--- title: "SZC - Main Works Earthworks - Bulk Excavation" ocid: "ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5" markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5.md" json_url: "https://d3tenders.com/contract/ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5.json" source: "Contracts Finder" current_stage: "Tender" buyer: "SIZEWELL C LIMITED" published: "2025-10-17" --- # SZC - Main Works Earthworks - Bulk Excavation Buyer: SIZEWELL C LIMITED Current stage: Tender OCID: ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5) [Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-5d6eb84e-724a-4a16-9862-ced7905f86a5.json) ## Summary 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. ## Notice 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 ## Key Details | Field | Value | | --- | --- | | Publication source | Contracts Finder | | Latest notice | https://www.contractsfinder.service.gov.uk/Notice/ef6a25d6-3920-48e4-8b5c-c00d3aea1d6e | | Notice type | Tender Notice | | Procurement type | Standard | | Procurement category | Works | | Procurement method | Not Specified | | Procurement method details | Not specified | | Tender suitability | Not specified | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 17 Oct 2025 | | Submission deadline | 31 Oct 2025 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 4 Jan 2027 - 8 Dec 2028 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £250,000,000 | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Active | | Lots status | Not specified | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | SIZEWELL C LIMITED | | Locality | LONDON | | Post town | West London | | Postcode | W1T 4EZ | | Country | England | | ITL 1 | TLI London | | ITL 2 | TLI3 Inner London - West | | ITL 3 | TLI36 Camden | | Local authority | Camden | | Electoral ward | Bloomsbury | | Westminster constituency | Holborn and St Pancras | | Delivery location | Not specified | ## CPV Codes ### Divisions - 43 - Machinery for mining, quarrying, construction equipment - 45 - Construction work ### 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 ## Release History - 17 Oct 2025 at 11:20 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/ef6a25d6-3920-48e4-8b5c-c00d3aea1d6e ## Documents - https://www.contractsfinder.service.gov.uk/Notice/ef6a25d6-3920-48e4-8b5c-c00d3aea1d6e 17th October 2025 - Opportunity notice on Contracts Finder - https://www.competefor.com/business/viewOpportunityDetailsSupplier.html?id=101112364 Please follow this link to view the notice. ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. 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