AwardedAwarded 16 September 2026

Sludge Holding Tanks & Roofs

Thames Water Utilities Limited · Private utility

In brief

Thames Water Utilities Limited awarded construction work to Balmoral Tanks Limited, Gel Engineering Limited and Stortec Engineering Limited and 2 others on 16 September 2026.

The contract runs for 8 years, starting 1 June 2026.

It is split into 3 lots, so a supplier can bid for part of the work.

The buyer says it is suitable for small and medium-sized businesses.

Built from the notice's own fields. Always check the official notice before you bid.

What the notice says

This procurement is for the supply and commissioning of sludge tanks, digesters, other associated tanks, roofs, and related items at various wastewater treatment sites. Target Sites The procurement will cover purchase, installation and commissioning of new sludge tanks, digesters, and other associated tanks and roofs and associated items. Objectives • Compliance: Ensure compliance with legislation, improve the environmental impact of the STW and provide infrastructure which is fit for purpose. • Commercial Value: Optimise the material and delivery solution to maximise commercial efficiencies for Thames Water • Futureproofing: Implement a framework which enables Thames Water to be able toe…Read the full description
This procurement is for the supply and commissioning of sludge tanks, digesters, other associated tanks, roofs, and related items at various wastewater treatment sites. Target Sites The procurement will cover purchase, installation and commissioning of new sludge tanks, digesters, and other associated tanks and roofs and associated items. Objectives • Compliance: Ensure compliance with legislation, improve the environmental impact of the STW and provide infrastructure which is fit for purpose. • Commercial Value: Optimise the material and delivery solution to maximise commercial efficiencies for Thames Water • Futureproofing: Implement a framework which enables Thames Water to be able toe secure the capacity it requires for future programmes of works Procurement Approach: A competitive tender process will be undertaken to appoint a supplier(s) capable of delivering the required scope. The strategy favours a supplier who can streamline delivery, ensure consistency, and maximise commercial and operational benefits. Procurement Timeline Considerations: The procurement timeline is currently under review due to strategic and regulatory reassessments at certain sites. Specifically: • A study evaluating the requirements to meet the Environment Agency IED requirements is ongoing, with outcomes expected later in the year. These findings will inform final scope and procurement readiness Expected Outcomes • Improved asset reliability and operational performance • Enhanced alignment with environmental and regulatory objectives • Commercial efficiencies through strategic sourcing and standardisation

Lots

LotTradeValue
Sludge Holding Tanks (including Digesters and other associated Tanks) (Supply and Installation)
1 June 2026 to 31 May 2034
What this lot covers

This procurement relates to the supply and commissioning support of Sludge tanks, Digesters and Roofs and associated items across potential multiple wastewater treatment sites.

Construction—
Sludge Holding Tanks (including Digesters and other associated Tanks) (CDM Responsibilities)
1 June 2026 to 31 May 2034
What this lot covers

This procurement relates to the supply and commissioning support of Sludge tanks, Digesters and Roofs and associated items across potential multiple wastewater treatment sites. Whilst acting as the responsible CDM representative at the location.

Construction—
Sludge Holding Tank Roofs (including Digesters)
1 June 2026 to 31 May 2034
What this lot covers

This procurement relates to the supply and commissioning support of roofs for the fitting to Sludge tanks, Digesters and associated items across potential multiple wastewater treatment sites

Construction—

Who won

WinnerLotValueDates
Balmoral Tanks Limited (SME)
Gel Engineering Limited (SME)
Stortec Engineering Limited (SME)
Tank Consult Limited (SME)
Sludge Holding Tanks (including Digesters and other associated Tanks) (Supply and Installation)—
Awarded 16 September 2026
Balmoral Tanks Limited (SME)
Gel Engineering Limited (SME)
Stortec Engineering Limited (SME)
Tank Consult Limited (SME)
Sludge Holding Tanks (including Digesters and other associated Tanks) (CDM Responsibilities)—
Awarded 16 September 2026
Balmoral Tanks Limited (SME)
Gel Engineering Limited (SME)
Stortec Engineering Limited (SME)
Tank Consult Limited (SME)
MSD Design Limited (SME)
Sludge Holding Tank Roofs (including Digesters)—
Awarded 16 September 2026

Values as the award notice gives them, excluding VAT where stated.

Timeline

  1. Tender notice · UK4, notice 074498-2025
  2. Contract award notice · UK6, notice 087789-2026

About the buyer

Procurements

41

Awards

11

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From notice 074498-2025 on Find a Tender, first published 17 November 2025, last updated 16 September 2026. We last checked for changes on 28 September 2026.