| MEE, Victoria Helen Frances ACTIVE | Secretary | 02 May 2025 | | | | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| CLANFORD, Piers Martin ACTIVE | Director | 01 May 2026 | | United Kingdom | January 1970 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| EADY, Neil Leslie ACTIVE | Director | 13 Jan 2026 | | United Kingdom | November 1977 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| ELLIOTT, Robert William ACTIVE | Director | 01 May 2026 | | United Kingdom | February 1981 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| PERRINS, Robert Charles Grenville ACTIVE | Director | 30 May 2018 | | United Kingdom | April 1965 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| STEARN, Richard James ACTIVE | Director | 30 May 2018 | | United Kingdom | August 1968 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| SUMMERS, Dean John ACTIVE | Director | 02 May 2025 | | United Kingdom | October 1976 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| CRANNEY, Jared Stephen Philip RESIGNED | Secretary | 30 May 2018 | 21 Oct 2019 | | | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| ALDEN, Richard RESIGNED | Director | 30 May 2018 | 16 Apr 2021 | England | January 1974 | National Grid Plc, 1-3 Strand, London, WC2N 5EH |
| DOWSETT, Alison Jane RESIGNED | Director | 26 Jun 2020 | 02 May 2025 | United Kingdom | February 1966 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| DOYLE, Andrew James RESIGNED | Director | 18 Jul 2019 | 30 Nov 2021 | England | October 1967 | National Grid, 1 - 3 Strand, London, London, WC2N 5EH, United Kingdom |
| EADY, Neil Leslie RESIGNED | Director | 30 May 2018 | 22 Nov 2018 | United Kingdom | November 1977 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| EDWARDS, Philip Duncan RESIGNED | Director | 30 May 2018 | 15 Mar 2022 | England | June 1970 | National Grid Plc, 1-3 Strand, London, WC2N 5EH |
| GABBI, Prem Kumar RESIGNED | Director | 30 May 2018 | 15 Mar 2022 | United Kingdom | April 1969 | National Grid Plc, 1-3 Strand, London, WC2N 5EH |
| GRANT, Simon Warren RESIGNED | Director | 16 Apr 2021 | 15 Mar 2022 | United Kingdom | October 1979 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| KEMKERS, Peter Edward RESIGNED | Director | 22 Nov 2018 | 02 Mar 2026 | United Kingdom | September 1971 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| LOWRY, David Martin RESIGNED | Director | 23 Feb 2026 | 30 Apr 2026 | United Kingdom | December 1981 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| PIDGLEY, Anthony William RESIGNED | Director | 30 May 2018 | 26 Jun 2020 | United Kingdom | August 1947 | Berkeley House, 19 Portsmouth Road, Cobham, Surrey, KT11 1JG, United Kingdom |
| WESTCOTT, Michael John RESIGNED | Director | 30 May 2018 | 28 Jun 2019 | United Kingdom | September 1962 | National Grid Plc, 1-3 Strand, London, WC2N 5EH |