Official UK procurement notice
K298 Maple Lodge STW Quality AMP 7 New Permit
Authority: THAMES WATER UTILITIES LIMITED
What is being bought
Published requirement descriptionThis project includes, but is not limited to the following packages of work:
An additional inlet screen with civils alterations and screening handling upgrade
An additional detritor and flow inlet channel, incorporating a new storm separation weir
A new storm tank and river outfall, including flow transfer culvert and new storm return pumping station
Upgrades to the existing six PSTs and conversion of three storm tanks into PSTs, fitted with chain and flight scraper Replacement Primary chemical dosing pumps to aid Phosphorus removal
A new activated sludge plant Bank C, with new feed PS and blowers
Eight new 28m diameter final settlement tanks, interconnecting pipework, distribution chambers and RAS system
A new secondary chemical dosing system to aid Phosphorus removal
Two new Tertiary Solids Removal treatment plants, one serving the effluent from Bank A and B, and one serving the effluent from the new Bank C
An additional Drum thickener
New incoming switchboard for the new DNO supply
Modification and upgrade of HV/LV networks
Modification and upgrade to the power management system and site-wide SCADA
Modification and upgrade to the Process SCADA
Additional standby powered generation
Demolition and removal of redundant structures, plant and equipment
N.B. Please note that this Contract Notice shows a value of £280m. The current contract value is circa £140m-£280m.
- How the procedure runs: The steps that will be followed, including negotiation, refinement of award criteria, and supplier selection for multiple tendering rounds. • Stage 1: Procurement Specific Questionnaire (PSQ); Further explanation of PSQ process could be found in PSQ Instruction • Stage 2: Invitation to Tender (ITN); Further explanation of ITN process could be found in ITN Instruction • Stage 3: Evaluation; Evaluation criteria (Technical 40% Behavioral 20%, Commercial 40%) Further explanation of evaluation process could be found in ITN Instruction • Stage 4 Contract Award
CPV: Wastewater treatment plant construction work
The lotProcurement structure
single lot · value publishedLot #1AwardedPublished value£280,000,000
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 (3)
- Technical: 40%
- Behavioral: 20%
- Commercial: 40%
Published award criteria (3)
- Technical
- Commercial
- Behavioral
- Price carries 40 of 100 points: a 10% discount moves about 4 points. The method statement decides this lot, not the discount.
Price arithmetic assumes straight proportional scoring; the tender pack may use another formula.
Procedure terms & legal framework
From the official record- Procedure method
- Competitive flexible procedure
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Works
- Notice status
- Awarded
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Utilities
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 1 Apr 2025, 08:22 BST
- Last source update
- 17 Feb 2026, 15:58 GMT
- Award evaluation window
- Submission end – 17 Oct 2025
- Authority reference
TC2239- FTS notice number
2025/S 000-012114- Latest notice
- Contract award notice (UK6)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-04faf2Find a Tender
- How it runs
The steps that will be followed, including negotiation, refinement of award criteria, and supplier selection for multiple tendering rounds.
- Stage 1: Procurement Specific Questionnaire (PSQ);
Further explanation of PSQ process could be found in PSQ Instruction
- Stage 2: Invitation to Tender (ITN);
Further explanation of ITN process could be found in ITN Instruction
- Stage 3: Evaluation;
Evaluation criteria (Technical 40% Behavioral 20%, Commercial 40%)
Further explanation of evaluation process could be found in ITN Instruction
- Stage 4 Contract Award
How it was run
Official notice- Requests to participate (first stage)
- 6 May 2025, 10:00 BST
- Submission deadline
- 6 May 2025, 10:00 BST
- Clarification deadline
- 25 Apr 2025, 17:00 BST
- Submission channel
- Official e-sourcing portal
- Electronic submission
- Allowed
- Accepted languages
- en
You can register your interest to participate here;
forms.office.com/e/wVqLQ2QD9b ↗
You will then be issued with access to the project documentation.
Timeline
1 Apr 2025 → 26 Feb 2026 · 8 dates- Tender notice published1 Apr 2025, 08:22 BST
- Clarification questions by25 Apr 2025, 17:00 BST
- Submission deadline6 May 2025, 10:00 BST
- Award decision expected by375 days ago17 Oct 2025, 23:59 BST
- Contract starts373 days ago20 Oct 2025, 00:00 BST
- Assessment summaries sent253 days ago17 Feb 2026
- Latest notice published252 days ago17 Feb 2026, 15:58 GMT
- Standstill ends243 days ago26 Feb 2026, 23:59 GMT
Notice history
4 events · 2 releases on Find a Tender · since 1 Apr 2025- Tender notice published1 Apr 2025, 08:22 BSTUK4
- Contract award notice published17 Feb 2026, 15:58 GMTUK6
- Status changed to complete17 Feb 2026, 15:58 GMT
- Contract signature expected31 Mar 2026, 23:59 BSTscheduled
Commercial outcome & contract awards
Published awards, contracts and bid statistics, not a forecast| Awarded to | Value | Date | Status |
|---|---|---|---|
| KIER INFRASTRUCTURE AND OVERSEAS LIMITED1 Apr 2026 – 29 Mar 2030 | £280,000,000 inc. VAT | 17 Feb 2026standstill to 26 Feb 2026 | Standstill |
Contracting authority & participating public bodies
Bidders & participating suppliers
1 commercial party on the notice- KIER INFRASTRUCTURE AND OVERSEAS LIMITEDAwarded supplier
Official documents & specifications (2)
Official links; attachments are not copiedNotices published for this procedure
- Contract award notice Contract award notice on Find a Tender
- Tender notice Tender notice on Find a Tender