Documents needed for public sector tenders: a UK checklist
By the companypolicies.ai team, published by Spire Trade Advisors Ltd · Published · Last updated · 8 min read
In short
A UK public-sector tender usually needs four groups of documents: your Central Digital Platform registration and share code; selection-stage evidence such as insurance, financial information, policies, certificates and contract examples; the tender response itself (quality answers, pricing and declarations); and, if you win, pre-contract documents such as insurance certificates and vetting. Preparing the reusable ones in advance saves most of the time.
Before you bid: registration
- Central Digital Platform registration and share code. For procurements under the Procurement Act 2023, your core supplier information lives on Find a Tender. See our registration guide.
- Buyer portal accounts. Most buyers run tenders through an e-tendering portal, which needs its own (free) supplier registration.
- Company details to hand: Companies House number, registered address, VAT number if registered, and details of directors and anyone with significant control ("connected persons").
Selection stage (PSQ): prove you are eligible and capable
Under the Act, buyers use the Procurement Specific Questionnaire and their own conditions of participation. Typical evidence:
| Document | Why it's asked for | Tips |
|---|---|---|
| Insurance details | Employer's liability, public liability and, for advice or design work, professional indemnity at levels the buyer sets | If your cover is lower, you can often commit to increase it on award; get a broker's quote ready |
| Financial information | Economic and financial standing: accounts, credit checks, sometimes turnover ratios | Keep the last two or three years' accounts as PDFs |
| Core policies | Evidence of how you manage risk and comply with law | Health and safety, EDI, data protection, modern slavery, environmental, anti-bribery, quality; signed and dated within 12 months |
| Certificates and accreditations | Conditions of participation may name ISO 9001, ISO 14001, ISO 45001, Cyber Essentials, an SSIP scheme or the Common Assessment Standard | Buyers should accept equivalents; explain yours if it isn't the one named |
| Contract examples | Technical ability: usually up to three relevant contracts with referees | Ask your referees first; new businesses can explain how they meet the requirement instead |
| Exclusions information | Mandatory and discretionary exclusion grounds for you, connected persons, associated persons and subcontractors | If something went wrong, document what you changed |
| Modern slavery statement | Required to publish at £36m+ turnover | Smaller suppliers usually provide a policy instead |
Tender stage: your response
- Quality (technical) answers to the buyer's scored questions, within word limits, often referring to your method statements and policies.
- Pricing schedule in the buyer's format.
- Social value commitments where scored (see social value in tenders).
- Carbon Reduction Plan for in-scope central government contracts above £5m a year (PPN 006).
- Forms and declarations such as the form of tender, conflict of interest and non-collusion declarations, and any requested CVs or organisation charts.
- Sector documents such as RAMS for works, or safeguarding and DBS arrangements for care and education.
If you win: before the contract starts
- Insurance certificates at the required levels.
- Staff vetting evidence where needed (for example DBS checks or security clearance).
- Signed contract, agreed KPIs and any mobilisation or implementation plan.
- For notifiable below-threshold contracts awarded from 1 April 2026, your Central Digital Platform unique identifier.
Build a reusable bid library
Most of these documents are the same for every bid. Keep current versions in one folder: policies, certificates, insurance, accounts, contract examples and short standard answers. Review them every year and whenever your business changes. To see which policies your sector and buyer usually ask for, run the free tender policy checker; to see what our policies are like, get a free tailored Whistleblowing policy.
Frequently asked questions
What documents are required for a tender submission?
Typically your Central Digital Platform share code, insurance details, financial information, the policies and certificates the buyer asks for, contract examples, your quality answers and pricing, and any declarations. The procurement documents list exactly what each buyer needs.
Do I need ISO certification to bid for public contracts?
Not by law. Some buyers name ISO 9001, ISO 14001 or ISO 45001 as conditions of participation, and should accept equivalent evidence. Many smaller contracts accept signed policies with evidence of how you apply them.
Can I bid without previous contract examples?
Often, yes. Questionnaires based on the government template let you explain why you have no examples (for example, you are a new business) and how you meet the technical requirements another way.
How long should I keep my bid documents current?
Review policies, certificates and insurance at least annually. Many buyers look for policies signed and dated within the last 12 months.
Related guides
Sources
- PA 2023 Procurement Specific Questionnaire template (Civil Service Procurement Pathway)
- Guidance: Central Digital Platform and publication of information (GOV.UK)
- Procurement Act 2023 guidance documents (GOV.UK)
- Modern Slavery Act 2015, section 54 (legislation.gov.uk)
Written and reviewed by the companypolicies.ai team at Spire Trade Advisors Ltd, using the official sources listed above; last checked 2 October 2026. General information, not legal advice. Procurement rules and guidance change, and individual tenders set their own requirements; always check the procurement documents and current GOV.UK guidance.