LONDON–(BUSINESS WIRE)– As Agent Bank, please be advised of the following rate determined on: 11/2/2026 Issue ¦ National Grid Gas plc – Series 51 GBP 65,000,000 Index Linked Due 1 May 2037 ISIN Number ¦ XS0287794456 ISIN Reference ¦ 28779445 Issue Nomin GBP ¦ 65000000 Period ¦ 11/1/2026 to 5/1/2027 Payment Date 5/4/2027 Number of Days ¦ 181 Rate ¦ 4.08512 Denomination GBP ¦ 50000 ¦ 65000000 ¦ Amount Payable per Denomination ¦ 1021.28 ¦ 1327664 ¦ Bank of New York