| 23/02/16 | | 17:28:17 | 23 Feb 2016 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 23/02/16 | | 07:00:06 | 23 Feb 2016 | | | Commencement of a Share Buyback Programme | National Grid PLC | RNS |
| 09/02/16 | | 16:00:02 | 9 Feb 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 01/02/16 | | 11:00:02 | 1 Feb 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 29/01/16 | | 16:30:02 | 29 Jan 2016 | | | Rate Filings Submitted for KEDNY and KEDLI | National Grid PLC | RNS |
| 13/01/16 | | 16:00:02 | 13 Jan 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 13/01/16 | | 16:00:02 | 13 Jan 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 12/01/16 | | 09:00:02 | 12 Jan 2016 | | | Scrip Dividend | National Grid PLC | RNS |
| 08/01/16 | | 16:00:02 | 8 Jan 2016 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 04/01/16 | | 11:00:03 | 4 Jan 2016 | | | Total Voting Rights | National Grid PLC | RNS |
| 23/12/15 | | 16:00:02 | 23 Dec 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 07/12/15 | | 16:00:03 | 7 Dec 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 04/12/15 | | 11:30:04 | 4 Dec 2015 | | | Holding(s) in Company | National Grid PLC | RNS |
| 03/12/15 | | 13:00:01 | 3 Dec 2015 | | | Scrip Dividend for 2015/16 Interim Dividend | National Grid PLC | RNS |
| 02/12/15 | | 16:00:02 | 2 Dec 2015 | | | Holding(s) in Company | National Grid PLC | RNS |
| 01/12/15 | | 11:30:02 | 1 Dec 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 26/11/15 | | 07:00:08 | 26 Nov 2015 | | | Adjustment to conversion price of bonds due 2020 | National Grid PLC | RNS |
| 18/11/15 | | 16:35:43 | 18 Nov 2015 | | | NGET Half Year Report 30 Sept 2015 | National Grid PLC | RNS |
| 18/11/15 | | 16:29:18 | 18 Nov 2015 | | | NGG plc - Half Year Report - 30 Sept 2015 | National Grid PLC | RNS |
| 12/11/15 | | 11:30:03 | 12 Nov 2015 | | | National Grid holds US Update event in London | National Grid PLC | RNS |
| 11/11/15 | | 07:00:10 | 11 Nov 2015 | | | Appointment of Auditor | National Grid PLC | RNS |
| 10/11/15 | | 16:00:02 | 10 Nov 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 10/11/15 | | 07:00:06 | 10 Nov 2015 | | | National Grid plc Half year report 30 Sept 2015 | National Grid PLC | RNS |
| 09/11/15 | | 07:00:08 | 9 Nov 2015 | | | Massachusetts electric rate filing submitted | National Grid PLC | RNS |
| 03/11/15 | | 07:00:09 | 3 Nov 2015 | | | Directorate Change | National Grid PLC | RNS |
| 02/11/15 | | 12:00:03 | 2 Nov 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 15/10/15 | | 17:00:06 | 15 Oct 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 09/10/15 | | 08:00:08 | 9 Oct 2015 | | | Determination of initial conversion price of Bonds | National Grid PLC | RNS |
| 08/10/15 | | 17:00:12 | 8 Oct 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 07/10/15 | | 11:45:04 | 7 Oct 2015 | | | Annual Report - Group Companies With Listed Debt | National Grid PLC | RNS |
| 01/10/15 | | 13:30:06 | 1 Oct 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 24/09/15 | | 16:28:22 | 24 Sept 2015 | | | Non-dilutive convertible bonds due 2020 | National Grid PLC | RNS |
| 24/09/15 | | 08:06:40 | 24 Sept 2015 | | | Issue of non-dilutive convertible bonds due 2020 | National Grid PLC | RNS |
| 22/09/15 | | 18:29:34 | 22 Sept 2015 | | | Annual Report - Group Companies With Debt | National Grid PLC | RNS |
| 10/09/15 | | 17:23:20 | 10 Sept 2015 | | | September newsletter released | National Grid PLC | RNS |
| 08/09/15 | | 17:00:03 | 8 Sept 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 02/09/15 | | 17:00:05 | 2 Sept 2015 | | | Director/PDMR Shareholding | National Grid PLC | RNS |
| 01/09/15 | | 17:00:04 | 1 Sept 2015 | | | Blocklisting Interim Review | National Grid PLC | RNS |
| 01/09/15 | | 15:00:17 | 1 Sept 2015 | | | Total Voting Rights | National Grid PLC | RNS |
| 27/08/15 | | 17:00:03 | 27 Aug 2015 | | | Annual Report - Group companies with listed debt | National Grid PLC | RNS |
| 25/08/15 | | 18:38:37 | 25 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 24/08/15 | | 18:35:54 | 24 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 21/08/15 | | 18:32:11 | 21 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 20/08/15 | | 18:28:45 | 20 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 19/08/15 | | 18:31:03 | 19 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 18/08/15 | | 18:39:10 | 18 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 17/08/15 | | 18:26:06 | 17 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 12/08/15 | | 18:56:14 | 12 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 11/08/15 | | 19:05:45 | 11 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
| 07/08/15 | | 18:11:20 | 7 Aug 2015 | | | Transaction in Own Shares | National Grid PLC | RNS |
