Find a TenderPlanned procurementPreliminary market engagement notice
Published 21 May 2026, 15:51 BST

Official UK procurement notice

Early Works - Civils, Infrastructure, Buildings & MEP and Earthworks

Authority: Great British Energy - Nuclear (Public body)

WorksCompetitive flexible procedureAbove thresholdSME suitable
Planned pipeline value£0pipeline notice, not a live tender
Tender notice expected 1 Mar 2027from the planned procurement notice
Contract term 6 yrsends 1 Jun 2034 · up to 1 Jun 2037 with extensions · starts 1 Jun 2028

What is being bought

Published requirement description

This work package covers key enabling activities required to prepare the site for main construction. It includes the design (from RIBA 4 Stage) and delivery of, ground related enabling activities required to prepare the site for construction, including species relocation, remediation servies, site clearance, site establishment, construction utilities, and supporting infrastructure—such as drainage and haul roads to support bulk earthworks. Together, these early work establish correct ground levels, and create safe access rotes for subsequent phases, and will provide the foundational physical platform needed to de‑risk, mobilise, and accelerate the main works programme. GBE-N had previously considered spllitting these packages into two, but has decised to consolidate into one package to minimise interface risk.

*The positions and timelines presented are based on current information and assumptions. As programme maturity develops and further validation is undertaken, scope, dates, values and sequencing may change.*

Contract Value range: £730m-£1,100m

CPV: Architectural, construction, engineering and inspection services · Construction structures and materials; auxiliary products to construction (except electric apparatus) · Construction work · Engineering works and construction works · Machinery for mining, quarrying, construction equipment · Site preparation work · Works for complete or part construction and civil engineering work

The lotProcurement structure

single lot · no lot value published

Pipeline intelligence · planning stage: how this market runs before the tender is published

How Great British Energy - Nuclear buys Works for complete or part construction and civil engineering work (CPV 4520), and who usually turns up

Great British Energy - Nuclear’s published record next to the market for the same work. Frameworks and DPS are left out: they draw different bid counts. Whole-market view: Works for complete or part construction and civil engineering work (CPV 4520) →

1

How the contest usually goes

Winner shares use published awards; bid and price charts use contested lots.

Question for the bid
This buyerGreat British Energy - Nuclear · all categories
What to do with it
How often do SMEs win?
i

How often small and medium firms win.

Share of awards where the winner’s size is known.

The counts under this question show how many awards have a known supplier size.

Last 36 months.

Buyer: 7 of 32 known-size awards · market: CPV 4520 · UK-wide, n=107
22%71%

Small firms have won here. Neither number says whether you qualify; it describes who has been winning.

How often do local suppliers win?
i

How often local firms win similar work.

Winners with a registered address in the delivery region, out of awards with a known address.

Local means the winner is registered in the region where that award was delivered.

A local branch does not count if the registered address is elsewhere.

Last 36 months.

Buyer: 4 of 4 known-location awards · market: CPV 4520 · UK-wide, n=133
4 of 477%

Most of this buyer’s recorded winners were registered in the region where that award was delivered.

How long to a decision?
i

How long buyers here take to decide after bids close.

Middle value in days from the bid deadline to the award date, on competitions that published both.

Only decided tenders count, so slow ones still waiting are not in.

Last 36 months.

Buyer: no decision dates published · market: CPV 4520 · UK-wide, n=19
—42 days

Half of these awards have an award date within 42 days of the bid deadline.

How often single-bid or direct?
i

How often work is awarded with no recorded rival.

Direct awards and tenders where every published lot count shows one bid.

Both shares are minimums: some awards have no bid count.

Thin markets produce this too; it is not proof of a tailored specification.

Last 36 months.

Buyer: at least 27 of 44 procurements with awards had no recorded rival · market: CPV 4520 · UK-wide, n=156
61%32%

Direct awards or one recorded bid are common here. Check the route before spending time on a bid.

How many bids did past lots attract?

i

How many bids past lots received.

Each colour is a bid-count range. Only competed lots with a published count are included.

Past bids do not predict this tender.

Last 36 months.

