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Teddington Direct River Abstraction (TDRA) Tunnelling Main Works Contract (MWC)

THAMES WATER UTILITIES LIMITED

This public procurement record has 2 releases in its history.

TenderCancellation

27 Aug 2026 at 17:44

UK12 - Procurement Termination Notice
Tender

28 May 2025 at 17:58

UK4 - Tender Notice
Summary of the contracting process

Thames Water Utilities Limited sought a contractor for the Teddington Direct River Abstraction tunnelling main works. The requirement covered design, construction, testing and commissioning of a recycled-water conveyance tunnel from Mogden Sewage Treatment Works to Teddington, approximately 4.2km long and 3.5m internal diameter, with four shafts. It also included river abstraction and transfer to the existing Thames Lee Tunnel through a pipe-jacked pipe of up to 2.2m internal diameter. Associated work included civil and structural engineering, earthworks, enabling works, drainage, geotechnical and ground-movement management, mechanical and electrical systems, instrumentation, control, automation and SCADA, hydraulic modelling, utilities, highways, watercourses, materials durability, carbon mitigation and excavated-material disposal. Delivery was in the Thames area, including Reading and Teddington.

The procurement reached tender: Thames Water used a selective competitive flexible procedure, inviting requests to participate through an initial qualification stage before inviting shortlisted applicants to tender. It was cancelled before award, because the buyer decided to discontinue this separate tunnelling procurement and start a new process for one consolidated main works contract covering both tunnelling and the tertiary treatment plant. The enquiry deadline was 20 June 2025 at 11:00 and the expression-of-interest deadline was 7 July 2025 at 11:00. The estimated contract value was £242,000,000 gross. The planned contract period ran from 2 October 2026 to 31 March 2033. One lot was evaluated on 30% price and 70% quality. The buyer intended to shortlist four applicants, with possible negotiation and a best-and-final-offer stage.

This opportunity suited major infrastructure and water-sector contractors able to deliver complex tunnelling and construction in a live operational environment. Relevant capability included tunnel-boring-machine excavation, pipe jacking, shafts, river abstraction, water conveyance, treatment-plant interfaces, civils, structures, mechanical and electrical installation, instrumentation, control systems and SCADA. The requirement also called for construction design, hydraulic modelling, geotechnical assessment, ground-movement impact management, drainage, utilities, traffic and highways planning, environmental protection, carbon reduction and sustainable delivery. Strong applicants needed demonstrable financial capacity and technical ability, with enough organisational and supply-chain capability to manage design, logistics, risk, stakeholder engagement, consenting constraints, testing and commissioning. The selection process included pass/fail compliance and eligibility checks, followed by assessed technical ability and shortlisting.

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Notice Information

Notice Title

Teddington Direct River Abstraction (TDRA) Tunnelling Main Works Contract (MWC)

Notice Description

Design, build, test and commission of the following two main components: i) A recycled water conveyance tunnel from Mogden Sewage Treatment Works (STW) to Teddington. A new approximately 4.2km long tunnelled conveyance route approximately 3.5m internal diameter (ID) would be driven using a Tunnel Boring Machine (TBM) and constructed to connect a new Tertiary Treatment Plant (provided by others) in Mogden STW to the proposed outfall on the riverbank of the River Thames upstream of Teddington Weir. The tunnel would have four shafts. ii) River abstraction and transfer to the existing Thames Lee Tunnel (TLT): The river abstraction would be located approximately 175m upstream of the proposed new outfall. The abstracted river flow would be conveyed to the TLT through a smaller diameter (up to 2.2m ID) pipe installed using a pipe jacking technique. The scope will include, but not be limited to: Construction Design activities Architectural Building M&E Civils and Structural engineering including earthworks Enabling works Drainage Geotechnical Ground movement impact Mechanical, Electrical, Instrumentation, Control and Automation (MEICA) including a SCADA (Supervisory Control and Data Acquisition) system Hydraulic Modelling Materials durability Renewables / Carbon mitigation Rivers and Watercourses Traffic & Highways Shafts & Tunnels Utilities Disposal of excavated material The NEC4 Engineering and Construction Contract comprise two stages, with a decision point as to whether to proceed to construction between Stages One and Two. If the decision point is passed, then a Notice to Proceed (NTP) will be issued. Stage One, also known as the Early Contractor Involvement stage, will provide construction related support to the Client during its planning process, which comprises an application for a Development Consent Order (DCO). Using the DCO reference design (provided by others) as a constraint to the scope, the TDRA Tunnelling MWC will develop the design for construction, which will be integrated with construction planning, into the subsequent Stage Two, being the delivery / construction phase. The decision gate to proceed to Stage Two will be dependent on a number of matters, including: 1) An accepted design that meets the requirements of the contract; 2) agreement on a target price; and 3) the granting of the DCO. The agreement of a target price for Stage Two will be constrained by the Client's budget and will be developed in accordance with a Pricing Information Schedule appended to the contract. The Pricing Information Schedule will include an exhaustive list of specific "Adjustment Events" which may adjust the target price for Stage Two. Subject to the Client issuing a NTP, Stage Two will commence with an initial period to comply with any secondary consenting issues, followed by mobilisation to commence construction. Following construction, a testing and commissioning phase will be required with a scheduled target date of Water Available for Use (WAFU) of 31 March 2033.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-05286c
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/081975-2026
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
UK12 - Procurement Termination Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Selective
Procurement Method Details
Competitive flexible procedure
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

CPV Codes

45000000 - Construction work

Notice Value(s)

Tender Value
£242,000,000 £100M-£1B
Lots Value
£242,000,000 £100M-£1B
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
27 Aug 20262 weeks ago
Submission Deadline
20 Jun 2025Expired
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
2 Oct 2026 - 31 Mar 2033 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Cancelled
Lots Status
Cancelled
Awards Status
Cancelled
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
THAMES WATER UTILITIES LIMITED
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
READING
Postcode
RG1 8DB
Postcode Area
Reading
Country
England
Major Region (ITL 1)
TLJ South East (England)
Basic Region (ITL 2)
TLJ1 Berkshire, Buckinghamshire and Oxfordshire
Small Region (ITL 3)
TLJ16 Berkshire West
Delivery Location
TLI London
Local Authority
Reading
Electoral Ward
Thames
Westminster Constituency
Reading Central

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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