FTS UK public procurement

Preliminary Market Engagement – Sellafield Limited: Network Services

Sellafield Limited

PlannedOCDS ID ocds-h6vhtk-078dc7
Tender value£75,000,0000 awards · 0 contracts

01 Procurement

Tender overview

Updated 22 October 2026
Buyer
Sellafield Limited
Status
Planned
Procurement method
Award under framework
Category
services
CPV classification
Not supplied
Tender period
Not supplied — Not supplied

Description

Sellafield 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.

i

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02 Awards and contracts

Published award records

0 shown

No award object is present in this compiled process yet.

03 Organisations

Buyers, suppliers and other parties

1 parties
Buyer

Sellafield Limited

Hinton House, Birchwood Park Avenue, Warrington, UKD61, WA3 6GR, United Kingdom

GB-PPON PWYP-8439-MZWY

Companies House links appear only for explicit GB-COH identifiers. BritDB does not create company links from a similar name or address.

04 Provenance

Source for this process

Contains public sector information licensed under the Open Government Licence v3.0. Official external links are available only on the source transition page.