| 15/12/14 | | 17:34:36 | 15 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 12/12/14 | | 17:24:45 | 12 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 11/12/14 | | 17:31:59 | 11 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 10/12/14 | | 17:43:05 | 10 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 09/12/14 | | 17:17:39 | 9 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 08/12/14 | | 17:26:42 | 8 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 08/12/14 | | 16:00:05 | 8 Dec 2014 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 05/12/14 | | 10:00:03 | 5 Dec 2014 | | | Holding(s) in Company | National Grid PLC | RNS |
| 04/12/14 | | 17:48:13 | 4 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 02/12/14 | | 17:44:40 | 2 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 01/12/14 | | 17:11:52 | 1 Dec 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 01/12/14 | | 16:00:04 | 1 Dec 2014 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 01/12/14 | | 16:00:03 | 1 Dec 2014 | | | Total Voting Rights | National Grid PLC | RNS |
| 01/12/14 | | 09:57:26 | 1 Dec 2014 | | | Holding(s) in Company | National Grid PLC | RNS |
| 28/11/14 | | 17:17:51 | 28 Nov 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 27/11/14 | | 17:31:24 | 27 Nov 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 27/11/14 | | 13:00:03 | 27 Nov 2014 | | | Scrip Dividend for 2014/15 Interim Dividend | National Grid PLC | RNS |
| 26/11/14 | | 17:43:25 | 26 Nov 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 25/11/14 | | 17:30:50 | 25 Nov 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 25/11/14 | | 14:02:38 | 25 Nov 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 19/11/14 | | 16:00:02 | 19 Nov 2014 | | | Annual Report - Group companies with listed debt | National Grid PLC | RNS |
| 10/11/14 | | 16:00:02 | 10 Nov 2014 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 07/11/14 | | 07:00:11 | 7 Nov 2014 | | | Half year results for period ended 31 Sept 2014 | National Grid PLC | RNS |
| 03/11/14 | | 16:00:01 | 3 Nov 2014 | | | Total Voting Rights | National Grid PLC | RNS |
| 27/10/14 | | 16:00:03 | 27 Oct 2014 | | | Annual Report - Group companies with listed debt | National Grid PLC | RNS |
| 23/10/14 | | 17:00:03 | 23 Oct 2014 | | | Holding(s) in Company | National Grid PLC | RNS |
| 23/10/14 | | 14:45:03 | 23 Oct 2014 | | | Change in US leadership | National Grid PLC | RNS |
| 16/10/14 | | 18:13:05 | 16 Oct 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 07/10/14 | | 17:00:02 | 7 Oct 2014 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 02/10/14 | | 18:10:17 | 2 Oct 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 01/10/14 | | 17:00:04 | 1 Oct 2014 | | | Total Voting Rights | National Grid PLC | RNS |
| 30/09/14 | | 18:11:48 | 30 Sept 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 30/09/14 | | 08:00:06 | 30 Sept 2014 | | | Site visit & publication of RIIO stakeholder docs | National Grid PLC | RNS |
| 26/09/14 | | 17:00:02 | 26 Sept 2014 | | | Annual Report - Group companies with listed debt | National Grid PLC | RNS |
| 23/09/14 | | 18:11:59 | 23 Sept 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 18/09/14 | | 18:08:30 | 18 Sept 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 12/09/14 | | 16:38:55 | 12 Sept 2014 | | | Publication of Prospectus | National Grid PLC | RNS |
| 09/09/14 | | 17:00:02 | 9 Sept 2014 | | | Holding(s) in Company | National Grid PLC | RNS |
| 08/09/14 | | 17:00:02 | 8 Sept 2014 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 03/09/14 | | 17:00:02 | 3 Sept 2014 | | | Blocklisting Interim Review | National Grid PLC | RNS |
| 01/09/14 | | 17:00:04 | 1 Sept 2014 | | | Total Voting Rights | National Grid PLC | RNS |
| 29/08/14 | | 18:09:39 | 29 Aug 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 22/08/14 | | 10:44:57 | 22 Aug 2014 | | | Dividend reinvestment | National Grid PLC | RNS |
| 21/08/14 | | 18:43:24 | 21 Aug 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 20/08/14 | | 17:00:05 | 20 Aug 2014 | | | Dividend Reinvestment | National Grid PLC | RNS |
| 20/08/14 | | 17:00:05 | 20 Aug 2014 | | | Total Voting Rights | National Grid PLC | RNS |
| 19/08/14 | | 10:00:01 | 19 Aug 2014 | | | Scrip Dividend | National Grid PLC | RNS |
| 14/08/14 | | 18:09:36 | 14 Aug 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 08/08/14 | | 08:00:06 | 8 Aug 2014 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 07/08/14 | | 17:00:01 | 7 Aug 2014 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
