| EGAN, Giles Edward ACTIVE | Secretary | 14 May 2026 | | | | 6, Royal Parade, Station Approach, Kew Gardens, Surrey, TW9 3QD, England |
| ALLSOP, Matthew Elliott ACTIVE | Director | 17 Dec 2014 | | England | December 1970 | 6, Royal Parade, Station Approach, Kew Gardens, Surrey, TW9 3QD, England |
| BLAKEWAY WEBB, Charlotte Sarah ACTIVE | Director | 22 Apr 2003 | | United Kingdom | March 1949 | 13a Kew Gardens Road, Richmond, Surrey, TW9 3HG |
| BLAKEWAY - WEBB, Charlotte RESIGNED | Secretary | 08 Nov 2007 | 14 May 2026 | | | 13a Kew Gardens Road, Richmond, Surrey, TW9 3HG |
| SHAW, Karen RESIGNED | Secretary | 11 Jun 1998 | 25 Sep 2000 | | | Flat 6 12 Kew Gardens Road, Richmond, Surrey, TW9 3HG |
| THOMAS, Howard RESIGNED | Nominee Secretary | 11 Jun 1998 | 11 Jun 1998 | | | 50 Iron Mill Place, Crayford, Kent, DA1 4RT |
| WEDDELL, Christopher John RESIGNED | Secretary | 04 Oct 2000 | 08 Nov 2007 | | | Flat 14 12 Kew Gardens Road, Richmond, Surrey, TW9 3HG |
| ATKINSON, Angela Mary RESIGNED | Director | 04 Oct 2000 | 01 Apr 2005 | | June 1956 | Flat 3, 12 Kew Gardens Road, Kew Richmond, Surrey, TW9 3HG |
| CHARLESTON, David Anthony Leslie, Mr. RESIGNED | Director | 13 Jun 2006 | 15 Jul 2015 | England | February 1941 | 6a, Royal Parade, Station Approach, Richmond, Surrey, TW9 3QD, England |
| CHESWORTH, John Coventry RESIGNED | Director | 04 Oct 2000 | 30 Jul 2004 | | June 1930 | Church Cottage, Upper Somerton, Bury St Edmunds, Suffolk, IP29 4ND |
| DICKINSON, John Keith RESIGNED | Director | 11 Jun 1998 | 14 Nov 2022 | England | June 1966 | 6a, Royal Parade, Station Approach, Richmond, Surrey, TW9 3QD, England |
| DUNNE, John Eugene RESIGNED | Director | 29 May 2012 | 28 Apr 2025 | England | November 1958 | 6, Royal Parade, Station Approach, Kew Gardens, Surrey, TW9 3QD, England |
| EMERY, Alfred Charles RESIGNED | Director | 25 Nov 2013 | 09 Aug 2024 | England | April 1943 | 6, Royal Parade, Station Approach, Kew Gardens, Surrey, TW9 3QD, England |
| GILMOUR, Isla, Dr RESIGNED | Director | 05 Dec 2005 | 20 Jun 2014 | United Kingdom | February 1973 | Flat 8 12 Kew Gardens Road, Kew, Surrey, TW9 3HG |
| HEMMINGS, Joyce RESIGNED | Director | 11 Jun 1998 | 25 Nov 2003 | | July 1935 | Flat 12 12 Kew Gardens Road, Richmond, Surrey, TW9 3HG |
| MORLEY, Ralph RESIGNED | Director | 22 Apr 2003 | 31 Mar 2004 | | May 1948 | Flat 2, 12 Kew Gardens Road, Richmond, Surrey, TW9 3HG |
| OSBORNE, Sarah Jane RESIGNED | Director | 11 Jun 1998 | 04 Oct 2000 | | March 1959 | Carregwen, Trelech, Carmarthen, Carmarthenshire, SA33 6DL |
| TESTER, William Andrew Joseph RESIGNED | Nominee Director | 11 Jun 1998 | 11 Jun 1998 | United Kingdom | June 1962 | 4 Geary House, Georges Road, London, N7 8EZ |
| TIERNEY, Peter RESIGNED | Director | 25 Nov 2003 | 16 Nov 2007 | | March 1968 | Flat 1, 12 Kew Gardens Road, Kew, Richmond, Surrey, TW9 3HG |
| WARKIN, Ruth RESIGNED | Director | 13 Dec 2005 | 03 Aug 2010 | United Kingdom | May 1962 | Flat 7 12 Kew Gardens Road, Richmond, Surrey, TW9 3HG |