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Harwell Groundwater Treatment Plant Post Closure Monitoring

Nuclear Restoration Services Limited

This public procurement record has 1 release in its history.

Award

27 Jul 2026 at 13:27

Award Notice
Summary of the contracting process

Nuclear Restoration Services Ltd commissioned post-closure monitoring at the Harwell Groundwater Treatment Plant. The requirement is a specialist environmental service covering monitoring or control of groundwater pollution, delivered in the South East of England. It concerns ongoing oversight after the treatment plant has closed, helping the buyer track groundwater conditions and identify any pollution-control issues requiring attention. The contracting authority is Nuclear Restoration Services Ltd, whose address is at the Chapelcross Site in Annan. The work is classified as a service rather than goods or construction, and is relevant to environmental consultancies, groundwater specialists and organisations with experience in monitoring contaminated sites and treatment-plant closure obligations.

The procurement has been awarded and the tender is complete. Nuclear Restoration Services Ltd used a selective call-off from a framework agreement. The estimated procurement value was £95,000, while the active award to WSP UK Ltd was £299,242. The award date was 23 July 2026. The contract period runs from 28 July 2026 to 31 December 2026. The tender submission deadline was 20 July 2026 at 12:00. The award covered one service requirement for the Harwell site, with WSP UK Ltd named as the selected supplier. The published evaluation basis is the framework call-off procedure rather than an open competition.

This award demonstrates a defined requirement from Nuclear Restoration Services Ltd for specialist groundwater monitoring after closure of a treatment plant. Competitors seeking comparable work should be able to monitor groundwater pollution, interpret environmental data and identify or report changes that could affect control measures. Credibility will depend on relevant experience in post-closure environmental monitoring and contaminated or nuclear-related sites, together with the technical capacity to deliver a focused assignment in the South East. The buyer used a framework call-off and recorded the opportunity as unsuitable for SMEs and voluntary, community or social enterprises, indicating that future competitors are likely to need established framework access, substantial organisational capacity and demonstrable specialist capability.

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Notice Information

Notice Title

Harwell Groundwater Treatment Plant Post Closure Monitoring

Notice Description

Harwell Groundwater Treatment Plant Post Closure Monitoring

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-b5fd17-dc2b032e-68e6-43a6-9139-be12063a19b9
Publication Source
Contracts Finder
Latest Notice
https://www.contractsfinder.service.gov.uk/Notice/db13690f-9588-4f01-9bb6-c891172d2540
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
Award Notice
Procurement Type
Framework
Procurement Category
Services
Procurement Method
Selective
Procurement Method Details
Call-off from a framework agreement
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

90 - Sewage, refuse, cleaning and environmental services

CPV Codes

90733700 - Groundwater pollution monitoring or control services

Notice Value(s)

Tender Value
£95,000 Under £100K
Lots Value
Not specified
Awards Value
£299,242 £100K-£500K
Contracts Value
Not specified

Notice Dates

Publication Date
27 Jul 20262 months ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
23 Jul 20262 months ago
Contract Period
28 Jul 2026 - 31 Dec 2026 1-6 months
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Not Specified
Awards Status
Active
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Nuclear Restoration Services 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
ANNAN
Postcode
DG12 6RF
Postcode Area
Dumfries and Galloway
Country
Scotland
Major Region (ITL 1)
TLM Scotland
Basic Region (ITL 2)
TLM9 Southern Scotland
Small Region (ITL 3)
TLM92 Dumfries and Galloway
Delivery Location
TLJ South East (England)
Local Authority
Dumfries and Galloway
Electoral Ward
Annandale South
Westminster Constituency
Dumfriesshire, Clydesdale and Tweeddale

Supplier Information

Number of Suppliers
1
Supplier Name

WSP UK Limited

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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