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. The proposed scope of the Network Services is as follows: • External Connectivity • Corporate Data Services • Core Network Services • Network Security Services • Enterprise Telephony Services • Standalone Services • Network Operations, Planning and Management • Optional Services • Third-Party Contract Management