Competitive dialogue is the procurement route for contracts too complex to specify upfront. Where a buyer knows the outcome it needs but not the solution, it can’t just publish a fixed spec and ask for prices — so it talks to bidders first, develops the solution with them, and only then asks for final tenders. If you bid for complex or novel public work, you’ll meet it, though what it’s called now depends on where you bid.
When and why it’s used
A standard open or restricted procedure assumes the buyer can describe exactly what it wants. Competitive dialogue exists for when it can’t — typically:
- Large or complex IT and systems contracts
- Major infrastructure and PPP-style projects
- Innovative requirements with no established market solution
- Contracts where the technical, legal or financial structure has to be worked out with the market
The defining feature is collaboration: the authority and shortlisted bidders develop the solution together through structured dialogue before final bids are submitted.
How the stages work
In its classic EU/Irish form, competitive dialogue runs in stages:
- Notice and selection. The authority advertises and shortlists bidders against selection criteria (capability, experience, financial standing).
- Dialogue. The authority holds successive rounds of confidential dialogue with each shortlisted bidder, exploring and refining possible solutions. Bidders may be progressively reduced across rounds (“down-selection”).
- Final tenders. Once solutions are sufficiently developed, the authority closes dialogue and invites final tenders based on the solutions discussed.
- Award. Final tenders are evaluated against the published award criteria, and the contract is awarded on the most advantageous basis.
Two principles run throughout: confidentiality — the authority can’t share one bidder’s solution with another — and equal treatment — all bidders get fair, even-handed engagement.
What changed in the UK under the Procurement Act 2023
This is the part that trips suppliers up. Under the old EU-derived rules (and still in Ireland and the EU), competitive dialogue is one of several distinct named procedures. The UK’s Procurement Act 2023, in force since 24 February 2025, swept those away.
The Act reduced the old six procedures to two competitive routes: the open procedure and the new competitive flexible procedure. There is no longer a distinct “competitive dialogue” procedure in the UK. But the mechanics survive — the competitive flexible procedure lets a contracting authority build dialogue, negotiation, demonstrations and multiple stages into a bespoke process. In practice, a UK buyer running a complex procurement can design a competitive flexible procedure that looks very much like the old competitive dialogue.
So, depending on where you’re bidding:
- Ireland / EU: competitive dialogue is a distinct procedure, available for particularly complex contracts.
- UK (England, Wales, NI): no standalone competitive dialogue, but its dialogue-and-develop approach can be replicated inside the competitive flexible procedure.
- Scotland: operates under its own procurement regime — check its rules.
(For the wider vocabulary, see public procurement terminology.)
How to bid well in a dialogue process
A dialogue procedure rewards different behaviours from a one-shot tender:
- Engage genuinely in dialogue. This is your chance to shape the solution toward your strengths. Bidders who hold back lose the advantage the process exists to give.
- Protect your IP and your differentiators. Dialogue is confidential, but be deliberate about what you reveal and when. Your best thinking is an asset, not small talk.
- Track the moving requirement. The solution evolves across rounds; keep your understanding — and eventually your final tender — aligned with where the dialogue actually landed.
- Resource it properly. Dialogue is time-intensive over weeks or months. Factor that cost into your bid/no-bid decision before you commit.
- Win on the final tender. However collaborative the dialogue, the contract is awarded on your final tender against the published criteria — so all the usual scoring discipline still applies. (See how panels score quality.)
The takeaway
Competitive dialogue is the public sector’s mechanism for buying things it can’t specify in advance — collaborative, staged, and confidential. Just know which version applies to you: a named procedure in Ireland and the EU, and a flavour of the competitive flexible procedure in the UK. Either way, the dialogue shapes the solution, but the final tender wins the contract.
Heading into final tenders? Before you submit, see how your response scores against the published criteria with BidReview’s free scorecard. Start free →
