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Official procurement procedure

for the completion of the Integrated Control & Safety System (ICSS) for the H3AT Tritium Facility at Culham

No classification published
Location not published
Published value
Not published
Submission deadline Not published
Lots published1
Procurement Executive Summary
AI & Search Synopsis
Generated from official OCDS record
Tenderline Synopsis: UK Atomic Energy Authority: "for the completion of the Integrated Control & Safety System (ICSS) for the H3AT Tritium Facility at Culham". Published status: complete. Published value: Value not published. 1 published lot. Submission deadline not published. See the official notice for participation instructions.
Contracting AuthorityUK Atomic Energy AuthorityScope & CategoriesNot publishedSubmission Window
complete
No deadline published
Submission GatewayDirect notice routeLegal Basis & RegimeStandard procurementEstimated Value (exc. VAT)Not published
Bidder Intelligence · Authority Profile: UK Atomic Energy Authority
Market Analytics
View Authority Profile →
Derived from OCDS awards & bid statistics
Published history for UK Atomic Energy Authority. These figures describe retained records, not a forecast of bids or a measure of buyer bias.
Published-to-award variance
Not availableInsufficient comparable data
Requires at least 5 comparable procedures
Competition Density
7.3Bids / Report
6.3% of reports have one bid
Supplier ConcentrationLow Concentration
Henham Strategy Ltd.Top vendor: 20.8% of attributable value
Payment Terms
Check noticePublished terms
Payment obligations depend on the applicable regime and contract. Consult the official documents.
Coverage: 79 active published awards; 16 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 Unpublished data stays unknown.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 With This Authority:
Supplier NameHistoric AwardsAttributable GBP Value
Henham Strategy Ltd.1 win£180,000
ARCHER TECHNICOAT LIMITED1 win£147,000
ANSYS UK LIMITED1 win£81,500
COMSOL LIMITED1 win£81,500
BATHWICK ELECTRICAL DESIGN LIMITED1 win£81,500
Procedure terms
Contracting AuthorityUK Atomic Energy Authority
Procedure methodNot published
Procurement categoryNot published
Statuscomplete
Framework / DPSNot published
CompetitionNot published
Above thresholdNot published
Legal basisNot published
Tender period startsNot published
Clarification deadlineNot published
Electronic submissionNot published
Submission languagesNot published
Published2 Jul 2026, 14:27 BST
Last source update2 Jul 2026, 14:27 BST
Recurring procurementNot published
ClassificationNot published
Delivery areaLocation not published
OCIDocds-h6vhtk-06c27d
What is being bought
Scope of supply is for the continued design development, procurement, manufacture, testing, installation and verification activities for the H3AT Integrated Control and Safety System (ICS).
What changed
From the official release history
  1. Status changed to complete
    2 Jul 2026, 14:27 BST
  2. Official notice release published
    2 Jul 2026, 14:27 BST
  3. Buyer information updated
    2 Jul 2026, 14:27 BST
Lots and requirements (1)
Published by the contracting authority
  • Lot 1 · #LOT-0000
    Individual lot title not published
    complete
    Published valueNot published
    The source published no individual title or description for this lot.
    Contract periodNot published
    EligibilityNot published
    Options / renewalNot published
Timeline
  1. Procedure published
    2 Jul 2026, 14:27 BST
  2. Award pending
    Not published · £3,250,000
Commercial outcome and competition
Awards
Bilfinger UK Limiited
£3,250,000 · Not published · pending
ContractsNo contract published
Bid statisticsNo aggregate bid statistics published
Buyer and organisations in this procedure

UK Atomic Energy Authority

Contracting authority GB-PPON-PLJV-1169-JTDD
View buyer profile

  • UK Atomic Energy Authority
    buyer

    GB-PPON: PLJV-1169-JTDD
    Culham Science Centre, Oxfordshire, UKJ14, OX14 3DB, GB
    James.Phillpott@ukaea.uk

  • Bilfinger UK Limiited
    supplier

    GB-PPON: PWRZ-9254-NNBJ
    Wilson House, Kelburn Court, Birchwood, Warrington, UKD61, WA3 6UT, GB
    rob.taylor@bilfinger.com
Award and contract changes
Documents (1)
Official links; attachments are not copied

  • Not published

    tender
    conflictOfInterest
Related procedures (0)
No data
No related procedures published
Planning and rationale
Planning budgetNot published
No-engagement rationaleNot published
Procedure rationaleThis notice provides transparency of UKAEA’s intention to award a contract to Bilfinger UK Limited (BUK) for the completion of the Integrated Control & Safety System (ICSS) for the H3AT Tritium Facility at Culham. The ICSS scope forms a critical part of the H3AT facility, covering the design finalisation, manufacture, installation, testing and commissioning of the control, interlock and safety systems required to safely operate the tritium plant. BUK was originally engaged as a specialist subcontractor under a wider contract with a previous main contractor (DBD), with direct responsibility for delivering the ICSS scope. Following the termination of the DBD contract, the ICSS works remain partially complete (approximately 50%) and have been significantly progressed by BUK. UKAEA intends to award a direct contract to BUK to complete the remaining works for the following reasons: • Proprietary Know-How & Design Continuity The ICSS design, software configuration, control architecture, and technical associated documentation have been uniquely developed and partially implemented by BUK, and are specific to their proprietary systems, tooling, and engineering approach. • Safety & Technical Risk Assumption : A change of supplier would require a third party to assume legal and technical liability to take over, reinterpret, and revalidate partially completed design and safety-critical systems, including Safety Integrity Level (SIL )-rated elements, which would introduce material technical and programme risk that cannot be mitigated by an alternative party • System Incompatibility: The ICSS must seamlessly integrate with existing plant systems and previously installed components already delivered by BUK. Substituting the supplier at this stage introduces in incompatibility risks across hardware, software, interfaces and safety validation activities. • Disproportionate Duplication & Rework: Replacement of BUK would lead to significant and wasteful rework, duplication of design assurance and testing, and potential invalidation of completed Factory Acceptance Testing (FAT) and statutory safety lifecycle deliverables. • Operational Hardship: These impacts would create disproportionate technical and operational difficulties, particularly in relation to safety assurance, system integration, and commissioning of a nuclear-grade system integration and final commissioning of the facility. On this basis, UKAEA considers that: • The proposed contract represents a partial continuation and completion of existing works by the original delivery party, and • Changing supplier would result in incompatible outcomes void existing warranties/assurances and cause disproportionate technical difficulties in operation and maintenance. The proposed direct award is therefore justified in accordance with the Procurement Act 2023, Schedule 5, Clause 7 (a) and (b). In addition, due to the unique level of system integration, the proprietary nature of the partially completed design, and BUK’s ownership of detailed implementation knowledge, there is an absence of alternatives who can complete the works without significant risk to the facility’s safety case, delay, and substantial duplication of cost, further supporting reliance on Schedule 5 provisions.