| BROWN, Andrew James ACTIVE | Director | 31 Oct 2023 | | England | February 1964 | Howbery Park, Howbery Park, Wallingford, Oxfordshire, OX10 8BA, United Kingdom |
| DEARNALEY, Michael Paul, Dr ACTIVE | Director | 24 Nov 2007 | | England | October 1964 | Howbery Park, Wallingford, Oxfordshire, OX10 8BA |
| BRAY, Richard Nicholas RESIGNED | Secretary | | 24 Nov 2007 | | | High Pines Hoe Lane, Peaslake, Guildford, Surrey, GU5 9SW |
| NORRIS, Nicole Ann Jane RESIGNED | Secretary | 07 Dec 2009 | 28 Jan 2022 | | | Howbery Park, Wallingford, Oxfordshire, OX10 8BA |
| ORMSTON, John Robert RESIGNED | Secretary | 24 Nov 2007 | 07 Dec 2009 | | | Norwood House, 49a St Cross Road, Winchester, Hampshire, SO23 9PS |
| PADDON, Rachel RESIGNED | Secretary | 28 Jan 2022 | 25 May 2022 | | | Howbery Park, Wallingford, Oxfordshire, OX10 8BA |
| BRAY, Richard Nicholas RESIGNED | Director | 14 Aug 1989 | 07 Mar 2018 | England | January 1942 | Howbery Park, Wallingford, Oxfordshire, OX10 8BA |
| BRAY, Richard Nicholas RESIGNED | Director | | 24 Nov 2007 | England | January 1942 | High Pines Hoe Lane, Peaslake, Guildford, Surrey, GU5 9SW |
| HERBERT, Nigel Paul Stewart RESIGNED | Director | 16 Mar 2017 | 27 Jul 2017 | England | March 1959 | Howbery Park, Wallingford, Oxfordshire, OX10 8BA |
| LAND, John Michael RESIGNED | Director | | 13 Apr 2007 | | May 1951 | Hindhead Grove Hill Road, Beacon Hill, Hindhead, Surrey, GU26 6QN |
| LEEMING, Graham David RESIGNED | Director | 27 Jul 2017 | 18 Nov 2022 | England | September 1968 | Howbery Park, Wallingford, Oxfordshire, OX10 8BA |
| ORMSTON, John Robert RESIGNED | Director | 24 Nov 2007 | 24 Jul 2014 | United Kingdom | May 1953 | Howbery Park, Wallingford, Oxfordshire, OX10 8BA |
| PATTERSON, Lauren Katherine Stewart RESIGNED | Director | 24 Jul 2014 | 16 Mar 2017 | England | April 1976 | Howbery Park, Wallingford, Oxfordshire, OX10 8BA |
| SANDERS, Michael Kenneth RESIGNED | Director | | 02 Apr 1993 | | December 1943 | Shoreys, Pitch Hill, Ewhurst, Surrey, GU6 7NP |
| TOMLINSON, Bruce Nicholas, Dr RESIGNED | Director | 18 Nov 2022 | 31 Oct 2023 | England | August 1965 | Howbery Park, Wallingford, Oxfordshire, OX10 8BA |