---
title: "Teddington Direct River Abstraction (TDRA) Tunnelling Main Works Contract (MWC)"
ocid: "ocds-h6vhtk-05286c"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05286c"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05286c.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05286c.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "THAMES WATER UTILITIES LIMITED"
published: "2025-05-28"
---

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

Buyer: THAMES WATER UTILITIES LIMITED  
Current stage: Tender  
OCID: ocds-h6vhtk-05286c

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## Summary

Thames Water Utilities Limited, located in Reading, United Kingdom, is inviting submissions for the "Teddington Direct River Abstraction (TDRA) Tunnelling Main Works Contract (MWC)." This active tender, tagged for work in the construction industry, falls under a competitive flexible procedure within the utilities procurement sector. It involves the design, construction, and commissioning of significant infrastructure, including a tunnel from Mogden Sewage Treatment Works to the River Thames at Teddington. The procurement process is currently at the tender stage, with interested parties required to submit expressions of interest by 7 July 2025. The tender involves construction work valued at £242 million, with a contract period from 2 October 2026 to 31 March 2033.

This procurement presents an extensive opportunity for businesses specialising in civil engineering, tunnelling, and environmental management. Companies with expertise in mechanical, electrical, instrumentation, control, and automation systems, as well as experience in sustainable construction practices, stand a good chance of being competitive applicants. Given the project's complexity, including early contractor involvement and requirements for advanced technical solutions, well-established firms with robust financial and technical capabilities are encouraged to participate. The process entails a prequalification stage, which screens participants based on compliance, financial stability, and technical competence, offering growth prospects for businesses capable of delivering high-quality infrastructure solutions.

## Notice

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.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/028281-2025 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Selective |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 28 May 2025 |
| Submission deadline | 20 Jun 2025 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 1 Oct 2026 - 31 Mar 2033 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £242,000,000 |
| Lots value | £242,000,000 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Active |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | THAMES WATER UTILITIES LIMITED |
| Locality | READING |
| Post town | Reading |
| Postcode | RG1 8DB |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ1 Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 | TLJ16 Berkshire West |
| Local authority | Reading |
| Electoral ward | Thames |
| Westminster constituency | Reading Central |
| Delivery location | TLI London |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45000000 - Construction work

## Release History

- 28 May 2025 at 16:58 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/028281-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/028281-2025
  28th May 2025 - Tender notice on Find a Tender

## Notice URLs

- https://forms.office.com/pages/responsepage.aspx?id=zb56VRQyu0-OUUFLaOu3ljMaVmeD31JAkhT_shZ_UxpUOVhYQk1RRU9FWEZHTzUyR0dDNFJMVksyNS4u&route=shorturl
- https://forms.office.com/pages/responsepage.aspx?id=zb56VRQyu0-OUUFLaOu3ljMaVmeD31JAkhT_shZ_UxpUOVhYQk1RRU9FWEZHTzUyR0dDNFJMVksyNS4u&route=shorturlThislinkwilltakeinterestedpartiestotheRegistrationofInterestpage.CompletingtheRegistrationofInterestformwillthenprovideaccesstothesecuresitecontainingtheProcurementSpecificQuestionnairePack(PSQPack)andsubmissionportal.
- https://www.legislation.gov.uk/ukpga/2023/54/contents
- https://www.thameswater.co.uk/

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05286c. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05286c.json.