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#h6vhtk-0361bf
Published 22 Apr 2026, 12:28 BST
Official UK Procurement Procedure
STEP Construction Partner (CP)
Construction consultancy services
Construction management services
Construction project management services
+17 more
UK
Published value
Not published
Submission deadline
Open opportunity
Lots published
1
Contract duration
Standard
Electronic Sourcing Gateway:
Published portal
What is being bought & procurement scope
Procurement Scope & Specification
Executive Summary: United Kingdom Fusion Energy: "STEP Construction Partner (CP)". Published status: complete. Published value: Value not published. 1 published lot. Submission deadline not published. See the official notice for participation instructions.
Official Requirement Description:
UKIFS (now UKFE) has conducted this Procurement for a Construction Partner, who, together with a Fusion Partner (determined to be United Kingdom Atomic Energy Authority (UKAEA)), will bring together and develop extensive industrial capabilities to design and build a UK prototype fusion energy plant capable of delivering net-energy to the grid, and build a world-leading fusion delivery industry.
The Procurement was originally divided into two lots:
• Lot 1: Engineering Partner (EP)
• Lot 2: Construction Partner (CP)
However, Lot 1 – EP has since been cancelled. Lot 2 – CP is now the only Lot included in this Procurement exercise.
The contract term for Lot 2 will expire 31 March 2029, followed by three (3) optional extension periods of four (4), six (6) and seven (7) years.
UKFE will have the right to exercise an extension option at six (6) months’ notice. The maximum contract duration will be twenty (20) years with an estimated value of £10,000,000,000 across this period.
Lots and requirements (1)
Procurement Structure
- Lot 1 · #2Construction PartnercancelledPublished valueNot publishedThe Construction Partner’s (CP) primary responsibility will be to collaboratively provide the capability to drive the integrated design of the overall layout, buildings, infrastructure, onsite and offsite facilities of the STEP Prototype Plant (SPP) to fulfil the support, enclosure and environmental requirements of the operational plant. The CP will then purchase, fabricate, deliver and install all elements of the designed facilities utilising existing and new supply chains, directly sourced or contracted resources. The CP’s responsibilities will include (but not be limited to) managing the overall health, safety, environment and security systems applicable to all parties engaged at the site. Additional information: Lot 1 for the Engineering Partner (EP) was cancelled and will not be awarded. Only Lot 2 for the Construction Partner (CP) forms part of this notice.Contract period:Not publishedEligibility:Not published
Qualification snapshot & criteria
Go / No-Go Decision Box
Evaluation weighting
Corporate: Economic Value: 15%
Corporate: Social Value: 10%
Programme: 17%
Technical: 18%
Cultural: Behavioural and Collaborative Assessment: 15%
price: 25%
Incumbent & Market Position
Top Retained Vendor (Authority Spend)ILIOSHolds 100% of historical attributable spend
Entry requirements & qualification
Turnover Benchmark
Insurance Commitments (No Upfront Purchase Needed)
Accreditations & Security Vetting
Published track record for United Kingdom Fusion Energy. These figures describe rolling 24 months, not a forecast of bids or a measure of buyer bias.
Avg price drop
Not availableEarly / insufficient sample
Competition Density
3Bids / Report (median)
Supplier Concentration
Published spend
£10,000,000,000Historical spend
Methodology & coverage notes (1 active published awards)
Coverage: 1 active published awards; 1 bid reports (which may be per lot). Supplier values exclude multi-supplier awards, frameworks and DPS, and use GBP only. They are published award values, not payments. Published-to-award variance compares single-lot, single-award, single-supplier GBP procedures with explicitly non-framework/non-DPS status; increases remain in the average. Unpublished data stays unknown. Awarded suppliers are winners, not all bidders.
Historical Awarded Suppliers in this Category (CPV 45):
Supplier Name | Historic Awards | Attributable Value | Avg. Price Discount |
|---|---|---|---|
| ILIOS | 1 win | £10,000,000,000 | No published budget |
Sector Market Benchmark & Opportunity Radar
CPV 45 · UK Sector Analysis
Observed CPV-sector evidence
Prepared 7 Sept 2026, 14:18 BST
Observed CPV-sector evidence where it exists, with clearly labelled UK all-sector context for sparse fields; this is market context, not a bid forecast.
Median Winning Discount
0.63%
Typical Bids Received
4reported bids
Decision Velocity
~48 days
Notice Stability
15 updates
Top Contenders in this Sector (CPV 45)
Supplier | Awards won | Total awarded value | Avg. winning discount |
|---|---|---|---|
MJ Church (Plant) LtdCRN: 1856955 | 4 contracts | £21,191,000,000 | At ceiling / not disclosed |
MORGAN SINDALL CONSTRUCTION & INFRASTRUCTURE LTDCRN: Morgan Sindall Construction Ltd | 103 contracts | £15,239,793,340 | At ceiling / not disclosed |
ILIOSCRN: 1157281 | 1 contract | £10,000,000,000 | At ceiling / not disclosed |
Wates Construction LimitedCRN: PHQT-5476-TZBR | 50 contracts | £9,923,245,228 | -0% below budget |
EQUANS Regeneration LimitedCRN: PDWQ-6852-QYVW | 141 contracts | £8,388,365,822 | At ceiling / not disclosed |
Mclaren Construction LimitedCRN: PDDX-6189-DNXD | 16 contracts | £8,050,000,000 | At ceiling / not disclosed |
JOHN GRAHAM CONSTRUCTION LIMITEDCRN: NI003503 | 41 contracts | £7,886,911,783 | At ceiling / not disclosed |
Bouygues UKCRN: 03460378 | 5 contracts | £7,750,000,000 | At ceiling / not disclosed |
Kier ConstructionCRN: PYYQ-3271-CYND | 73 contracts | £7,595,703,176 | At ceiling / not disclosed |
Skanska Construction UK LimitedCRN: 04101344 | 14 contracts | £7,455,224,403 | -0% below budget |
Comparable Published Opportunities & Re-tender Precedents
Historic records ranked from matching published evidence. They serve as research precedents for contract scoping, specifications, and previous awardees.
