Open tenders / Architecture, engineering & surveying
Planned procurement · Notice 088653-2026
White Horse Reservoir (WHR) Independent Technical Advisor (ITA)
Thames Water Utilities Limited
- Value
- £40m
- Stage
- Early notice
- Where
- London, South East
- Lots
- 1
- Suitable for SMEs
- Yes, says the buyer
- Contract
- 1 Aug 2027 – 1 Mar 2050
In plain English
Thames Water is asking the market for feedback ahead of hiring an Independent Technical Advisor for the proposed White Horse Reservoir project, covering technical, commercial, programme, risk and regulatory assurance. The advisor role would run from the early contractor involvement stage through delivery, with a contract period from August 2027 to March 2050 and an estimated value of £40m.
Good fit for: Large engineering and project management consultancies with major water infrastructure assurance experience.
Watch out: Single lot worth around £40m over a 23-year period, so scale and long-term capacity matter; This is only a market engagement exercise, not the actual tender — responses shape the later procurement; Responses must go through the Delta eSourcing portal
Written with AI from the official notice. Check the notice before relying on it.
What the buyer says
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: https://www.delta-esourcing.com/respond/47W66BK2KD
Procedure: not stated. Published 18 Sep 2026.
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