| CLARK, Diana Gillian ACTIVE | Secretary | 22 Jan 2008 | | | | Glamorgan Nature Centre, Fountain Road, Tondu Bridgend, Mid Glamorgan, CF32 0EH |
| BAIN, Stuart Mark ACTIVE | Director | 13 Jan 2020 | | Wales | June 1977 | Glamorgan Nature Centre, Fountain Road, Tondu Bridgend, Mid Glamorgan, CF32 0EH |
| TUSA, John Hugh Alexander ACTIVE | Director | 31 Aug 2022 | | England | July 1962 | Glamorgan Nature Centre, Fountain Road, Tondu Bridgend, Mid Glamorgan, CF32 0EH |
| DUNCAN JONES, Sarah Margaret RESIGNED | Secretary | 28 Jul 1994 | 16 Nov 1996 | | | 37 Chamberlain Road, Llandaff North, Cardiff, South Glamorgan, CF4 2LW |
| PHILLIPS, Jessie Diana RESIGNED | Secretary | | 28 Jul 1994 | | | Ivy Cottage, Cwmpennar, Mountain Ash, Mid Glamorgan, CF45 4DB |
| SAUNDERS, Margaret RESIGNED | Secretary | 15 Nov 1997 | 07 Nov 2003 | | | Dolwerdd Heol Y Lan, Idole, Carmarthen, Carmarthenshire, SA32 8DD |
| WILLIAMS, Geoffrey David Vaughan RESIGNED | Secretary | 24 Apr 2004 | 01 Dec 2007 | | | Maesquarre, Bethlehem Road, Llandeilo, Carmarthenshire, SA19 6YA |
| WILSON, William RESIGNED | Secretary | 07 Dec 1996 | 12 Jun 1997 | | | 34 Riverside, Aberkenfig, Bridgend, Mid Glamorgan, CF32 9DA |
| COLLEY, Robert William RESIGNED | Director | 01 Aug 2000 | 16 Sep 2009 | Wales | September 1954 | 4 Waterfall Terrace, Resolven, Neath, West Glamorgan, SA11 4EE |
| COXHEAD, Alex Arnold RESIGNED | Director | | 20 Nov 1993 | | April 1955 | 6 Darran Park, Pontypridd, Mid Glamorgan, CF37 2AN |
| CURTIS, Jeffery Philip RESIGNED | Director | 12 Nov 1994 | 28 Aug 1997 | | January 1946 | 12 St Lythans Close, Dinas Powys, South Glamorgan, CF64 4UB |
| DAVIS, David Gwyn RESIGNED | Director | | 07 Nov 2003 | | September 1928 | 147 Oaklands Road, Bridgend, Mid Glamorgan, CF31 4SX |
| DUNCAN JONES, Sarah Margaret RESIGNED | Director | 28 Jul 1994 | 16 Nov 1996 | | February 1956 | 37 Chamberlain Road, Llandaff North, Cardiff, South Glamorgan, CF4 2LW |
| DUNCAN-JONES, Islwyn Harry RESIGNED | Director | | 12 Nov 1994 | | March 1950 | 37 Chamberlain Road, Llandaff North, Cardiff, South Glamorgan, CF4 2LW |
| DYER, Brian Richard RESIGNED | Director | | 01 Apr 2001 | | June 1941 | 23 Ffordd Yr Ywen, The Coppice Tonteg, Pontypridd, Mid Glamorgan, CF38 1TE |
| ELIAS, John RESIGNED | Director | 21 Nov 1993 | 18 Feb 1994 | | October 1930 | 4 Clos Brynderi, Rhiwbina, Cardiff, South Glamorgan, CF4 6NN |
| FRASER, James Douglas RESIGNED | Director | 29 Jan 2013 | 01 Sep 2022 | Wales | April 1941 | Glamorgan Nature Centre, Fountain Road, Tondu Bridgend, Mid Glamorgan, CF32 0EH |
| GALE, John Hamilton RESIGNED | Director | 13 Nov 1999 | 16 Sep 2009 | Wales | June 1938 | 7 Warwick Road, Sketty, Swansea, West Glamorgan, SA2 8DZ |
| GALE, John Hamilton RESIGNED | Director | | 11 Nov 1995 | Wales | June 1938 | 7 Warwick Road, Sketty, Swansea, West Glamorgan, SA2 8DZ |
| GILLHAM, Mary Eleanor, Dr RESIGNED | Director | | 16 Nov 1996 | | November 1921 | The Cottage, Gwaelod Y Garth, Cardiff, South Glamorgan, CF4 8HS |
