Official UK procurement notice
CM3540 Ozone Maintenance & Minor Capital Works
Authority: YORKSHIRE WATER SERVICES LIMITED (Public body)
What is being bought
Published requirement descriptionYorkshire Water is conducting a Tender Notice to inform the development of a procurement strategy for specialist ozone maintenance and minor capital works across its ozone process-plant estate.
The proposed framework will support end-to-end planned and reactive maintenance, technical support, emergency response and minor capital works associated with ozone-generation systems and related assets. This will include asset inspections, condition and performance assessments, fault diagnosis, breakdown repair, critical-spares management, obsolescence management, equipment replacement, refurbishment, upgrades and remediation. The scope may also include mechanical, electrical, instrumentation, control and automation works, testing, commissioning, performance validation, warranty support and the provision of maintenance documentation, asset data and operating guidance.
Major design-and-build capital schemes are excluded from the framework and will be delivered through Yorkshire Water's Tier 1 suppliers.
Suppliers with relevant experience and capability are invited to express interest and participate in the CoP.
- How the procedure runs: Yorkshire Water will run a multi-stage procurement using the competitive flexible procedure in accordance with the Procurement Act 2023. Stage 1 - Conditions of Participation (CoP): Interested suppliers submit a COP Questionnaire. Responses are assessed against defined pass/fail Selection Criteria to determine whether suppliers meet Yorkshire Water's minimum requirements. Yorkshire Water may conduct one or more rounds of Selection and reserves the right to shortlist suppliers progressing to subsequent stages. Stage 2 - Contractual Compliance: Shortlisted suppliers will be invited to review and, where permitted, comment on the Proposed Contract. Yorkshire Water will refine and finalise the contract terms during this stage. Only suppliers who accept the final contract terms will progress to the ITT stage. Stage 3 - Invitation to Tender (Quality & Commercial): Suppliers will submit detailed quality and commercial tenders, which will be evaluated in accordance with the award criteria set out in the ITT documentation. Following evaluation, Yorkshire Water will identify the most economically advantageous tenders and award places on the Technical Services and Assurance Framework. The procedure structure and indicative timelines are set out in the procurement documents.
CPV: Drinking-water treatment plant construction work · Installation services of electrical and mechanical equipment · Mechanical and electrical engineering services · Repair and maintenance services of machinery · Technical inspection and testing services · Water-treatment plant construction work · Water-treatment work
How this framework works
From the published notice- Type
- Closed framework
- Call-offs
- call-offs may be awarded directly or by further competition
- Framework period
- 3 yrs · up to 5 yrs from 1 Apr 2027
Published description of the framework
The framework will operate on a single-supplier basis, with Yorkshire Water awarding call-off contracts or work orders for planned and reactive maintenance, technical support, emergency response and minor capital works in accordance with the procedures set out in the Framework Agreement.
Prices for call-offs will be determined using the pricing schedules established at tender, with the ability to confirm or adjust pricing where permitted by the call-off process and the terms of the Framework Agreement.
Yorkshire Water will allocate work to the appointed supplier in accordance with the agreed framework procedures, requirements and priorities. The framework will provide flexibility to respond to planned maintenance programmes, reactive incidents, emergency requirements and minor capital works across Yorkshire Water's ozone estate.
The operation of the framework will be governed by the terms of the Framework Agreement and the procedures communicated during the procurement process. Yorkshire Water will apply these requirements consistently to support transparency, fairness and proportionality in the allocation and delivery of work.
The lotProcurement structure
single lot · value publishedLot #1RenewalPublished value£216,378,718
What it takes to wini
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Evaluation split and conditions of participation as published; the tender pack may add morei
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Published sub-criteria (2)
- Quality Questionnaire: 50%
- Commercial Questionnaire: 50%
Published award criteria (2)
- Commercial Questionnaire
- Quality Questionnaire
- Price carries 50 of 100 points: a 10% discount moves about 5 points. This one is won on the number: sharpen the price before polishing the prose.
- “CM3540 Ozone Maintenance & Minor Capital Works” is a framework: the contest is a place on its panel, not a single contract: call-offs may be direct or by further competition.
Price arithmetic assumes straight proportional scoring; the tender pack may use another formula.
Competition analysis · published record, not a forecast of who will bid
How YORKSHIRE WATER SERVICES LIMITED buys Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork (CPV 4523), and who usually turns up
YORKSHIRE WATER SERVICES LIMITED’s published record next to the market for the same work. Compared with other frameworks and DPS only. Whole-market view: Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork (CPV 4523) →
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.
Local means the winner is registered in the region where that award was delivered.
A local branch does not count if the registered address is elsewhere.
Most of this buyer’s recorded winners were registered outside the region where that award was delivered.
i
How long buyers here take to decide after bids close.
Middle value in days from the bid deadline to the award date, on competitions that published both.
Only decided tenders count, so slow ones still waiting are not in.
Half of these awards have an award date within 116 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.
