| 07/05/15 | | 17:30:03 | 7 May 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 07/05/15 | | 17:00:06 | 7 May 2015 | | | National Grid News Update | National Grid PLC | RNS |
| 05/05/15 | | 17:15:39 | 5 May 2015 | | | Change in Director Responsibilities | National Grid PLC | RNS |
| 01/05/15 | | 11:46:17 | 1 May 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 23/04/15 | | 17:00:02 | 23 Apr 2015 | | | Change in Director Responsibilities | National Grid PLC | RNS |
| 20/04/15 | | 17:00:07 | 20 Apr 2015 | | | Holding(s) in Company | National Grid PLC | RNS |
| 08/04/15 | | 17:00:02 | 8 Apr 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 01/04/15 | | 17:00:02 | 1 Apr 2015 | | | Director Responsibilities | National Grid PLC | RNS |
| 01/04/15 | | 17:00:02 | 1 Apr 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 01/04/15 | | 16:00:02 | 1 Apr 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 26/03/15 | | 10:32:16 | 26 Mar 2015 | | | Agreement with Statnett on new Interconnector | National Grid PLC | RNS |
| 09/03/15 | | 16:00:02 | 9 Mar 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 02/03/15 | | 16:00:03 | 2 Mar 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 02/03/15 | | 16:00:03 | 2 Mar 2015 | | | Blocklisting Interim Review | National Grid PLC | RNS |
| 02/03/15 | | 09:18:48 | 2 Mar 2015 | | | National Grid News Update | National Grid PLC | RNS |
| 26/02/15 | | 09:02:09 | 26 Feb 2015 | | | Change in Director Responsibilities | National Grid PLC | RNS |
| 25/02/15 | | 17:43:42 | 25 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 24/02/15 | | 17:25:17 | 24 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 23/02/15 | | 17:37:33 | 23 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 23/02/15 | | 09:02:00 | 23 Feb 2015 | | | Holding(s) in Company | National Grid PLC | RNS |
| 20/02/15 | | 17:15:47 | 20 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 19/02/15 | | 17:06:32 | 19 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 18/02/15 | | 17:34:23 | 18 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 18/02/15 | | 10:00:05 | 18 Feb 2015 | | | Commencement of share buy-back programme | National Grid PLC | RNS |
| 16/02/15 | | 17:36:30 | 16 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 13/02/15 | | 17:17:24 | 13 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 11/02/15 | | 10:02:44 | 11 Feb 2015 | | | Directorate Change | National Grid PLC | RNS |
| 10/02/15 | | 17:03:50 | 10 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 10/02/15 | | 16:33:11 | 10 Feb 2015 | | | Publication of Prospectus | National Grid PLC | RNS |
| 09/02/15 | | 17:18:19 | 9 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 09/02/15 | | 16:00:06 | 9 Feb 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 06/02/15 | | 17:10:12 | 6 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 05/02/15 | | 17:24:16 | 5 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 04/02/15 | | 17:06:07 | 4 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 02/02/15 | | 17:08:05 | 2 Feb 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 02/02/15 | | 15:32:53 | 2 Feb 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 29/01/15 | | 07:00:20 | 29 Jan 2015 | | | Commencement of share buy-back programme | National Grid PLC | RNS |
| 27/01/15 | | 08:00:02 | 27 Jan 2015 | | | National Grid stops Q1 & Q3 IMS | National Grid PLC | RNS |
| 15/01/15 | | 12:00:07 | 15 Jan 2015 | | | Holding(s) in Company | National Grid PLC | RNS |
| 14/01/15 | | 17:20:25 | 14 Jan 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 08/01/15 | | 16:00:03 | 8 Jan 2015 | | | Dividend Reinvestment | National Grid PLC | RNS |
| 08/01/15 | | 16:00:03 | 8 Jan 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 07/01/15 | | 16:00:09 | 7 Jan 2015 | | | Dividend Reinvestment | National Grid PLC | RNS |
| 07/01/15 | | 16:00:09 | 7 Jan 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 06/01/15 | | 09:00:03 | 6 Jan 2015 | | | National Grid PLC - Scrip Dividend | National Grid PLC | RNS |
| 02/01/15 | | 13:00:56 | 2 Jan 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 22/12/14 | | 17:22:49 | 22 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 18/12/14 | | 17:12:50 | 18 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 18/12/14 | | 16:00:03 | 18 Dec 2014 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 17/12/14 | | 17:48:50 | 17 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
