Official UK procurement notice
Greener Whitchurch Flood Alleviation Scheme Construction - Preliminary Market Engagement Notice
Authority: Cardiff Council (Central government)
What is being bought
Published requirement descriptionThe Ordinary Watercourse known as the Whitchurch Brook flows through the centre of Whitchurch and has been identified by CCC as one of four Ordinary Watercourses in Cardiff posing a significant flood risk to the city. The brook flows from Thornhill south through Whitchurch for approximately 2.5km with its lower 0.85km length from Heol Gabriel culverted until its outfall at the River Taff.
There are extensive examples of fluvial and surface water flooding across the Whitchurch Brook catchment, and this flood alleviation scheme consists of:
- Discharge of Pre Commencement Planning Conditions
- Production of documents to gain Ordinary Watercourse Consent Approval
- Construction of Rain Gardens
- Remedial Works to Caedelyn Park attenuation basin
- Construction of watercourse flood walls
- Construction of flood embankments
- Highway improvements
- Interaction with Utilities
- Significant stakeholder engagement
- Significant Traffic Management
- Liaison with client project team
The Client is seeking to appoint a preferred contractor, based on a set of performance specifications and briefing documents (Client Scope). At this stage the final RIBA Stage 4 designs are to be further appraised and developed and the project is subject to funding confirmation.
The main objective of this PME is to determine market engagement and understand the markets appetite, capacity and capability to deliver large scale flood alleviation schemes.
Contract Value and Programme
This scheme is subject to the approval of internal and external (The Welsh Government) funding applications. The Full ITT documents are proposed to be issued Q3 2026.
Market Engagement Process
Interested suppliers are invited to:
Attend an online briefing at 10am on 14th November. A maximum of 2 members per organisation will be permitted to attend. Please submit the name and email address of the people you would like to attend the online supplier briefing through the messages tab on the Proactis Portal.
Submit expressions of interest via the Proactis Portal by 12:00:00 (noon) on Friday 7th November 2025.
CPV: Construction work
The lotProcurement structure
single lot · no lot value publishedPipeline intelligence · planning stage: how this market runs before the tender is published
How Cardiff Council buys Construction work (CPV 45), and who usually turns up
Cardiff Council’s own published record, next to the published market for the same work. Frameworks and DPS are kept out: they attract a different number of bids. Whole-market view: Construction work (CPV 45) →
How the contest usually goes
Winner shares use published awards; bid and price charts use contested lots.
i
How often small and medium firms win.
Share of awards where the winner’s size is known.
The counts under this question show how many awards have a known supplier size.
Small firms have won here. Neither number says whether you qualify; it describes who has been winning.
i
How often local firms win similar work.
Winners with a registered address in the delivery region, out of awards with a known address.
Here, local means registered in Wales (Cymru).
A local branch does not count if the registered address is elsewhere.
Most of this buyer’s recorded winners are registered in Wales (Cymru).
i
How long buyers here take to decide after bids close.
Middle value in days from the deadline to the first award notice, on competitions that published both dates.
Only decided tenders count, so slow ones still waiting are not in.
Half of these awards were announced within 74 days of the bid deadline.
i
How often work is awarded with no recorded rival.
Direct awards and tenders where every published lot count shows one bid.
Both shares are minimums: some awards have no bid count.
Thin markets produce this too; it is not proof of a tailored specification.
Direct awards or one recorded bid are common here. Check the route before spending time on a bid.
How many bids did past lots attract?
i
How many bids past lots received.
Each colour is a bid-count range. Only competed lots with a published count are included.
Past bids do not predict this tender.
1 bid13% / 14%
2–346% / 38%
4–638% / 34%
7+4% / 14%
How did awards compare with estimates?
i
Where winning prices landed against estimates.
Each colour shows awards below, close to or above the published estimate, one lot at a time.
Past prices are a guide, not a bid price.
Below estimate48% / 54%
Within ±2%24% / 22%
Above estimate29% / 23%
Assess each lot i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
Open a lot for its forecast, this buyer’s previous supplier and possible competitors, from published award history, not a bid list
Lot #1Published estimate£15m
i
How many bids this lot may attract.
The forecast uses similar past competitions. The bar shows either that forecast or past bid counts; the line below says which.
Each lot shows its own forecast based on its own category; forecasts for different lots of the same notice are not comparative. The bar shows 118 past lots.
A forecast, not a list of bidders.
1 bid14%
2–338%
4–634%
7+14%
i
Where the award price may land.
The forecast uses similar awards and the buyer’s estimate. The band covers the middle half of likely prices.
No comparable awards for this lot yet.
A statistical guide from past awards, not a price to bid.
Who has supplied this buyer on similar work? i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
No earlier contract of this buyer matches this lot on the published record.
Who could compete for this lot? i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
Candidate suppliers for this notice have not been worked out yet, so this is not a verdict that nobody fits.
About this data
- Source. Official UK public procurement notices (Find a Tender), reused under the Open Government Licence v3.0. New notices arrive through the day; the figures are rebuilt nightly.
- Two views, kept apart. The authority’s own track record and the wider market for the same kind of work sit side by side and are never mixed. Where the local picture is too thin, a figure widens to a broader market and says which one it used.
- Forecasts are labelled. The price forecast and its range, possible competitors and the earlier-work matches are our estimates from past awards: not published facts, not win chances and not price advice. Official notices do not say who is bidding.
- Every figure shows what it rests on. Not every notice publishes a bid count, a value or a delivery region, so each figure carries the number of records behind it, and one built on few records is marked as such. The on a figure explains it; the counting rules are in the methodology. Spotted something wrong? Tell us.
Procedure terms & legal framework
From the official record- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Works
- Notice status
- Planned procurement
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Standard
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 15 Oct 2025, 14:03 BST
- Last source update
- 15 Oct 2025, 14:03 BST
- Authority reference
ERFX1008708- FTS notice number
2025/S 000-065603- Latest notice
- Preliminary market engagement notice (UK2)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-05cd54Find a Tender
How it was run
Official notice- Submission deadline
- —
Timeline
15 Oct 2025 → 1 Jan 2027 · 4 dates- Planning notice published372 days ago15 Oct 2025, 14:03 BST
- Market engagement330 days ago26 Nov 2025, 23:59 GMT
How to Respond
Responses and queries should be submitted through the Proactis portal: Proactis – Supplier Network.
Reference: ERFX1008705
Deadline for Responses: 12:00:00 (noon) on Friday 7th November 2025
- Tender notice expected21 days ago1 Oct 2026, 23:59 BST
- Today22 Oct 2026
- Contract startsin 70 days1 Jan 2027
Notice history
1 event · 1 release on Find a Tender- Preliminary market engagement notice published15 Oct 2025, 14:03 BSTUK2
Commercial outcome & contract awards
Pipeline notice- Awards (0)
- No award published
- Contracts (0)
- No contract published
- Bid statistics
- No aggregate bid statistics published
Contracting authority & participating public bodies
Official documents & specifications (1)
Official links; attachments are not copiedNotices published for this procedure
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender