LONDON–(BUSINESS WIRE)– As Agent Bank, please be advised of the following rate determined on: 11/2/2026 Issue ¦ National Grid Electricity Transmission plc – Series 48 GBP 150,000,000 Index-Linked FRN Due 2 May 2039 ISIN Number ¦ XS0294583322 ISIN Reference ¦ 29458332 Issue Nomin GBP ¦ 150000000 Period ¦ 11/2/2026 to 5/2/2027 Payment Date 5/4/2027 Number of Days ¦ 181 Rate ¦ 3.936 Denomination GBP ¦ 50000 ¦ 150000000 ¦ Amount Payable per Denomination ¦ 984 ¦ 2952000 ¦