The procurement contact named on the official notice.

The submission route named on the official notice.

National Grid Electricity Transmission PLC and Scottish Hydro Electric Transmission PLC (the "Employers") are jointly developing a HVDC link between the Netherton Hub, west of Peterhead, Scotland and Norfolk, England (the "HVDC Link").

This notice concerns the procurement and award of contract(s) for: • Design, supply, manufacture, install, test and commission 525kV HVDC submarine and underground cable system, including but not limited to: • extruded cable systems at along with all associated cable accessories • HVDC submarine cable supply and complete installation including lay, jointing and burial.

The submarine route length is expected to be in the range of 540 to 580km. • HVDC onshore underground cable system supply, installation and associated civil engineering works as required that will link the Peterhead site in Scotland to the adjacent coast.

The onshore route length of this element is approximately 10 km. • AC cable circa 1km at Peterhead site in Scotland, 3-10km at Norfolk site. • There is an option that it will be routed through a DCSS (DC Switching Station) also to be located within the Netherton Hub • Design, supply but not install the cable that is to be routed onshore between the Lincolnshire coast and Norfolk, England.

The onshore route length of this element is expected to be in the range of 90 to 135km.

This cable will be installed onshore by others. • Jointing of the onshore cable between Lincolnshire and Norfolk, the provision of installation instructions for use by the installation contractor and technical supervision of the onshore cable installation. • Provision of cable spares and storage facilities for cable spares. • Design, engineer, prepare, procure and install HDD (Horizontal Direct Drilling) ducts as required at the landfalls in both Scotland and England. • Front-end engineering design services, in relation to any or all of the aforementioned scope. • The Employers will require the Preferred Bidder to enter a Long-Term Service Agreement (LTSA) for the cable systems, either as part of the main contract or a standalone contract.

This may be structured as an agreement with the Employers either acting jointly or as a Joint Venture, or as separate LTSAs with each Employer with regard to separate sections of the cable.