Official UK procurement notice
Preliminary Market Engagement – Sellafield Limited: Network Services
Authority: Sellafield Limited (Public body)
What is being bought
Published requirement descriptionSellafield Ltd is considering a call for competition for Network Services under the Network Services 4 (NS4) Framework Agreement (RM6377) Lot 1 Internet Connectivity Services (WAN), Lot 2 Local Connectivity Services (LAN), and Lot 3 Voice and Unified Communications. We anticipate launching this call for competition in July 2027.
Sellafield Ltd is undertaking Preliminary Market Engagement to provide suppliers with an understanding of the Network Services opportunity and inviting feedback through a Request for Information (RFI), on key aspects of the requirement. The information gathered will help Sellafield Ltd assess market capability and capacity, validate and, where appropriate, refine its requirements, and inform its procurement strategy and approach.
The proposed scope of the Network Services is as follows:
External Connectivity
The provision of circuit only connectivity from internal Sellafield networks to external networks and data centres including MPLS, DCI, internet, satellite and SIP connectivity.
Corporate Data Services
The provision of local, wireless, data centre networking and managed WAN overlay services supporting corporate, operational technology and business-critical applications across the Sellafield estate, including connectivity, routing, security, traffic management, application delivery and WAN management.
Core Network Services
The provision of shared network infrastructure services enabling secure and resilient operation of the Sellafield estate, including IP address allocation and management, network configuration, load balancing and time services.
Network Security Services
The provision of network-based access control, threat protection and gateway security services for users, devices, applications and internet connectivity across the Sellafield estate.
Enterprise Telephony Services
The provision of enterprise-wide voice communications services, encompassing, VoIP, analogue, contact centre and plant critical telephony alongside integrated voice applications and voice gateway services for connectivity to external voice networks and platforms.
Standalone Services
The provision of standalone, ad-hoc voice and data services, including fibre to the cabinet, (FTTC), fibre to the premises (FTTP) and single order ADSL (SOADSL) broadband connectivity and telephony services.
Network Operations, Planning and Management
The provision of network administration, planning, integration and management services and the setup, management, maintenance and operation of a network operations centre (NOC) to operate the Network Services.
Optional Services
In addition to the baseline services and agreed service instructions, the supplier shall provide optional services, including the delivery of projects and the provision of hardware and software, where required by Sellafield.
Third-Party Contract Management
The provision of new third-party contracts necessary for the provision of the Network Services where required by Sellafield. This shall also include acting as an agent, to manage and operate third-party contracts on behalf of Sellafield or novate or replace existing third-party contracts where required by Sellafield.
CPV: Computer network services · IP telephone services · Installation of telephone lines · Local area network services · Network equipment · Networks · Public-telephone services · Shared-business telephone network services · Telephone and data transmission services · Telephone network · Telephone network equipment · Telephone network maintenance services · +2 more
The lotProcurement structure
single lot · no lot value publishedPipeline intelligence · planning stage: how this market runs before the tender is published
How Sellafield Limited buys Networks (CPV 3240), and who usually turns up
Sellafield Limited’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: Networks (CPV 3240) →
How the contest usually goes
Winner shares use published awards; bid and price charts use contested lots.
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.
Small firms have won here. Neither number says whether you qualify; it describes who has been winning.
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.
Most of this buyer’s recorded winners were registered outside the region where that award was delivered.
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.
Half of these awards have an award date within 73 days of the bid deadline.
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.
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.
1 bid11% / 10%
2–328% / 30%
4–644% / 40%
7+17% / 20%
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.
Below estimate44%
Within ±2%56%
Above estimate0%
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.
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 5033Published estimate£75m
This lot is listed as CPV 5033. The table above uses the notice category.
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 137 past lots.
A forecast, not a list of bidders.
1 bid11%
2–335%
4–621%
7+33%
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.
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.
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.
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
- Award under framework
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Services
- 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
- 22 Oct 2026, 12:06 BST
- Last source update
- 22 Oct 2026, 12:29 BST
- Authority reference
C11532- FTS notice number
2026/S 000-099945- Latest notice
- Preliminary market engagement notice (UK2)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-078dc7Find a Tender
How it was run
Official notice- Submission deadline
- —
Timeline
22 Oct 2026 → 1 Jul 2028 · 4 dates- Planning notice published3 days ago22 Oct 2026, 12:06 BST
- Today25 Oct 2026
- Market engagementin 18 days12 Nov 2026, 23:59 GMT
Sellafield Ltd is conducting this Request for Information (RFI) to offer potential participants the opportunity to engage with Sellafield Ltd to better understand the contract opportunity and provide feedback. This feedback will inform and shape the procurement of the Network Services.
To obtain further information and provide feedback, suppliers must register their interest via the Nuclear Decommissioning Authority and Sellafield Ltd E-procurement system, Atamis.
This can be found at the following address: atamis-2464.my.site.com/s/Welcome ↗.
Upon registration on Atamis, suppliers will be able to access all relevant documentation and submit their feedback using record reference “C32984, Preliminary Market Engagement – Network Services”. The deadline for submissions is at 23:59 GMT on 12 November 2026.
- Tender notice expectedin 249 days1 Jul 2027, 23:59 BST
- Contract starts1 Jul 2028, 00:00 BST
Notice history
2 events · 2 releases on Find a Tender · since 22 Oct 2026- Pipeline notice published22 Oct 2026, 12:06 BSTUK1
- Preliminary market engagement notice published22 Oct 2026, 12:29 BSTUK2
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
Official documents & specifications (2)
Official links; attachments are not copiedNotices published for this procedure
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender
- Pipeline notice Pipeline notice on Find a Tender