| GRIGGS-TREVARTHEN, Stephanie Johanna RESIGNED | Director | 21 Nov 2011 | 07 Jan 2013 | Wales | September 1985 | Glamorgan Nature Centre, Fountain Road, Tondu Bridgend, Mid Glamorgan, CF32 0EH |
| HATHERLEY, Peter Graham, Dr RESIGNED | Director | 13 Jun 1997 | 10 Sep 1999 | | June 1946 | Treetops, The Derwen, Bridgend, Bridgend Cb, CF35 6HD |
| HAVARD, Madeleine Sara Catherine, Dr RESIGNED | Director | 14 Nov 1998 | 31 Mar 2002 | Wales | May 1957 | Lowlands Cottage Crinow, Narberth, Pembrokeshire, SA67 8TB |
| HAVARD, Madeleine Sara Catherine RESIGNED | Director | 12 Nov 1994 | 14 Nov 1997 | | May 1957 | Backway Farm, Peterston Super Ely, Cardiff, CF5 6LH |
| HOPKINS, Anthony, Sir RESIGNED | Director | | 15 Nov 1997 | | December 1937 | 14 Alexander Place, London, SW7 2SF |
| HOWELLS, Mervyn RESIGNED | Director | 13 Nov 1999 | 07 Nov 2003 | | August 1926 | 63 Ashleigh Road, Sketty, Swansea, SA2 8EE |
| HOWELLS, Mervyn RESIGNED | Director | | 11 Nov 1995 | | August 1926 | 63 Ashleigh Road, Sketty, Swansea, SA2 8EE |
| ISAAC, Michael, Dr RESIGNED | Director | | 15 Nov 1997 | | February 1947 | 45 A Hendrefoilan Road, Tycoch, Swansea, West Glamorgan, SA2 9LT |
| JOHN, David Dilwyn, Dr RESIGNED | Director | | 11 Nov 1995 | | November 1901 | 7 Cyncoed Avenue, Cyncoed, Cardiff, South Glamorgan, CF2 6ST |
| JONES, Martin William RESIGNED | Director | 13 Nov 1999 | 10 Jan 2006 | | February 1945 | 13 Cwmdu Road, Cilmaengwyn, Pontardawe, SA8 4QU |
| JONES, Neil Wallbey RESIGNED | Director | 14 Nov 1998 | 16 Sep 2009 | Wales | December 1964 | 35 Henry Street, Neath, West Glamorgan, SA11 1PG |
| JONES, Royston RESIGNED | Director | 21 Nov 1993 | 16 Sep 2009 | Wales | February 1936 | 31 Drumau Road, Birchgrove, Swansea, West Glamorgan, SA7 9QA |
| KOHNSTAMM, William Samuel RESIGNED | Director | | 28 Nov 2003 | | October 1920 | 5 Charlotte Square, Rhiwbina, Cardiff, South Glamorgan, CF4 6ND |
| KWANTES, Catherine Mary Shearn RESIGNED | Director | | 11 Nov 1995 | | June 1919 | 76 Parc Wern Road, Sketty, Swansea, West Glamorgan, SA2 0SF |
| LANSDOWN, Anthony Richard, Dr RESIGNED | Director | | 15 Nov 1997 | | November 1928 | 10 Havergal Close, Caswell, Swansea, West Glamorgan, SA3 4RL |
| LLEWELLYN-JONES, Frank, Professor RESIGNED | Director | | 15 Nov 1997 | | September 1907 | 24 Sketty Park Road, Swansea, West Glamorgan, SA2 9AS |
| LUNN, Mark Anthony Nigel RESIGNED | Director | | 20 Nov 1993 | | November 1957 | 12 Tresillian Close, Llantwit Major, South Glamorgan, CF61 1QX |
| MARKS, Richard RESIGNED | Director | 11 Nov 1995 | 14 Nov 1998 | | January 1939 | Kawartha Park Cottages, Wick Road Ewenny, Bridgend, Mid Glamorgan, CF35 5BL |
| MASON, Rosemary, Dr RESIGNED | Director | | 16 Nov 1996 | | October 1943 | Hunters Hollow, Penmaen, Gower, West Glamorgan, SA3 2HQ |
| MEAD, Howard RESIGNED | Director | 11 Nov 1995 | 16 Nov 1996 | | September 1937 | Pwll Du Cottage, High Pennard, Swansea, West Glamorgan, SA3 2AT |
| METHUEN-CAMBELL, Christopher Paul Mansel RESIGNED | Director | | 04 Feb 1998 | | March 1928 | Penrice Castle, Reynoldston, Swansea, West Glamorgan, SA3 1LA |
