LONDON–(BUSINESS WIRE)– As Agent Bank, please be advised of the following rate determined on: 8/28/2026 Issue ¦ National Grid Electricity Transmission – Series 22 GBP 75,000,000 FRN Due 28 Sep 2035 ISIN Number ¦ XS0230845207 ISIN Reference ¦ 23084520 Issue Nomin GBP ¦ 75000000 Period ¦ 9/28/2026 to 3/28/2027 Payment Date 3/30/2027 Number of Days ¦ 181 Rate ¦ 4.515586 Denomination GBP ¦ 50000 ¦ 75000000 ¦ Amount Payable per Denomination ¦ 1128.9 ¦ 1693344.82 ¦ Bank