This buyerToo few to chart: 2 lots with bid counts, 5 needed · all categories
The market40 lots with bid counts · CPV 4520 · UK-wide
13% had one bid
Market · select a colour for counts
1 bid13%
Market: 5 of 40 lots with published bid counts.
2–335%
Market: 14 of 40 lots with published bid counts.
4–635%
Market: 14 of 40 lots with published bid counts.
7+18%
Market: 7 of 40 lots with published bid counts.

How did awards compare with estimates?

i

Where winning prices landed against estimates.

Each colour shows awards below, close to or above the published estimate, one lot at a time.

Past prices are a guide, not a bid price.

Last 36 months.

This buyerNo estimate-and-award pairs published
The market47 lots with estimate and award · CPV 4520 · UK-wide
45% below estimate
Market · select a colour for counts
Below estimate45%
Market: 21 of 47 lots with an estimate and award.
Within ±2%43%
Market: 20 of 47 lots with an estimate and award.
Above estimate13%
Market: 6 of 47 lots with an estimate and award.
2

Assess each lot
i

What past awards tell you about each lot.

See the forecast, this buyer’s earlier suppliers and firms with relevant wins.

No supplier is confirmed as a bidder.

Open a lot for its forecast, this buyer’s previous supplier and possible competitors, from published award history, not a bid list

Lot #1CPV 4572 monthsSME suitableNo real estimate

This lot lists more than one class in CPV 45. The comparison uses that group.

Expected competition
i

How many bids this lot may attract.

The forecast uses similar past competitions. The bar shows either that forecast or past bid counts; the line below says which.

Each lot shows its own forecast based on its own category; forecasts for different lots of the same notice are not comparative. The bar shows 1,736 past lots.

A forecast, not a list of bidders.

—No model forecast yet12% chance of a single bid
Past bids on 1,736 similar lots
1 bid12%
204 of 1,736 similar past lots received 1 bid (12%).
2–327%
473 of 1,736 similar past lots received 2–3 (27%).
4–630%
528 of 1,736 similar past lots received 4–6 (30%).
7+31%
531 of 1,736 similar past lots received 7+ (31%).
Comparable past lots usually drew 4 bids.
Commercial price forecast
i

Where the award price may land.

The forecast uses similar awards and the buyer’s estimate. The band covers the middle half of likely prices.

No comparable awards for this lot yet.

A statistical guide from past awards, not a price to bid.

—No real estimate
The buyer published £0 as the estimate (a placeholder, not the contract’s value), so there is nothing to forecast against.

Who has supplied this buyer on similar work?
i

Who has done similar work for this buyer.

Past contracts are matched by buyer, title and type of work.

A past supplier may not bid again.

No earlier contract of this buyer matches this lot on the published record.

Who could compete for this lot?
i

Who could compete for this lot?

Firms with relevant past wins. On a framework, we show firms on that agreement.

None is confirmed as a bidder.

Candidate suppliers for this notice have not been worked out yet, so this is not a verdict that nobody fits.

About this data
  • Source. Official UK public procurement notices (Find a Tender), reused under the Open Government Licence v3.0. New notices arrive through the day; the figures are rebuilt nightly.
  • Two views, kept apart. The authority’s own track record and the wider market for the same kind of work sit side by side and are never mixed. Where the local picture is too thin, a figure widens to a broader market and says which one it used.
  • Forecasts are labelled. The price forecast and its range, possible competitors and the earlier-work matches are our estimates from past awards: not published facts, not win chances and not price advice. Official notices do not say who is bidding.
  • Every figure shows what it rests on. Not every notice publishes a bid count, a value or a delivery region, so each figure carries the number of records behind it, and one built on few records is marked as such. The on a figure explains it; the counting rules are in the methodology. Spotted something wrong? Tell us.

