Sellafield Limited plans Network Services framework competition worth GBP 75,000,000
Suppliers of network and telecommunication services can engage with Sellafield Limited's preliminary market consultation to shape requirements ahead of a GBP 75,000,000 tender launch expected in July 2027.
Sellafield Limited is considering a call for competition for Network Services under the Network Services 4 (NS4) Framework Agreement (RM6377). The estimated total value of the contract is GBP 75,000,000 excluding VAT or GBP 90,000,000 including VAT, covering a period of 7 years from 1 July 2028 to 30 June 2035. The scope includes external connectivity, corporate data services, core network services, network security services, enterprise telephony services, standalone services, network operations, planning and management, optional services, and third-party contract management. Preliminary market engagement is currently open via the Atamis e-procurement system with an engagement deadline of 12 November 2026, ahead of an anticipated call for competition launch in July 2027.
Suppliers operating in connectivity, network security, and enterprise telephony services may find opportunities to position their offerings before the formal call for competition opens. Engaging with the Request for Information via Atamis by 12 November 2026 allows participants to provide feedback that may shape the final procurement strategy and requirements.
- Sellafield Limited publishes a preliminary market engagement notice for Network Services under the Network Services 4 Framework Agreement.
- Suppliers submit feedback and register interest via the Atamis e-procurement system by 12 November 2026.
- Sellafield Limited uses gathered information to assess market capability and refine its procurement strategy.
- A call for competition is launched in July 2027.
- Contract is awarded for a 7-year term commencing on 1 July 2028.
- Successful suppliers will establish a network operations centre and integrate external connectivity, corporate data, and security services across the estate.
- Third-party contracts may be novated, replaced, or managed on behalf of Sellafield Limited as part of the service delivery.
- The official launch of the call for competition in July 2027.
- Any updates or clarifications published on the Atamis e-procurement system following the RFI deadline.
- If you supply network and connectivity services, register on the Atamis system and submit feedback to the Request for Information by 12 November 2026.
- If you target public sector framework opportunities, review the Network Services 4 (NS4) Framework Agreement (RM6377) Lots 1, 2, and 3 to align your service offerings with Sellafield Limited's stated scope.
Possible consequences, not predictions. Window: 6 to 18 months.
- What specific supplier feedback will be integrated into the final tender specifications following the Request for Information?
- Will the procurement be structured into distinct sub-lots or evaluated as a single integrated package?
- What are the precise vendor accreditation and security clearance requirements for managing operational technology networks on the Sellafield estate?
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Sources
- Event date
- 22 October 2026
- Detected by BuzzBaboon
- 2026-10-26 06:04 UTC
- Last updated
- 2026-11-02 06:38 UTC
- Verification status
- primary-source-read
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