Tender

SZC - Main Works Earthworks - Bulk Excavation

SIZEWELL C LIMITED

This public procurement record has 1 release in its history.

Tender

17 Oct 2025 at 11:20

Tender Notice
Summary of the contracting process

Sizewell C Limited is seeking contractors for the "SZC - Main Works Earthworks - Bulk Excavation" project, a substantial earthmoving operation that forms part of the main construction effort for a nuclear power plant. The specific work involves excavating and transporting large quantities of earth materials like made ground, alluvial deposits, and crag sand, with quantities exceeding 3.2 million cubic metres in total. These operations are scheduled within the Main Construction Area and Temporary Construction Area, using specialised machinery and adhering to detailed specifications for material testing and stockpile management. The procurement process is currently in the tender stage, with the tender period ending on 31st October 2025. The contract is to begin in January 2027 and conclude in December 2028, covering geographic jurisdictions that include the United Kingdom and various international regions. The procurement is primarily classified under the "Excavating and earthmoving work" CPV code, with an estimated contract value ranging from £100 million to £250 million. Interested parties must respond by the specified deadline.

This tender offers robust opportunities for experienced contractors in the earthmoving and civil engineering sectors, particularly those with capabilities and equipment suited for large-scale excavation projects. The project requires the mobilisation and management of extensive machinery fleets, including all-terrain dump trucks and earthmoving equipment, presenting significant business development potential for suppliers of such machinery and associated services. Despite the exclusion of SMEs or VCSEs from direct involvement, larger enterprises with a focus on civil engineering and infrastructure development can leverage this opportunity to expand their portfolios and reinforce their market presence within the nuclear construction industry. Those able to demonstrate comprehensive project management capabilities and a track record of delivering similar large-scale projects will find themselves well-prepared to meet the requirements of this ambitious infrastructure effort.

Find more tenders on our Open Data Platform.
How relevant is this notice?

D3 Tenders Premium

Win More Public Sector Contracts

AI-powered tender discovery, pipeline management, and market intelligence — everything you need to grow your public sector business.

Start Free Trial Book a Demo
All Features Pricing

Notice Information

Notice Title

SZC - Main Works Earthworks - Bulk Excavation

Notice Description

The scope of works for this package is the bulk excavation of made ground, alluvial material and crag sand from the Main Construction Area (MCA) and transportation to either the suitable material stockpiles or unsuitable material disposal areas within the Temporary Construction Area (TCA), to allow for the placement of backfill material for the nuclear plant building foundations. The scope will also include for all material testing required by the specification and the management of the stockpiles and unsuitable material disposal areas. The backfill placement (not part of this scope) will commence in available areas while the bulk excavation is still in progress within the MCA. The essence of the bulk excavation operation, together with the subsequent backfill placement, is to enable commencement construction of Units 1 and 2 on the earliest practicable dates. The bulk excavation quantities, by type are: Made Ground including Crag Sand - 912,000 m3 Alluvial Deposits, including peat - 914,000 m3 Crag Sand - 1,443,000m3 The key elements of the scope are: Bulk Excavation: Excavation and loading into transport vehicles (typically 45T all -terrain dump trucks) of made ground, alluvial deposits and Crag sand within the MCA. Assessment of material suitability or otherwise (jointly with CWA) including testing as necessary. Marshalling and management of vehicles and equipment within the MCA. Maximising excavation of the three primary material types, recognising that excavation at the interface between layers will result in some mixing. Transport and Discharge: Transport to the storage or disposal locations within the TCA, using the segregated heavy haul road. This haul road will be managed by the CWA and will be used primarily by material-hauling vehicles for the bulk excavation works and backfilling operation. Discharge as directed by the stockpile managers (management of the suitable material stockpiles and disposal areas will be by the CWA). Testing to verify compliance with the specification, in accordance with the approved Quality Plan. Shaping and compaction of stockpiles and disposal areas, in accordance with the specification and CWA direction Additional information: It will be beneficial for you to describe your business as mush as possible and highlight where you can help us to achieve our values described above

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5
Publication Source
Contracts Finder
Latest Notice
https://www.contractsfinder.service.gov.uk/Notice/ef6a25d6-3920-48e4-8b5c-c00d3aea1d6e
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
Tender Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Not Specified
Procurement Method Details
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

43 - Machinery for mining, quarrying, construction equipment

45 - Construction work

CPV Codes

43200000 - Earthmoving and excavating machinery, and associated parts

43210000 - Earthmoving machinery

43310000 - Civil engineering machinery

45112000 - Excavating and earthmoving work

45112500 - Earthmoving work

45520000 - Hire of earthmoving equipment with operator

Notice Value(s)

Tender Value
£250,000,000 £100M-£1B
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
17 Oct 20254 months ago
Submission Deadline
31 Oct 2025Expired
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
4 Jan 2027 - 8 Dec 2028 1-2 years
Recurrence
Not specified

Notice Status

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

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
SIZEWELL C 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
LONDON
Postcode
W1T 4EZ
Post Town
West London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI36 Camden
Delivery Location
Not specified
Local Authority
Camden
Electoral Ward
Bloomsbury
Westminster Constituency
Holborn and St Pancras

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

Download

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. 

