| CHAMBERS, Natalie ACTIVE | Secretary | 31 Jul 2025 | | | | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| BERRY, Marcia ACTIVE | Director | 01 Jan 2023 | | England | May 1969 | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| BISHOP, Paul James ACTIVE | Director | 17 Apr 2026 | | England | December 1983 | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| CHAMBERS, Natalie ACTIVE | Director | 23 Jul 2025 | | England | May 1976 | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| CHAMBERS, Natalie RESIGNED | Secretary | 03 Mar 2017 | 15 Jun 2023 | | | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| CURTIS, Wendy June RESIGNED | Secretary | 27 Feb 1996 | 01 Jun 2000 | | | Briarside Cog Road, Sully, Vale Of Glamorgan, CF64 5TD |
| DEMBOVSKY, Mark Jeremy RESIGNED | Secretary | 31 Dec 1993 | 27 Feb 1996 | | | 21 Hartfield Avenue, Elstree, Hertfordshire, WD6 3JB |
| FRAYLICH, Philip RESIGNED | Secretary | 29 Nov 2001 | 21 May 2007 | | | 81 Hillside Gardens, Edgware, Middlesex, HA8 8HB |
| GOLDSOBEL, Howard RESIGNED | Secretary | 10 Feb 2012 | 03 Mar 2017 | | | 24 Queen Anne Street, London, W1G 9AX |
| GOODKIND, Peter John RESIGNED | Secretary | 01 Jun 2000 | 29 Nov 2001 | | | 5, Inverforth Close, Hampstead, London, NW3 7EA |
| JESSOP, Peter Philip RESIGNED | Secretary | | 31 Dec 1993 | | | 18 Mortimer Hill, Tring, Hertfordshire, HP23 5JU |
| LEVENE, Geoffrey RESIGNED | Secretary | 21 May 2007 | 10 Feb 2012 | | | 24 Queen Anne Street, London, W1G 9AX |
| MURRAY-BRUCE, Wayne RESIGNED | Secretary | 15 Jun 2023 | 31 Jul 2025 | | | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| ANNING, Richard John RESIGNED | Director | 27 Feb 1996 | 01 Jun 2000 | | January 1953 | 11 Orchard Close, Wenvoe, Cardiff, Vale Of Glamorgan, CF5 6BW |
| CANVIN, Jeremy Mark RESIGNED | Director | 04 Oct 2012 | 07 Oct 2019 | United Kingdom | June 1965 | 24, Queen Anne Street, London, W1G 9AX, United Kingdom |
| CURTIS, Wendy June RESIGNED | Director | | 01 Jun 2000 | | June 1949 | Briarside Cog Road, Sully, Vale Of Glamorgan, CF64 5TD |
| GOODKIND, Peter John RESIGNED | Director | 01 Jun 2000 | 03 Mar 2017 | United Kingdom | February 1951 | 24 Queen Anne Street, London, W1G 9AX |
| GRADWELL, Peter RESIGNED | Director | | 27 Feb 1996 | | October 1955 | 13 Moss Lane, Lydiate, Merseyside, L31 4DB |
| GROSS, Michael Martin Hugo RESIGNED | Director | | 27 Feb 1996 | | October 1946 | 155 Regents Park Road, London, NW1 8BB |
| LANGFORD, Paul RESIGNED | Director | 01 May 2018 | 30 Apr 2026 | England | July 1971 | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| MILLAR, Simon Richard RESIGNED | Director | 26 Sep 2022 | 21 Feb 2025 | England | June 1966 | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| MURRAY-BRUCE, Wayne Louis RESIGNED | Director | 15 Jun 2023 | 31 Jul 2025 | United Kingdom | March 1972 | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| PADULLI, Luca RESIGNED | Director | 03 Mar 2017 | 03 May 2017 | Switzerland | May 1955 | 24 Queen Anne Street, London, W1G 9AX |
| PLATT, Michael Anthony RESIGNED | Director | 05 May 2011 | 24 Aug 2023 | England | June 1966 | Botanic House, Hills Road, Cambridge, CB2 1PH, England |
| SIMPSON, Paul RESIGNED | Director | 01 Jun 2002 | 31 Jan 2013 | Wales | November 1958 | 56 Hampton Court Road, Penylan, Cardiff, South Glamorgan, CF23 9DH |
| SUTHERLAND, Donald Alexander RESIGNED | Director | 07 Mar 1997 | 28 Apr 2011 | Great Britain | March 1954 | 317 Western Avenue, Cardiff, South Glamorgan, CF5 2BA |