| EYRES, Gareth Owen Edward ACTIVE | Secretary | 31 Mar 2013 | | | | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| ALLISON, Thomas Gordon ACTIVE | Director | 27 Apr 2018 | | Wales | March 1980 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| BEBB, Heledd Angharad ACTIVE | Director | 19 Jun 2026 | | Cymru | March 1979 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| DAVIES, Huw Eurig ACTIVE | Director | 10 Apr 2024 | | Cymru | August 1965 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| DAVIES, Owen Wyn ACTIVE | Director | 02 May 2025 | | United Kingdom | August 1961 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| HAVARD, Elinor Moreton ACTIVE | Director | 30 Sep 2022 | | Wales | March 1997 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| JONES, Geraint ACTIVE | Director | 14 Sep 2023 | | Cymru | February 1972 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| OWEN, Dylan Eilir ACTIVE | Director | 30 Sep 2022 | | Wales | December 1973 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| OWENS, Carys ACTIVE | Director | 10 Nov 2023 | | United Kingdom | March 1988 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| REES, Emily Catherine ACTIVE | Director | 02 May 2025 | | Wales | March 1990 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| WILLIAMS, Arwel Prysor ACTIVE | Director | 30 Sep 2022 | | Wales | October 1981 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| WYNNE, Lois Trefor ACTIVE | Director | 11 Sep 2025 | | Cymru | January 1996 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| EVANS, Hywel RESIGNED | Secretary | 30 Sep 1991 | 27 Oct 1999 | | | Dolau, Llanbrynmair, Powys, SY19 7AL |
| GREGORY, Gareth Owain RESIGNED | Secretary | 27 Oct 1999 | 01 Aug 2001 | | | Braeside Y Parc, Blaenavon, Pontypool, Gwent, NP4 9AB |
| LEWIS, Alun Watkin RESIGNED | Secretary | 30 Jul 2003 | 31 Mar 2013 | | | Pennant, 1 Ffordd Dolgoed, Yr Wyddgrug, Sir Y Fflint, CH7 1PE |
| WILLIAMS, David Andrew RESIGNED | Secretary | 01 Aug 2001 | 25 Jul 2003 | | | Dolawen, Pen Y Garth, Caernarvon, Gwynedd, LL55 1EY |
| BOWEN, Dafydd Rhys RESIGNED | Director | 15 Nov 2021 | 10 Apr 2024 | Wales | April 1985 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| BRYER, Huw RESIGNED | Director | 30 Jul 2003 | 31 Oct 2005 | | June 1974 | 32 Granville Avenue, Victoria Park, Caerdydd, CF5 1BW |
| CALDWELL, Betsan RESIGNED | Director | 01 Oct 1997 | 29 Jan 1999 | | August 1954 | Cwmau Uchaf, Pedr Sant, Caerfyrddin, Gar, SA33 5DS |
| EDWARDS, Melfyn Wyn RESIGNED | Director | 28 Jan 2004 | 31 Dec 2010 | Wales | July 1956 | Prysg, Llanrhidian, West Glamorgan, SA3 1EX |
| EVANS, Hywel RESIGNED | Director | 30 Sep 1991 | 08 Mar 2005 | United Kingdom | October 1948 | Dolau, Llanbrynmair, Powys, SY19 7AL |
| EVANS, William Emrys RESIGNED | Director | 30 Sep 1991 | 14 Apr 1999 | | April 1924 | Maesglas, Pen Y Turnpike, Dinas Powys, Vale Of Glamorgan, CF64 4HH |
| EYRES, Gareth Owen Edward RESIGNED | Director | 01 Jul 2013 | 10 Apr 2024 | Wales | March 1983 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| GREGORY, Gareth Owain RESIGNED | Director | 01 Apr 1994 | 01 Aug 2001 | | April 1944 | Braeside Y Parc, Blaenavon, Pontypool, Gwent, NP4 9AB |
| GRIFFITHS, Endaf Huw RESIGNED | Director | 02 May 2007 | 31 Mar 2008 | Wales | May 1975 | Tegfan, North Road, Aberystwyth, Dyfed, SY23 2EL |
| HAYES, Rebecca RESIGNED | Director | 05 Nov 2021 | 05 Nov 2024 | Wales | December 1973 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| JAMES, Dafydd Wynfford RESIGNED | Director | 30 Sep 1991 | 20 Sep 1995 | | May 1951 | Cysgod Y Graig, Stryd Y Gwynt, Llandysul, Dyfed, SA44 4BH |
| JONES, Alun RESIGNED | Director | 01 Oct 1997 | 01 Dec 2022 | Wales | February 1962 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| JONES, Eirlys Pritchard RESIGNED | Director | 01 Oct 1997 | 30 Jul 2003 | Wales | August 1943 | 27 Pwll Y Myn, Llanbedr Y Fro, Bro Morgannwg, CF5 6LR |