| MOGG, Colin Edwin RESIGNED | Director | | 12 Oct 1999 | | February 1936 | Plas Newydd, Heol Spencer Coity, Bridgend, Mid-Glamorgan, CF35 6AS |
| MORAN, Sian Eryl RESIGNED | Director | 21 Nov 1993 | 06 Nov 1996 | | August 1962 | 2 Waterfall Terrace, Resolven, Neath, West Glamorgan, SA11 4EE |
| NOTTAGE, Robert John RESIGNED | Director | 14 Nov 1998 | 09 Jun 2009 | | June 1944 | 32 Village Farm, Bonvilston, Cardiff, CF5 6TY |
| PETERKEN, Andrew George RESIGNED | Director | 14 Nov 1998 | 04 May 2004 | United Kingdom | September 1967 | 21 Elmgrove Place, Dinas Powys, South Glamorgan, CF64 4DJ |
| POWELL, Michael David RESIGNED | Director | | 20 Jan 2001 | | July 1925 | 25 Caswell Road, Mumbles, Swansea, West Glamorgan, SA3 4SD |
| PRICE, Stephen Jenkin RESIGNED | Director | | 12 Nov 1994 | | November 1944 | Maes-Y-Glog, 3 Leighton Rees Close, Ynysybwl, Mid-Glamorgan, CF37 3HW |
| PRITCHARD, David RESIGNED | Director | 28 Mar 2011 | 19 Nov 2018 | Wales | October 1965 | Glamorgan Nature Centre, Fountain Road, Tondu Bridgend, Mid Glamorgan, CF32 0EH |
| RAUM, Alaric Louis Jeffrey RESIGNED | Director | | 16 Sep 2009 | | May 1925 | The Paddock, Walterston, Barry, South Glamorgan, CF62 3AS |
| RAUM, Joan Elizabeth Mary RESIGNED | Director | 07 Mar 1996 | 16 Sep 2009 | | October 1928 | The Paddock, Walterston, Barry, South Glamorgan, CF62 3AS |
| RENSHAW, Eric RESIGNED | Director | | 18 Jun 1998 | | July 1928 | 64 Everest Avenue, Llanishen, Cardiff, South Glamorgan, CF14 5AQ |
| ROBINS, Pamela RESIGNED | Director | | 02 Mar 2000 | | August 1935 | Springfield House, Trerhyngyll, Cowbridge, South Glamorgan, CF7 7TN |
| SAUNDERS, Margaret RESIGNED | Director | 11 Nov 1995 | 07 Nov 2003 | | June 1935 | Dolwerdd Heol Y Lan, Idole, Carmarthen, Carmarthenshire, SA32 8DD |
| SMITH, Eric William RESIGNED | Director | | 16 Jul 1998 | | May 1928 | 4 Orchard Drive, Cardiff, South Glamorgan, CF14 2AE |
| SMITH, Richard George RESIGNED | Director | 11 Nov 1995 | 30 Nov 2002 | | June 1952 | 28 Llanmaes Road, Llantwit Major, South Glamorgan, CF61 2XF |
| THOMAS, Derek Keith, Dr RESIGNED | Director | 14 Sep 2009 | 14 Apr 2011 | Wales | October 1941 | Laburnum Cottage, 12 Manselfield Road Murton, Swansea, West Glamorgan, SA3 3AR |
| TUSA, John Hugh Alexander RESIGNED | Director | 19 Nov 2018 | 13 Jan 2020 | England | July 1962 | Glamorgan Nature Centre, Fountain Road, Tondu Bridgend, Mid Glamorgan, CF32 0EH |
| WILLIAMS, Roy Hugh RESIGNED | Director | | 07 Nov 2003 | | July 1940 | 161 Heol Y Bardd, Bridgend, Mid-Glamorgan, CF31 4TD |
| WILSON, William RESIGNED | Director | 07 Dec 1996 | 01 Feb 2000 | | March 1931 | 34 Riverside, Aberkenfig, Bridgend, Mid Glamorgan, CF32 9DA |
| WINDER, Mark Eulson RESIGNED | Director | 28 Mar 2011 | 15 Oct 2011 | Wales | January 1956 | Glamorgan Nature Centre, Fountain Road, Tondu Bridgend, Mid Glamorgan, CF32 0EH |
| ZEHETMAYR, John Lloyd RESIGNED | Director | | 16 Nov 1996 | | December 1921 | 13 Augusta Road, Penarth, South Glamorgan, CF64 5RH |