| 12/08/16 | | 14:43:27 | 12 Aug 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 10/08/16 | | 17:00:02 | 10 Aug 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 10/08/16 | | 13:12:39 | 10 Aug 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 09/08/16 | | 10:12:18 | 9 Aug 2016 | | | Scrip Dividend | National Grid PLC | RNS |
| 01/08/16 | | 11:59:23 | 1 Aug 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 25/07/16 | | 15:26:23 | 25 Jul 2016 | | | Result of AGM | National Grid PLC | RNS |
| 21/07/16 | | 15:25:37 | 21 Jul 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 21/07/16 | | 13:14:10 | 21 Jul 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 20/07/16 | | 17:00:04 | 20 Jul 2016 | | | Holding(s) in Company | National Grid PLC | RNS |
| 14/07/16 | | 13:07:52 | 14 Jul 2016 | | | Second Price Monitoring Extn | National Grid PLC | RNS |
| 14/07/16 | | 13:02:15 | 14 Jul 2016 | | | Price Monitoring Extension | National Grid PLC | RNS |
| 14/07/16 | | 10:54:39 | 14 Jul 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 14/07/16 | | 10:46:06 | 14 Jul 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 12/07/16 | | 16:01:49 | 12 Jul 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 07/07/16 | | 17:51:46 | 7 Jul 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 01/07/16 | | 10:55:02 | 1 Jul 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 01/07/16 | | 10:05:02 | 1 Jul 2016 | | | Director's Other Appointment | National Grid PLC | RNS |
| 29/06/16 | | 17:00:02 | 29 Jun 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 17/06/16 | | 17:00:02 | 17 Jun 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 16/06/16 | | 17:00:02 | 16 Jun 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 09/06/16 | | 14:00:02 | 9 Jun 2016 | | | Scrip Dividend for 2015/16 Final Dividend | National Grid PLC | RNS |
| 08/06/16 | | 17:18:33 | 8 Jun 2016 | | | Holding(s) in Company | National Grid PLC | RNS |
| 07/06/16 | | 16:38:18 | 7 Jun 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 07/06/16 | | 14:49:01 | 7 Jun 2016 | | | Publication of Annual Report and Accounts | National Grid PLC | RNS |
| 02/06/16 | | 08:00:08 | 2 Jun 2016 | | | Notice of Adjustment to the Conversion Price | National Grid PLC | RNS |
| 01/06/16 | | 12:03:28 | 1 Jun 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 31/05/16 | | 17:07:33 | 31 May 2016 | | | Holding(s) in Company | National Grid PLC | RNS |
| 23/05/16 | | 18:43:08 | 23 May 2016 | | | Investment Order received for Niagara Mohawk | National Grid PLC | RNS |
| 19/05/16 | | 08:00:17 | 19 May 2016 | | | Results for the year ended 31 MARCH 2016 | National Grid PLC | RNS |
| 12/05/16 | | 11:30:02 | 12 May 2016 | | | UK RIIO-T1 Mid-Period Review | National Grid PLC | RNS |
| 10/05/16 | | 17:15:02 | 10 May 2016 | | | Board Change | National Grid PLC | RNS |
| 10/05/16 | | 17:00:02 | 10 May 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 03/05/16 | | 13:00:02 | 3 May 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 07/04/16 | | 18:44:58 | 7 Apr 2016 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 06/04/16 | | 08:15:01 | 6 Apr 2016 | | | Director's Other Appointment | National Grid PLC | RNS |
| 05/04/16 | | 16:17:50 | 5 Apr 2016 | | | Directorate Change | National Grid PLC | RNS |
| 01/04/16 | | 17:00:04 | 1 Apr 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 01/04/16 | | 15:29:54 | 1 Apr 2016 | | | Director Responsibilities | National Grid PLC | RNS |
| 01/04/16 | | 13:47:07 | 1 Apr 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 01/04/16 | | 08:00:06 | 1 Apr 2016 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 23/03/16 | | 07:00:10 | 23 Mar 2016 | | | National Grid appoints new UK Executive Director | National Grid PLC | RNS |
| 08/03/16 | | 16:00:07 | 8 Mar 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 08/03/16 | | 08:20:17 | 8 Mar 2016 | | | Blocklisting Interim Review | National Grid PLC | RNS |
| 03/03/16 | | 17:23:23 | 3 Mar 2016 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 02/03/16 | | 17:18:38 | 2 Mar 2016 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 01/03/16 | | 11:00:02 | 1 Mar 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 29/02/16 | | 17:11:33 | 29 Feb 2016 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 26/02/16 | | 17:14:13 | 26 Feb 2016 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 25/02/16 | | 17:23:26 | 25 Feb 2016 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 24/02/16 | | 17:14:31 | 24 Feb 2016 | | | Transaction in Own Shares | National Grid PLC | RNS |
