| 13/04/26 | 07:00:06 | 13 Apr 2026 | | Pre-Close Update Ahead of 25/26 Full Year Results |
| 08/04/26 | 15:00:00 | 8 Apr 2026 | | Director/PDMR Shareholding |
| 01/04/26 | 14:30:00 | 1 Apr 2026 | | Total Voting Rights |
| 10/03/26 | 13:00:00 | 10 Mar 2026 | | Director/PDMR Shareholding |
| 02/03/26 | 12:30:00 | 2 Mar 2026 | | Total Voting Rights |
| 02/03/26 | 07:00:15 | 2 Mar 2026 | | Upgraded 5-year framework and RIIO-T3 acceptance |
| 10/02/26 | 16:00:00 | 10 Feb 2026 | | Director/PDMR Shareholding |
| 04/02/26 | 15:30:00 | 4 Feb 2026 | | Director/PDMR Shareholding |
| 02/02/26 | 13:30:00 | 2 Feb 2026 | | Total Voting Rights |
| 23/01/26 | 13:00:00 | 23 Jan 2026 | | Publication of a Supplementary Prospectus |
| 19/01/26 | 13:30:00 | 19 Jan 2026 | | Director/PDMR Shareholding |
| 16/01/26 | 11:45:00 | 16 Jan 2026 | | Director/PDMR Shareholding |
| 13/01/26 | 16:30:00 | 13 Jan 2026 | | Voting Rights and Capital Update |
| 12/01/26 | 09:45:00 | 12 Jan 2026 | | National Grid plc Scrip Dividend |
| 08/01/26 | 13:30:00 | 8 Jan 2026 | | Director/PDMR Shareholding |
| 02/01/26 | 12:30:00 | 2 Jan 2026 | | Total Voting Rights |
| 11/12/25 | 15:00:01 | 11 Dec 2025 | | Outcome of audit tender process |
| 09/12/25 | 17:10:00 | 9 Dec 2025 | | Director/PDMR Shareholding |
| 04/12/25 | 07:02:28 | 4 Dec 2025 | | Ofgem's RIIO-T3 Final Determination published |
| 03/12/25 | 16:50:01 | 3 Dec 2025 | | Director/PDMR Shareholding |
| 01/12/25 | 16:50:00 | 1 Dec 2025 | | Total Voting Rights |
| 28/11/25 | 11:55:36 | 28 Nov 2025 | | Completion of sale of Grain LNG |
| 27/11/25 | 16:30:01 | 27 Nov 2025 | | Scrip Dividend for 2025/26 Interim Dividend |
| 25/11/25 | 17:20:39 | 25 Nov 2025 | | Holding(s) in Company |
| 18/11/25 | 11:00:01 | 18 Nov 2025 | | Director/PDMR Shareholding |
| 17/11/25 | 17:00:55 | 17 Nov 2025 | | Holding(s) in Company |
| 10/11/25 | 17:26:32 | 10 Nov 2025 | | Director/PDMR Shareholding |
| 06/11/25 | 07:00:10 | 6 Nov 2025 | | National Grid plc Half-Year Results 2025/26 |
| 03/11/25 | 15:00:01 | 3 Nov 2025 | | Total Voting Rights |
| 08/10/25 | 15:01:27 | 8 Oct 2025 | | Director/PDMR Shareholding |
| 02/10/25 | 07:00:03 | 2 Oct 2025 | | Pre-Close Update Ahead of HY 2025/26 Results |
| 01/10/25 | 13:00:01 | 1 Oct 2025 | | Total Voting Rights |
| 24/09/25 | 15:23:11 | 24 Sept 2025 | | Director Declaration |
| 09/09/25 | 15:12:03 | 9 Sept 2025 | | Director/PDMR Shareholding |
| 02/09/25 | 07:00:11 | 2 Sept 2025 | | Director/PDMR Shareholding |
| 01/09/25 | 10:00:00 | 1 Sept 2025 | | Total Voting Rights |
| 27/08/25 | 07:00:08 | 27 Aug 2025 | | Response to Ofgem's RIIO-ET3 Draft Determination |
| 19/08/25 | 14:00:00 | 19 Aug 2025 | | Publication of a Prospectus |
| 14/08/25 | 07:00:10 | 14 Aug 2025 | | Sale of Grain LNG |
| 08/08/25 | 14:45:00 | 8 Aug 2025 | | Director/PDMR Shareholding |
| 01/08/25 | 12:45:01 | 1 Aug 2025 | | Total Voting Rights |
| 21/07/25 | 16:15:00 | 21 Jul 2025 | | Director/PDMR Shareholding |
| 17/07/25 | 14:15:00 | 17 Jul 2025 | | Voting Rights and Capital Update |
| 16/07/25 | 09:45:00 | 16 Jul 2025 | | National Grid plc Scrip Dividend |
| 09/07/25 | 14:15:00 | 9 Jul 2025 | | Result of AGM |
| 08/07/25 | 12:15:00 | 8 Jul 2025 | | Director/PDMR Shareholding |
| 03/07/25 | 14:30:00 | 3 Jul 2025 | | Director/PDMR Shareholding |
| 01/07/25 | 12:15:00 | 1 Jul 2025 | | Total Voting Rights |
| 01/07/25 | 07:10:25 | 1 Jul 2025 | | Ofgem’s Draft Determination for RIIO-ET3 |
| 24/06/25 | 17:56:06 | 24 Jun 2025 | | Director/PDMR Shareholding |