The market share is a minimum: some awards have no bid count.
Thin markets produce this too; it is not proof of a tailored specification.
Awards are recorded, but published direct routes and bid counts do not establish this buyer’s share.
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 bid3%
2–321%
4–638%
7+38%
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.
On a framework or DPS, prices are agreed when work is called off.
Past prices are a guide, not a bid price.
Not comparable on a framework or DPS: the price is set later, on each call-off.
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 #1CPV 4525Published estimate£216m
This lot is listed as CPV 4525. The table above uses the notice category.
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.
A forecast, not a list of bidders.
1 bid1%
2–313%
4–637%
7+49%
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.
| Supplier | Won in this category | Live contracts | Award vs estimate |
|---|---|---|---|
| £3.7m46 awards in 36m · last 2 months ago | 5 live · £1.0m iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | at estimate n=10 | |
| £3.0m22 awards in 36m · last 2 months ago | 3 live · £1.8m iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | 24% above n=1 | |
| £385k7 awards in 36m · last 2 months ago | 2 live · £130k iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | no comparable pairs | |
| £1.2m20 awards in 36m · last 4 months ago | 1 live · £208k iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | no comparable pairs | |
| £1.1m6 awards in 36m · last 6 months ago | None on file | at estimate n=1 |
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- Procedure method
- Competitive flexible procedure
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Services
- Notice status
- Open admission
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Utilities
- Commercial structure
- Framework agreement
- Who may use this agreement
- Not stated in the notice; call-off rights may be limited to the establishing authority
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 9 Oct 2026, 15:18 BST
- Last source update
- 9 Oct 2026, 15:18 BST
- Award evaluation window
- Submission end – 14 Jan 2027
- FTS notice number
2026/S 000-095760- Latest notice
- Tender notice (UK4)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-0784f5Find a Tender
- How it runs
Yorkshire Water will run a multi-stage procurement using the competitive flexible procedure in accordance with the Procurement Act 2023.
Stage 1 - Conditions of Participation (CoP):
Interested suppliers submit a COP Questionnaire. Responses are assessed against defined pass/fail Selection Criteria to determine whether suppliers meet Yorkshire Water's minimum requirements. Yorkshire Water may conduct one or more rounds of Selection and reserves the right to shortlist suppliers progressing to subsequent stages.
Stage 2 - Contractual Compliance:
Shortlisted suppliers will be invited to review and, where permitted, comment on the Proposed Contract. Yorkshire Water will refine and finalise the contract terms during this stage. Only suppliers who accept the final contract terms will progress to the ITT stage.
Stage 3 - Invitation to Tender (Quality & Commercial):
Suppliers will submit detailed quality and commercial tenders, which will be evaluated in accordance with the award criteria set out in the ITT documentation.
Following evaluation, Yorkshire Water will identify the most economically advantageous tenders and award places on the Technical Services and Assurance Framework.
The procedure structure and indicative timelines are set out in the procurement documents.
How to participate & submission route
Official notice Apply via SAP Ariba- Requests to participate (first stage)
- 3 Nov 2026, 17:00 GMT
- Appointment period ends
- 3 Nov 2026, 17:00 GMT
- Clarification deadline
- 27 Oct 2026, 17:00 GMT
- Submission channel
- Official e-sourcing portal
- Electronic submission
- Allowed
- Accepted languages
- en
Tenders must be submitted electronically via SAP Ariba, Yorkshire Water's e-procurement portal s1-eu.ariba.com/Sourcing/Main/aw ↗...
Suppliers will not be able to view or access the tender in SAP Ariba unless they have been invited by Yorkshire Water through the portal.
If you wish to participate but are not yet registered as a Yorkshire Water supplier, please email: Luis.Barreiros@Yorkshirewater.co.uk and include the full legal company name, and the email address you wish to register. You will then be issued with a registration request and an invitation to the tender via SAP Ariba.
If you are already registered as a Yorkshire Water supplier but have not received an invitation, please email Luis.Barreiros@Yorkshirewater.co.uk and include your ANID number, your full company name, and your registered Ariba email address, so that an invitation to the tender can be issued.
Tender submissions by email or post will not be accepted.
Timeline
9 Oct 2026 → 1 Apr 2027 · 5 dates- Tender notice published18 days ago9 Oct 2026, 15:18 BST
- Clarification questions by18h ago27 Oct 2026, 17:00 GMT
- Today28 Oct 2026
- Admission / appointment period endsin 6 days · period end, not a bid countdown3 Nov 2026, 17:00 GMT
- Award decision expected byin 78 days14 Jan 2027, 23:59 GMT
- Contract startsin 154 days1 Apr 2027, 00:00 BST
Notice history
1 event · 1 release on Find a Tender- Tender notice published9 Oct 2026, 15:18 BSTUK4
Commercial outcome & contract awards
Nothing awarded yet- 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
- Tender notice Tender notice on Find a Tender