{
    "tag": [
        "compiled"
    ],
    "id": "ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5-2025-10-17T12:20:03+01:00",
    "date": "2025-10-17T12:20:03+01:00",
    "ocid": "ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5",
    "language": "en",
    "initiationType": "tender",
    "tender": {
        "id": "C4N101112350",
        "title": "SZC - Main Works Earthworks - Bulk Excavation",
        "description": "The scope of works for this package is the bulk excavation of made ground, alluvial material and crag sand from the Main Construction Area (MCA) and transportation to either the suitable material stockpiles or unsuitable material disposal areas within the Temporary Construction Area (TCA), to allow for the placement of backfill material for the nuclear plant building foundations. The scope will also include for all material testing required by the specification and the management of the stockpiles and unsuitable material disposal areas. The backfill placement (not part of this scope) will commence in available areas while the bulk excavation is still in progress within the MCA. The essence of the bulk excavation operation, together with the subsequent backfill placement, is to enable commencement construction of Units 1 and 2 on the earliest practicable dates. The bulk excavation quantities, by type are: Made Ground including Crag Sand - 912,000 m3 Alluvial Deposits, including peat - 914,000 m3 Crag Sand - 1,443,000m3 The key elements of the scope are: Bulk Excavation: Excavation and loading into transport vehicles (typically 45T all -terrain dump trucks) of made ground, alluvial deposits and Crag sand within the MCA. Assessment of material suitability or otherwise (jointly with CWA) including testing as necessary. Marshalling and management of vehicles and equipment within the MCA. Maximising excavation of the three primary material types, recognising that excavation at the interface between layers will result in some mixing. Transport and Discharge: Transport to the storage or disposal locations within the TCA, using the segregated heavy haul road. This haul road will be managed by the CWA and will be used primarily by material-hauling vehicles for the bulk excavation works and backfilling operation. Discharge as directed by the stockpile managers (management of the suitable material stockpiles and disposal areas will be by the CWA). Testing to verify compliance with the specification, in accordance with the approved Quality Plan. Shaping and compaction of stockpiles and disposal areas, in accordance with the specification and CWA direction Additional information: It will be beneficial for you to describe your business as mush as possible and highlight where you can help us to achieve our values described above",
        "datePublished": "2025-10-17T12:20:03+01:00",
        "status": "active",
        "classification": {
            "scheme": "CPV",
            "id": "45112000",
            "description": "Excavating and earthmoving work"
        },
        "additionalClassifications": [
            {
                "scheme": "CPV",
                "id": "43310000",
                "description": "Civil engineering machinery"
            },
            {
                "scheme": "CPV",
                "id": "43200000",
                "description": "Earthmoving and excavating machinery, and associated parts"
            },
            {
                "scheme": "CPV",
                "id": "45112500",
                "description": "Earthmoving work"
            },
            {
                "scheme": "CPV",
                "id": "43210000",
                "description": "Earthmoving machinery"
            },
            {
                "scheme": "CPV",
                "id": "45520000",
                "description": "Hire of earthmoving equipment with operator"
            }
        ],
        "items": [
            {
                "id": "1",
                "deliveryAddresses": [
                    {
                        "countryName": "British Oversea Territories"
                    },
                    {
                        "countryName": "Channel Islands"
                    },
                    {
                        "countryName": "Europe"
                    },
                    {
                        "countryName": "Isle of Man"
                    },
                    {
                        "countryName": "Rest of the World"
                    },
                    {
                        "countryName": "United Kingdom"
                    }
                ]
            }
        ],
        "minValue": {
            "amount": 100000000,
            "currency": "GBP"
        },
        "value": {
            "amount": 250000000,
            "currency": "GBP"
        },
        "tenderPeriod": {
            "endDate": "2025-10-31T17:00:00Z"
        },
        "contractPeriod": {
            "startDate": "2027-01-04T00:00:00Z",
            "endDate": "2028-12-08T23:59:59Z"
        },
        "suitability": {
            "sme": false,
            "vcse": false
        },
        "mainProcurementCategory": "works",
        "documents": [
            {
                "id": "1",
                "documentType": "tenderNotice",
                "description": "Opportunity notice on Contracts Finder",
                "url": "https://www.contractsfinder.service.gov.uk/Notice/ef6a25d6-3920-48e4-8b5c-c00d3aea1d6e",
                "datePublished": "2025-10-17T12:20:03+01:00",
                "format": "text/html",
                "language": "en"
            },
            {
                "id": "2",
                "documentType": "tenderNotice",
                "description": "Please follow this link to view the notice.",
                "url": "https://www.competefor.com/business/viewOpportunityDetailsSupplier.html?id=101112364"
            }
        ]
    },
    "parties": [
        {
            "id": "GB-CFS-262881",
            "name": "Sizewell C Limited",
            "identifier": {
                "legalName": "Sizewell C Limited"
            },
            "address": {
                "streetAddress": "90 Whitfield Street",
                "locality": "London",
                "postalCode": "W1T4EZ",
                "countryName": "UK"
            },
            "contactPoint": {
                "name": "Bryan Jenkinson",
                "email": "bryan.jenkinson@sizewellc.com",
                "telephone": "07590353416"
            },
            "roles": [
                "buyer"
            ]
        }
    ],
    "buyer": {
        "id": "GB-CFS-262881",
        "name": "Sizewell C Limited"
    }
}