| BROWN, Colin Andrew ACTIVE | Secretary | 19 Sep 2023 | | | | 4, Hester Terrace, Richmond, Surrey, TW9 4JT, England |
| BROWN, Colin Andrew ACTIVE | Director | 25 Mar 2022 | | England | March 1964 | 4, Hester Terrace, Richmond, Surrey, TW9 4JT, England |
| BOYDELL, John Nicholas RESIGNED | Secretary | 20 Aug 2008 | 12 Jun 2015 | | | Wivelrod Farm, House, Wivelrod Road Wivelrod, Alton, Hampshire, GU34 4AS, United Kingdom |
| COLLINS, Jeremy Keith RESIGNED | Secretary | 03 Aug 1994 | 20 Aug 2008 | | | 3 Hester Terrace, Kew, Richmond, Surrey, TW9 4JT |
| FUNMILAYO PATHMANATHAN, Marie-Therese RESIGNED | Secretary | 25 Mar 2022 | 19 Sep 2023 | | | 3, Hester Terrace, Richmond, Surrey, TW9 4JT, England |
| BOYDELL, John Nicholas RESIGNED | Director | 01 Nov 1996 | 18 Sep 2017 | England | August 1945 | Wivelrod Farmhouse, Wivelrod Road, Wivelrod, Alton, Hampshire, GU34 4AQ, England |
| COLLINS, Jeremy Keith RESIGNED | Director | 01 Aug 2000 | 20 Aug 2008 | | November 1958 | 3 Hester Terrace, Kew, Richmond, Surrey, TW9 4JT |
| DEXTER, Anthony Michael RESIGNED | Director | 21 Jul 2008 | 17 Oct 2013 | England | October 1976 | 5 Hester Terrace, Richmond, Surrey, TW9 4JT |
| FAIRBROTHER, Carol Jane RESIGNED | Director | 01 Nov 1996 | 31 Jul 2000 | | September 1947 | 5 Hester Terrace, Kew, Richmond, Surrey, TW9 4JT |
| HUNTER, Kevin Francis RESIGNED | Director | 03 Aug 1994 | 04 Aug 1996 | United Kingdom | April 1948 | Magill, Shophouse Lane, Albury, Surrey, GU5 9EQ |
| JAYASENA, Channa, Dr RESIGNED | Director | 17 Oct 2013 | 01 Dec 2014 | United Kingdom | April 1976 | 1, Hester Terrace, Chilton Road, Kew, Surrey, TW9 4JT, England |
| JAYASENA, Channa, Dr RESIGNED | Director | 16 Sep 2013 | 16 Oct 2013 | United Kingdom | April 1976 | 1, Hester Terrace, Chilton Road, Kew, Surrey, TW9 4JT, England |
| OBERTELLI, Sandro David RESIGNED | Director | 01 Nov 1996 | 31 Aug 1998 | | November 1961 | 1 Hester Terrace, Kew, Richmond, Surrey, TW9 4JT |
| PATHMANATHAN, Marie-Therese Funmilayo RESIGNED | Director | 26 Aug 2022 | 19 Sep 2023 | England | August 1982 | 3, Hester Terrace, Richmond, TW9 4JT, England |
| PEREDA, Jose RESIGNED | Director | 19 Sep 2023 | 08 Jul 2026 | England | June 1982 | 4, Hester Terrace, Richmond, Surrey, TW9 4JT, England |
| SINKER, Nicola Jane RESIGNED | Director | 01 Dec 2014 | 23 Jul 2021 | England | May 1983 | 5, Hester Terrace, Chilton Road, Kew, Surrey, TW9 4JT, England |
| WALKLEY, Fiona RESIGNED | Director | 25 Sep 2017 | 25 Mar 2022 | United Kingdom | March 1980 | 1, Hester Terrace, Richmond, TW9 4JT, England |
| WHEELHOUSE, Heather Jane RESIGNED | Director | 03 Aug 1994 | 31 Aug 1998 | | August 1964 | 6 Hester Terrace, Kew, Richmond, Surrey, TW9 4JT |