Official UK procurement notice
Civils Consultancy Support to the Shaft and Silo Advanced Transition Works
Authority: Nuclear Restoration Services Limited (Public body)
What is being bought
Published requirement descriptionProvision of Civil, Structural and Architectural (CS&A) consultancy services in support of the Advanced Transition Works (ATW) at the Shaft and Silo facility. The scope includes technical support to ATW Construction Phase 2, the Shaft Headworks and ATW Construction Phase 3. The scope includes technical support for reinforced concrete detailing, construction phase design interpretation, resolution of site queries, temporary works design, and integration of learning from previous phases. The Consultant will also provide updated design documentation, attend project meetings, and support the planning and implementation of future construction phases including Shaft Headworks and ATW Phase 3.
The lotProcurement structure
single lot · no lot value publishedProcedure terms & legal framework
From the official record- Procedure method
- Direct award
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Notice status
- Awarded without competition
- Procurement threshold
- Unspecified in notice
- Regulatory regime
- Standard
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Direct award (no call for competition)
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 15 Dec 2025, 13:15 GMT
- Last source update
- 25 Mar 2026, 08:24 GMT
- Authority reference
C27446- FTS notice number
2026/S 000-027099- Latest notice
- Contract details notice (UK7)
- Delivery area
- Not published
- Official registry OCID
ocds-h6vhtk-05f5afFind a Tender
- Why no open competition
- Single Suppliers Unique Work Art Performance
- Published justification
The consultant developed the detailed design and build to print drawings for the advanced transition works. During the construction phase the consultant is required to be available to respond to technical queries that may arise on their design. To potentially appoint another consultant at this stage may inadvertently introduce design safety risks as they would not be aware of the original design intent or have been involved in the complex design integration with mechanical and electrical designers. There would also be a disproportionate mobilisation period and knowledge transfer from the incumbent to the potentially new contractor that would outweigh any perceived commercial benefits.
- Risks
There is a risk that delays to the physical Advanced Transition Works, Construction Works may occur, which would necessitate an extension to this Contract
There is a risk that delays to the Shaft Headworks trials and concrete cutting at the shaft top may occur, which would necessitate an extension to this Contract
During the term of this Contract, the next phase of Shaft & Silo Design is expected to be awarded, This may have implication for the ATW Design, requiring the Consultant to assess and respond to any resulting impacts on the ATW Works
There is a risk that the design life of the ATW needs to be further increased potentially changing the design and specification of the Works, requiring the Consultant to modify the design accordingly
The complexity of reinforced concrete works may lead to higher than forecast TQ's. While the volume is uncertain, the risk is foreseeable and could impact the level of design support required.
How it was run
Official notice- Submission deadline
- —
Timeline
16 Mar 2026 → 25 Mar 2026 · 2 dates- Standstill ends223 days ago16 Mar 2026, 23:59 GMT
- Notice published215 days ago25 Mar 2026, 08:24 GMT
Notice history
4 events · 3 releases on Find a Tender · since 15 Dec 2025- Transparency notice published15 Dec 2025, 13:15 GMTUK5
- Contract award notice published5 Mar 2026, 15:51 GMTUK6
- Contract signature expected19 Mar 2026, 23:59 GMTscheduled
- Contract details notice published25 Mar 2026, 08:24 GMTUK7
Commercial outcome & contract awards
Published awards, contracts and bid statistics, not a forecast| Awarded to | Value | Date | Status |
|---|---|---|---|
| Sanderson Watts Associates Ltd20 Mar 2026 – 30 Aug 2028 · up to 31 Oct 2028Extensions: Extensions permissable in the case of risk materialisation. · Options: Extensions in the event of prolongation of services being required should risks materialise. NEC4 secondary options are likely to include Options X2 Changes in Law, X18 Financial cap, YUK3 Rights of Third parties. | £270,000same award published again · counted once | 3 Mar 2026standstill to 16 Mar 2026 | Standstill |
| Sanderson Watts Associates Ltd | £270,000 † | — | Awarded |
Contracts
Civils Consultancy Support to the Shaft and Silo Advanced Transition Works · Sanderson Watts Associates Ltd
- Signed
- 23 Mar 2026
- Value
- £270,000
- Period
- 24 Mar 2026 – 24 Aug 2028
- Status
- active
No agreed KPIs: was not deemed necessary as a consultancy contract which is outcome focused with outputs defined through agreed deliverables.
Contracting authority & participating public bodies
Bidders & participating suppliers
1 commercial party on the notice- Sanderson Watts Associates LimitedAwarded supplier
Official documents & specifications (3)
Official links; attachments are not copiedNotices published for this procedure
- Contract details notice Contract details notice on Find a Tender
- Contract award notice Contract award notice on Find a Tender
- Transparency notice Transparency notice on Find a Tender