Published procedure | Published value | Matching evidence |
|---|---|---|
Prisoners Building Homes - Professional, Technical and Programme Delivery Support ServicesLOCAL PARTNERSHIPS LLP · 1 Sept 2026, 17:15 BST | £6,000,000 | same CPV family same region |
Technical Support Services 2026Procurement for Housing · 2 Sept 2026, 14:08 BST | £260,000,000 | same CPV family same region |
YPO - 001284 Community & Healthcare Technology Equipment & Associated ServicesYorkshire Purchasing Organisation · 4 Sept 2026, 12:34 BST | £600,000,000 | same CPV family same region |
Public Sector Construction Works 2NHS Shared Business Services Limited · 3 Sept 2026, 15:14 BST | £750,000,000 | same CPV family same region |
Specialist Technical and Commercial Advisory for Rail and Other Transport Systems Framework (STARFour)Department for Transport · 1 Sept 2026, 16:44 BST | £350,000,000 | same CPV family same region |
Method: tender-intelligence-v1. Empirical OCDS facts and cross-sector percentiles; missing fields remain unrecorded.
Procedure terms & legal framework
| Procedure method | Standard public procedure | Legal basis | Standard UK Procurement Rules | Procurement category | Services |
|---|---|---|---|---|---|
| Notice status | complete | Procurement threshold | Sub-threshold | Regulatory regime | Standard commercial regime |
| Commercial structure | Stand-alone contract (No framework) | Competition type | Competitive procedure | GPA WTO covered | Unspecified in notice |
| Recurring procurement | No (One-off requirement) | First published | 22 Apr 2026, 12:28 BST | Last source update | 22 Apr 2026, 12:28 BST |
| Classification (CPV) | Construction consultancy services, Construction management services, Construction project management services, Construction supervision services, Construction work for engineering works except bridges, tunnels, shafts and subways, Construction work for industrial buildings, Construction work for manufacturing plant, Construction work for nuclear reactors, Construction work for power plant, Construction works for power plants and heating plants, Construction-related services, Construction-site supervision services, Engineering works and construction works, Laboratory building construction work, Nuclear-power station construction work, Procurement consultancy services, Structures construction work, Works for complete or part construction and civil engineering work | ||||
| Delivery area | UK | ||||
| Official Registry OCID | ocds-h6vhtk-0361bf | ||||
Timeline
- Procedure published
22 Apr 2026, 12:28 BST - Award active
Not published · Not published - Contract active
Signed 2 Apr 2026, 00:00 BST · £10,000,000,000
Commercial outcome and contract awards
Awards (1) ILIOS Not published · Not published · active |
Contracts (1) STEP Engineering Partner and Construction Partner £10,000,000,000 · signed 2 Apr 2026, 00:00 BST · active |
Bid statistics bids: 3 (lot 2) electronicBids: 3 (lot 2) smeBids: 0 (lot 2) |
Bidding dynamics & price outcome Total bids received: 3 (0 from SMEs) |
Notice history
From official release and amendment events
- Status changed to complete
22 Apr 2026, 12:28 BST - Official notice release published
22 Apr 2026, 12:28 BST - Buyer information updated
22 Apr 2026, 12:28 BST - Official notice release published
12 Aug 2024, 17:19 BST - tender value changed
8 Jul 2024, 12:19 BST - Status changed to published status
8 Jul 2024, 12:19 BST - Official notice release published
8 Jul 2024, 12:19 BST - Submission deadline changed to published date
8 Jul 2024, 12:19 BST - Published value updated to £20,000,000,000
22 May 2024, 14:19 BST - Status changed to active
22 May 2024, 14:19 BST - Official notice release published
22 May 2024, 14:19 BST - Submission deadline changed to 12 Jul 2024, 13:00 BST
22 May 2024, 14:19 BST - Buyer information updated
22 May 2024, 14:19 BST - tender value changed
18 Apr 2023, 11:24 BST - Status changed to published status
18 Apr 2023, 11:24 BST - Official notice release published
18 Apr 2023, 11:24 BST - Published value updated to £20,000,000,000
10 Nov 2022, 17:07 GMT - Status changed to planned
10 Nov 2022, 17:07 GMT - Official notice release published
10 Nov 2022, 17:07 GMT - Official notice release published
25 Aug 2022, 08:57 BST - tender value changed
24 Aug 2022, 11:42 BST - Status changed to published status
24 Aug 2022, 11:42 BST - Official notice release published
24 Aug 2022, 11:42 BST - Published value updated to £10,000,000,000
22 Aug 2022, 17:42 BST - Status changed to planned
22 Aug 2022, 17:42 BST - Official notice release published
22 Aug 2022, 17:42 BST - Buyer information updated
22 Aug 2022, 17:42 BST
Buyer and organisations in this procedure
United Kingdom Fusion Energy
Contracting authority
Official Documents & Specifications (0)
Official links; attachments are not copied
No linked documents are published