Procedure terms & legal framework

From the official record
Procedure method
Competitive flexible procedure
Legal basis
UKPGA · 2023/54 Procurement Act 2023
Procurement category
Works
Notice status
Planned procurement
Procurement threshold
Above threshold (FTS publication)
Regulatory regime
Standard
Commercial structure
Stand-alone contract (no framework)
Competition type
Competitive procedure
GPA / WTO covered
Unspecified in notice
Recurring procurement
Unspecified in notice
First published
21 May 2026, 15:51 BST
Last source update
4 Sept 2026, 11:45 BST
FTS notice number
2026/S 000-083841
Latest notice
Preliminary market engagement notice (UK2)
Classification (CPV)
Architectural, construction, engineering and inspection servicesConstruction structures and materials; auxiliary products to construction (except electric apparatus)Construction workEngineering works and construction worksMachinery for mining, quarrying, construction equipmentSite preparation workWorks for complete or part construction and civil engineering work
Delivery area
UK
Official registry OCID
ocds-h6vhtk-069fb5 Find a Tender

How it was run

Official notice
Submission deadline
—

Timeline

21 May 2026 → 1 Jun 2028 · 5 dates
  1. Planning notice published156 days ago
    21 May 2026, 15:51 BST
  2. Market engagement51 days ago
    3 Sept 2026, 23:59 BST

    Great British Energy – Nuclear (GBE-N) will hold a Preliminary Market Engagement (PME) webinar on Thursday 3rd September 2026 between the hours of 10am – 11:45am. The purpose of this webinar is to provide the market with an insight into the contracts to be procured under GBE-N’s Owner’s Scope (OS).

    The OS will encompass the planning, licensing, design, and construction activities necessary to enable the Technology Partner (TP) to install and commission Small Modular Reactor (SMR) technology. Collectively, these activities constitute the OS and will comprise of the following procurement packages;

    • Associated Developments;
    • Early Works;
    • Engineering Services – Engineering Partner;
    • Main Works BOP/MEH & Civils; &
    • Specialist Works – Marine Offloading Facility & Tunnelling.

    This webinar will provide an overview of the Owner’s Scope with focus on the following package;

    • Early Works - Covering the intended procurement approach, scope of works/services and the indicative contracting approach.

    GBE-N may hold further engagement events prior to tender launch to cover each procurement package individually in the future.

    The link and password for the recording of the webinar is below:

    vimeo.com/1223646192 ↗

    Password: GBE-N-OSM-marick-2026

    If you would like a copy of the slides or the questionnaire issued, please email [email protected].

    All further notices and information will be published via Jaggaer, which is GBE-N's e-Sourcing portal. All suppliers interested in this tender are advised to register on this platform.

    Please see GBE-N's Linked In page (www.linkedin.com/company/great-britis… ↗) for further information, and email any queries to [email protected].

  3. Latest notice published50 days ago
    4 Sept 2026, 11:45 BST
  4. Today
    24 Oct 2026
  5. Tender notice expectedin 128 days
    1 Mar 2027, 23:59 GMT
  6. Contract starts
    1 Jun 2028, 00:00 BST

Notice history

4 events · 4 releases on Find a Tender · since 21 May 2026
  1. Pipeline notice published
    21 May 2026, 15:51 BST
    UK1
  2. Pipeline notice published
    19 Aug 2026, 17:13 BST
    UK1
  3. Preliminary market engagement notice published
    20 Aug 2026, 16:05 BST
    UK2
  4. Preliminary market engagement notice published
    4 Sept 2026, 11:45 BST
    UK2
Published amendments (2)

Updating the pipeline notice in line with the pipeline published on https://www.gov.uk/government/publications/great-british-nuclear-commercial-pipeline. This reflects Early Works Earthworks and Civils being merged into one procurement package, with dates and value range updated accordingly. Please note that at this stage, dates, values and other information pertaining to procurement launch and …

This update is to provide access to the market engagement materials after the webinar event was run. The link and password for the recording of the webinar is below: https://vimeo.com/1223646192 Password: GBE-N-OSM-marick-2026 Please email the [email protected] inbox to request the slide deck and questionnaire issued.

Routine re-releases (4)
  • 2026-05: 1 release · 21 May 2026

Commercial outcome & contract awards

Pipeline notice
Awards (0)
No award published
Contracts (0)
No contract published
Bid statistics
No aggregate bid statistics published

Contracting authority & participating public bodies

Great British Energy - Nuclear

Contracting authorityPublic authority - sub-central government GB-PPON: PRCJ-2655-YDML 3-8 Whitehall Place, London, London, SW1A 2EGContact email

Official documents & specifications (4)

Official links; attachments are not copied

Notices published for this procedure