions for labour market offences and environmental violations. The self-declaration you make at selection stage now carries explicit legal weight under the Act's exclusion framework. In practice you will still receive a questionnaire; the content will look familiar, but buyers are required to apply a stricter proportionality test to what they demand of suppliers.
Typical Sections in a PQQ or Selection Questionnaire
While the exact structure varies by buyer and contract, most PQQs cover the following areas.
Company Details and Legal Status
Registered name, company number, address, legal structure, and the nature of your business. Simple to complete, but discrepancies between what you declare and Companies House records create doubt.
Financial Standing
Buyers typically review the last two or three years of audited accounts and apply a turnover test, often requiring annual turnover to be at least equal to, or a multiple of, the estimated contract value. They may also assess net assets, profitability, and liquidity ratios. If your financials fall below the threshold, a parent company guarantee or performance bond may allow you to proceed.
Insurance
Standard requirements include employer's liability insurance (a UK legal minimum of £5 million), public liability insurance (commonly £1 million to £10 million depending on contract risk), and professional indemnity insurance for service contracts. Check your policy limits against the contract before completing a PQQ.
Health and Safety
For contracts involving physical work or on-site presence, buyers require a director-signed health and safety policy, evidence of your risk assessment arrangements, and accident statistics for the past three years. For smaller, lower-risk contracts a brief policy and statement of approach will usually suffice.
Quality Management
ISO 9001 certification is widely accepted as evidence of a quality management system. If you are not certified, describe your quality processes and give examples of how you monitor performance. Buyers at selection stage want evidence of a system, not perfection.
Technical Capability and References
You will typically need two to four case studies from the past three to five years, matching the scope, scale, and type of the contract being tendered. Strong references from named contacts at the buyer organisations you cite carry real weight. Keep these current; stale references from contacts who have left slow down verification.
Exclusion Grounds
You must declare whether your organisation or any person with powers of control has been convicted of or is under investigation for serious offences. Mandatory exclusion grounds include fraud, corruption, money laundering, tax evasion, modern slavery, and terrorist financing. Discretionary grounds include insolvency, misrepresentation, and grave professional misconduct. A mandatory ground is a bar unless you can demonstrate sufficient self-cleaning measures; a discretionary ground requires a proportionate judgement by the buyer.
The Common Assessment Standard and Constructionline
The construction and infrastructure sector has its own answer to PQQ duplication: the Common Assessment Standard (CAS), developed by Build UK and the Civil Engineering Contractors Association, which consolidates core selection criteria into a single assessed standard that multiple buyers accept.
Constructionline is the largest UK provider of CAS-accredited assessments. Gold or Platinum membership is accepted by many public sector construction buyers in lieu of completing the equivalent PQQ sections from scratch. If your business regularly bids for construction, maintenance, or facilities management contracts, Constructionline membership converts a recurring administrative burden into a single annual assessment.
Building a Reusable Answer Library
The most time-efficient thing a supplier can do is build a pre-qualification answer library: a structured folder of approved, up-to-date answers and supporting documents that can be adapted for each new PQQ rather than written from scratch.
A well-maintained library should include a company profile in short and long versions, standard answers for each SQ section approved by a director, two to four case studies with client name, contract value, duration, scope, outcome, and a reference contact, current insurance certificates with renewal dates tracked, a director-signed health and safety policy, your quality policy and any ISO certificates, recent audited accounts, and equality and environmental policies.
Assign one person to own this library and set quarterly calendar reminders to review and refresh documents before they expire. A PQQ submitted with an out-of-date insurance certificate is a preventable failure.
Common Reasons Suppliers Fail at Selection Stage
Understanding why bids are rejected at PQQ stage helps you avoid the same pitfalls.
- Turnover too low. If your annual turnover is below the buyer's required multiple of contract value you will be screened out. A consortium arrangement, subcontracting structure, or parent company guarantee can sometimes address this.
- Incomplete declarations. Missing signatures, undated policies, or blank mandatory fields result in automatic disqualification at many authorities.
- Weak or irrelevant case studies. References that do not match the scope or scale of the contract give buyers no confidence. Tailor your examples to the opportunity.
- Expired documents. Lapsed insurance certificates, accounts more than eighteen months old, or health and safety policies not reviewed recently all undermine credibility.
- Undisclosed exclusion grounds. Attempting to conceal a relevant conviction or insolvency event is a serious matter. Disclose proactively and provide a self-cleaning statement that demonstrates the issue has been resolved.
- Poor financial ratios. Even if you meet the turnover threshold, persistent losses or a negative net asset position may trigger a risk flag. Prepare a brief narrative explanation if your accounts require context.
Use TenderSignal to Stay Ahead of the Pipeline
PQQ preparation rewards suppliers who plan ahead. The worst time to discover that your insurance limit is too low or your accounts are out of date is the day a PQQ lands in your inbox with a two-week deadline.
TenderSignal monitors over 145 UK procurement sources and surfaces relevant opportunities early, including contract notices, prior information notices, and pipeline signals. By finding contracts at notice stage rather than when the ITT drops, you gain the time to prepare your pre-qualification documents properly, research the buyer, and decide whether to invest in a full bid.
Set up a saved search for your CPV codes and sectors, and let TenderSignal bring the relevant opportunities to you. Start with a free account and upgrade to Pro for daily alerts and AI-scored matches.