| BENTIBA, Ridha ACTIVE | Director | 02 Oct 2020 | | England | May 1977 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| BROWN, Andrew James ACTIVE | Director | 02 Dec 2013 | | England | February 1964 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| WARWICK, Edward John Roger ACTIVE | Director | 27 Aug 2024 | | United Kingdom | January 1976 | Howbery Park, Wallingford, Oxon, OX10 8BA, United Kingdom |
| CHADWICK, Thomas RESIGNED | Secretary | | 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 Blackburn, Mrs. RESIGNED | Secretary | 28 Jan 2022 | 25 May 2022 | | | Howbery Park, Wallingford, Oxon, OX10 8BA |
| CHADWICK, Thomas RESIGNED | Director | | 31 Dec 1995 | | October 1936 | The Mount Cat Lane, Ewelme, Wallingford, Oxfordshire, OX10 6HX |
| CRUICKSHANK, Ian Charles RESIGNED | Director | 12 Feb 2008 | 15 Feb 2016 | England | September 1967 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| CUOMO, Giovanni RESIGNED | Director | 30 Jun 2014 | 01 Feb 2016 | United Kingdom | November 1976 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| DEARNALEY, Michael Paul, Dr RESIGNED | Director | 01 Oct 2007 | 01 Nov 2017 | England | October 1964 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| FENN, Colin Richard, Dr RESIGNED | Director | 01 Apr 2003 | 30 Sep 2005 | England | August 1954 | 9 Reading Road, Goring On Thames, Reading, Berkshire, RG8 0ET |
| FREEMAN, Dougal Adam RESIGNED | Director | 17 Jan 2023 | 06 Sep 2023 | England | January 1970 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| GEORGE, Christopher Brian RESIGNED | Director | 01 Jan 1996 | 16 Feb 1998 | | June 1952 | Suggetts Fullers Road, Aston Tirrold, Didcot, Oxfordshire, OX11 9EN |
| HERBERT, Nigel Paul Stewart RESIGNED | Director | 16 Mar 2017 | 20 Jul 2017 | England | March 1959 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| HUNTINGTON, Stephen William, Dr RESIGNED | Director | 12 Feb 2008 | 31 Oct 2016 | England | February 1947 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| HUNTINGTON, Stephen William, Dr RESIGNED | Director | 01 Jan 1996 | 31 Mar 2007 | England | February 1947 | Littleholt, Beech Lane, Woodcote, Reading, Berkshire, RG8 0PX |
| LEEMING, Graham David RESIGNED | Director | 27 Jul 2017 | 18 Nov 2022 | England | September 1968 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| MOCKETT, Ian Donald RESIGNED | Director | 01 Jan 2014 | 04 Mar 2015 | England | August 1973 | 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 |
| POWELL, Keith Andrew, Dr RESIGNED | Director | 01 Jan 1996 | 31 Dec 2020 | England | January 1958 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| RAMSBOTTOM, David Malcolm RESIGNED | Director | 01 Apr 1999 | 31 Mar 2001 | | February 1953 | 7 Stile Road, Headington, Oxford, Oxfordshire, OX3 8AG |
| SAYERS, Paul Benjamin RESIGNED | Director | 01 Oct 2008 | 30 Jun 2010 | England | November 1968 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| SKIPPER, Colin William, Dr RESIGNED | Director | 01 Apr 2003 | 01 Nov 2013 | England | February 1961 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| SMALLMAN, Jane Victoria, Doctor RESIGNED | Director | 01 Jan 1996 | 22 Jan 2015 | England | December 1957 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| TOMLINSON, Bruce Nicholas, Dr RESIGNED | Director | 24 Jul 2014 | 31 Oct 2023 | England | August 1965 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| TOWNEND, Ian Howard RESIGNED | Director | 05 Jun 2006 | 30 Jun 2014 | England | February 1954 | Howbery Park, Wallingford, Oxon, OX10 8BA |
| WEARE, Trevor John, Dr RESIGNED | Director | | 31 Mar 1999 | | December 1943 | Rose Cottage, Dunsomer Hill North Moreton, Wallingford, Oxfordshire, OX9 |