| BROWN, Andrew James ACTIVE | Director | 31 Oct 2023 | | England | February 1964 | Howbery Park, Wallingford, Oxon, OX10 8BA, United Kingdom |
| CHADWICK, Thomas RESIGNED | Secretary | 07 May 1992 | 31 Dec 1995 | | | The Mount Cat Lane, Ewelme, Wallingford, Oxfordshire, OX10 6HX |
| NORRIS, Nicole Ann Jane RESIGNED | Secretary | 01 Jan 2008 | 28 Jan 2022 | | | Howbery Park, Wallingford, Oxon, OX10 8BA |
| ORMSTON, John Robert RESIGNED | Secretary | 01 Jan 1996 | 31 Dec 2007 | | | Norwood House, 49a St Cross Road, Winchester, Hampshire, SO23 9PS |
| PADDON, Rachel RESIGNED | Secretary | 28 Jan 2022 | 25 May 2022 | | | Howbery Park, Wallingford, Oxon, OX10 8BA |
| CHADWICK, Thomas RESIGNED | Director | 07 May 1992 | 31 Dec 1995 | | October 1936 | The Mount Cat Lane, Ewelme, Wallingford, Oxfordshire, OX10 6HX |
| HERBERT, Nigel Paul Stewart RESIGNED | Director | 16 Mar 2017 | 27 Jul 2017 | England | March 1959 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| HUNTINGTON, Stephen William, Dr RESIGNED | Director | 01 Apr 1999 | 31 Oct 2016 | England | February 1947 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| LEEMING, Graham David RESIGNED | Director | 27 Jul 2017 | 18 Nov 2022 | England | September 1968 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| ORMSTON, John Robert RESIGNED | Director | 01 Jan 1996 | 24 Jul 2014 | United Kingdom | May 1953 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| PATTERSON, Lauren Katherine Stewart RESIGNED | Director | 24 Jul 2014 | 16 Mar 2017 | England | April 1976 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| TOMLINSON, Bruce Nicholas, Dr RESIGNED | Director | 18 Nov 2022 | 31 Oct 2023 | England | August 1965 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| WEARE, Trevor John, Dr RESIGNED | Director | 07 May 1992 | 31 Mar 1999 | | December 1943 | Rose Cottage, Dunsomer Hill North Moreton, Wallingford, Oxfordshire, OX9 |