TenderlineUK
Procurement Intelligence
Official OCDSSearch
Find a TenderPlanned procurementPreliminary market engagement notice
Published 18 Sept 2026, 12:30 BST

Official UK procurement notice

White Horse Reservoir (WHR) Independent Technical Advisor (ITA)

Authority: THAMES WATER UTILITIES LIMITED (Public body)

ServicesAbove thresholdUtilitiesSME suitable
Sectors: Architecture & Engineering (71)IT Services & Software (72)Business Services & Consultancy (79) Delivery: London (UKI)South East (UKJ)
Published estimate £40,000,000≈ £1.8m / year · £48,000,000 inc. VAT
Tender notice expected Date not publishedfrom the planned procurement notice
Contract term 22 yrs 7 mostarts 1 Aug 2027

What is being bought

Published requirement description

Thames Water Utilities Limited is undertaking Preliminary Market Engagement (PME) in relation to the proposed procurement of an Independent Technical Advisor (ITA) for the White Horse Reservoir (WHR) project.

The purpose of this market engagement is to obtain feedback from the market to help inform the development of the requirement, including the proposed scope of services, commercial approach, procurement strategy, market capacity and capability, and key delivery considerations.

The ITA is anticipated to provide independent technical, commercial, programme, risk and regulatory assurance services in support of the project's governance and delivery arrangements. The services are expected to cover both the Early Contractor Involvement (ECI) stage and the subsequent Delivery stage of the project.

Feedback received through this engagement will be used to help shape the final procurement approach and supporting documentation for the proposed ITA appointment.For more information about this opportunity, please visit the Delta eSourcing portal at:

https://www.delta-esourcing.com/tenders/UK-UK-Reading:-Advisory-and-consultative-engineering-services./47W66BK2KD

To respond to this opportunity, please click here:

Read the full description (50 more characters)

https://www.delta-esourcing.com/respond/47W66BK2KD

CPV: Advisory and consultative engineering services · Construction project management services · General management consultancy services · Project management consultancy services · Technical analysis or consultancy services

The lotProcurement structure

single lot · no lot value published
Lot #1Lot 1Planned 22 yrs 7 moSME
Contract period: 1 Aug 2027 — 1 Mar 2050 (22 yrs 7 mo)Eligibility: SME eligibleDelivery: London, South East
71318000 Advisory and consultative engineering services71541000 Construction project management services71621000 Technical analysis or consultancy services72224000 Project management consultancy services79411000 General management consultancy services

Procedure terms & legal framework

From the official record
Legal basis
UKPGA · 2023/54 Procurement Act 2023
Procurement category
Services
Notice status
Planned procurement
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
No (one-off requirement)
First published
18 Sept 2026, 12:30 BST
Last source update
18 Sept 2026, 12:30 BST
Authority reference
2552
Latest notice
Preliminary market engagement notice (UK2)
Classification (CPV)
Advisory and consultative engineering servicesConstruction project management servicesGeneral management consultancy servicesProject management consultancy servicesTechnical analysis or consultancy services
Delivery area
London (UKI)South East (UKJ)
Official registry OCID
ocds-h6vhtk-07755f

How it was run

Submission deadline
—

Timeline

3 published dates · Europe/London
  1. Planning notice published2 days ago
    18 Sept 2026, 12:30 BST
  2. Market engagementin 21 days
    11 Oct 2026, 00:59 BST
    Access to Market Engagement Documentation Due to the commercially sensitive nature of the information to be shared, interested organisations will be required to enter into a Mutual Non-Disclosure Agreement (NDA) before participating in this market engagement exercise. Suppliers wishing to more…participate should register their interest via Delta eSourcing and access the Tenderbox using the following code: Tenderbox Access Code: 47W66BK2KD Within the Tenderbox, suppliers will be able to download the NDA and associated instructions. A fully executed NDA must be submitted via the Tenderbox no later than 12:00 noon on 25 September 2026. Only organisations that have submitted a fully executed NDA by the stated deadline will be provided with access to the detailed Market Briefing Pack and Market Sounding Questionnaire. A countersigned copy of the NDA will be issued alongside the Market Briefing Pack and Market Sounding Questionnaire. Participating organisations will be invited to review the information provided and submit feedback as part of this Preliminary Market Engagement exercise. Feedback received will be used to inform the development of the requirement, procurement strategy, commercial approach and procurement documentation. Participation in this market engagement exercise will not influence any future procurement process and does not constitute any commitment by Thames Water to commence a procurement or award a contract. For more information about this opportunity, please visit the Delta eSourcing portal at: https://www.delta-esourcing.com/tenders/UK-UK-Reading:-Advisory-and-consultative-engineering services./47W66BK2KD To respond to this opportunity, please click here: https://www.delta-esourcing.com/respond/47W66BK2KD
  3. Contract startsin 315 days
    1 Aug 2027, 01:00 BST

Commercial outcome & contract awards

Pipeline notice
Awards (0)
No award published
Contracts (0)
No contract published
Bid statistics
No aggregate bid statistics published

Notice history

1 event · 1 release on Find a Tender
  1. Preliminary market engagement notice published
    18 Sept 2026, 12:30 BSTUK2

Contracting authority & participating public bodies

THAMES WATER UTILITIES LIMITED

Contracting authorityPrivate utility GB-COH: 02366661 · GB-PPON: PNQQ-4647-DTCV Clearwater Court, Reading, South East, RG1 8DB [email protected]
View buyer profile →

Official documents & specifications (1)

Official links; attachments are not copied

Notices published for this procedure