| 26/06/17 | | 18:41:23 | 26 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 23/06/17 | | 18:32:52 | 23 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 22/06/17 | | 18:38:26 | 22 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 21/06/17 | | 18:37:19 | 21 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 21/06/17 | | 17:00:01 | 21 Jun 2017 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 20/06/17 | | 18:22:19 | 20 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 20/06/17 | | 17:00:01 | 20 Jun 2017 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 19/06/17 | | 18:41:50 | 19 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 16/06/17 | | 18:27:16 | 16 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 15/06/17 | | 18:46:38 | 15 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 15/06/17 | | 18:14:24 | 15 Jun 2017 | | | Director Declaration | National Grid PLC | RNS |
| 14/06/17 | | 18:29:41 | 14 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 13/06/17 | | 18:25:05 | 13 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 13/06/17 | | 13:47:52 | 13 Jun 2017 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 12/06/17 | | 18:40:06 | 12 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 09/06/17 | | 18:12:53 | 9 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 08/06/17 | | 18:42:19 | 8 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 08/06/17 | | 14:00:01 | 8 Jun 2017 | | | Scrip Dividend for 2016/17 Final Dividend | National Grid PLC | RNS |
| 07/06/17 | | 18:36:04 | 7 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 06/06/17 | | 18:36:25 | 6 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 06/06/17 | | 18:30:18 | 6 Jun 2017 | | | Holding(s) in Company | National Grid PLC | RNS |
| 06/06/17 | | 12:51:18 | 6 Jun 2017 | | | Publication of Annual Report and Accounts | National Grid PLC | RNS |
| 05/06/17 | | 18:37:00 | 5 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 02/06/17 | | 18:46:30 | 2 Jun 2017 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 02/06/17 | | 08:00:03 | 2 Jun 2017 | | | Commencement of share buy-back programme | National Grid PLC | RNS |
| 01/06/17 | | 12:05:03 | 1 Jun 2017 | | | Total Voting Rights | National Grid PLC | RNS |
| 31/05/17 | | 15:28:18 | 31 May 2017 | | | Holding(s) in Company | National Grid PLC | RNS |
| 23/05/17 | | 10:10:03 | 23 May 2017 | | | Voting Rights and Capital Update | National Grid PLC | RNS |
| 22/05/17 | | 09:15:23 | 22 May 2017 | | | Share Consolidation and Total Voting Rights | National Grid PLC | RNS |
| 19/05/17 | | 13:30:18 | 19 May 2017 | | | General Meeting poll results | National Grid PLC | RNS |
| 18/05/17 | | 08:00:17 | 18 May 2017 | | | Results for the year ended 31 MARCH 2017 | National Grid PLC | RNS |
| 17/05/17 | | 09:36:54 | 17 May 2017 | | | Director's Other Appointment | National Grid PLC | RNS |
| 09/05/17 | | 12:31:44 | 9 May 2017 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 02/05/17 | | 12:53:37 | 2 May 2017 | | | Total Voting Rights | National Grid PLC | RNS |
| 28/04/17 | | 16:11:40 | 28 Apr 2017 | | | Upstate New York Rate Filing Submitted | National Grid PLC | RNS |
| 21/04/17 | | 17:25:06 | 21 Apr 2017 | | | Board Committee Changes | National Grid PLC | RNS |
| 20/04/17 | | 19:09:00 | 20 Apr 2017 | | | Board Change | National Grid PLC | RNS |
| 19/04/17 | | 19:03:27 | 19 Apr 2017 | | | Special Dividend and Notice of General Meeting | National Grid PLC | RNS |
| 18/04/17 | | 11:24:21 | 18 Apr 2017 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 12/04/17 | | 08:10:47 | 12 Apr 2017 | | | Update on timing impacts for fiscal year 2016/17 | National Grid PLC | RNS |
| 10/04/17 | | 11:44:53 | 10 Apr 2017 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 03/04/17 | | 11:16:22 | 3 Apr 2017 | | | Total Voting Rights | National Grid PLC | RNS |
| 31/03/17 | | 12:30:02 | 31 Mar 2017 | | | National Grid completes Gas Distribution sale | National Grid PLC | RNS |
| 28/03/17 | | 08:00:12 | 28 Mar 2017 | | | Update on UK Electricity Transmission Allowances | National Grid PLC | RNS |
| 16/03/17 | | 16:48:19 | 16 Mar 2017 | | | NGGD Sale - European Commission Merger Clearance | National Grid PLC | RNS |
| 08/03/17 | | 09:43:04 | 8 Mar 2017 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 03/03/17 | | 15:20:33 | 3 Mar 2017 | | | Block listing Interim Review | National Grid PLC | RNS |
| 01/03/17 | | 11:28:14 | 1 Mar 2017 | | | Total Voting Rights | National Grid PLC | RNS |
| 24/02/17 | | 09:35:39 | 24 Feb 2017 | | | Holding(s) in Company | National Grid PLC | RNS |
| 16/02/17 | | 07:00:08 | 16 Feb 2017 | | | Board Appointment | National Grid PLC | RNS |