| JONES, Elisabeth Menna RESIGNED | Director | 26 Apr 2005 | 05 May 2023 | Wales | May 1961 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| JONES, Fflur RESIGNED | Director | 04 Nov 2015 | 19 Jun 2026 | United Kingdom | November 1975 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| JONES, Owen Thomas, Dr RESIGNED | Director | 01 May 2002 | 06 May 2022 | Wales | October 1951 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| JONES, Sian Lloyd RESIGNED | Director | 29 Jul 2009 | 08 Nov 2019 | United Kingdom | August 1960 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| LEWIS, Alun Watkin RESIGNED | Director | 30 Jul 2003 | 30 Jun 2013 | Wales | September 1952 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| LLOYD-JONES, Corinna Suzanne RESIGNED | Director | 26 Apr 2013 | 25 Aug 2021 | Wales | December 1981 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| LLWYD MORGAN, Derec, Professor RESIGNED | Director | 01 Oct 1997 | 02 Nov 2000 | | November 1943 | Plas Penglais, Aberystwyth, Dyfed, SY23 3DF |
| LLYWELYN, Robin RESIGNED | Director | 02 Nov 2000 | 20 Nov 2007 | Wales | November 1958 | Dorlan Goch, Minffordd, Penrhyndeudraeth, Gwynedd, LL48 6EN |
| OWEN, Rhian RESIGNED | Director | 31 Jul 2015 | 31 Jul 2024 | Wales | March 1965 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| PHILLIPS, Gwenan Jones RESIGNED | Director | 26 Oct 2005 | 31 Mar 2007 | | November 1973 | 56 Heol Maengwyn, Machynlleth, Powys, SY20 8DY |
| PRICE, Adam RESIGNED | Director | 01 Oct 1997 | 01 Aug 2001 | United Kingdom | September 1968 | Flat 2, 20 Darwin Street, London, SE17 1HR |
| PRITCHARD, Richard Iestyn RESIGNED | Director | 30 Jul 2003 | 31 Mar 2007 | United Kingdom | May 1972 | Bryn Teg, Aberangell, Machynlleth, Powys, SY20 9QG |
| PRYSOR, Gwenan RESIGNED | Director | 03 May 2000 | 06 May 2022 | Wales | October 1967 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| REES, Catherine Mary Lodwick RESIGNED | Director | 03 May 2000 | 31 Mar 2013 | United Kingdom | February 1957 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| RHISIART, Martin Gareth, Dr RESIGNED | Director | 14 Oct 2011 | 20 Jun 2017 | Cymru | January 1974 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| RHYS, Elin RESIGNED | Director | 02 May 2007 | 05 May 2023 | Wales | September 1956 | Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH |
| ROBERTS, Bryn RESIGNED | Director | 30 Jul 2003 | 27 Jul 2005 | Wales | July 1955 | 1 Clos Y Gof, St Fagans, Cardiff, CF5 4QQ |
| ROBERTS, Llyr Owain RESIGNED | Director | 01 Dec 2022 | 10 Apr 2024 | Wales | July 1983 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| ROBERTS, Robert Gwynedd RESIGNED | Director | 26 Apr 2006 | 27 Jan 2010 | Wales | February 1956 | 16 Tai Terfyn, Y Felinheli, Gwynedd, LL56 4JJ |
| ROWLANDS, Manon Llwyd RESIGNED | Director | 17 May 2021 | 10 Apr 2024 | Wales | March 1983 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| STEVENS, Mari Sian RESIGNED | Director | 14 Sep 2023 | 14 Jul 2026 | Wales | September 1978 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| THOMAS, Erin Gwenlli RESIGNED | Director | 30 Sep 2022 | 23 Oct 2024 | Wales | May 1994 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| WILLIAMS, David Andrew RESIGNED | Director | 01 Aug 2001 | 25 Jul 2003 | | July 1965 | Dolawen, Pen Y Garth, Caernarvon, Gwynedd, LL55 1EY |
| WILLIAMS, Eirwen RESIGNED | Director | 01 Apr 2010 | 10 Apr 2024 | Cymru | December 1964 | Uned 3, Parc Gwyddoniaeth, Aberystwyth, Ceredigion, SY23 3AH, Wales |
| WILLIAMS, Elen Llwyd RESIGNED | Director | 02 Nov 2009 | 31 Aug 2021 | Cymru | June 1975 | Menter A Busnes, Y Parc Gwyddoniaeth, Aberystwyth, Ceredidigion, SY23 3AH |
| WILLIAMS, Ffiona Wyn RESIGNED | Director | 31 Jan 2001 | 08 Mar 2005 | | July 1962 | Eithinog, Cae Eithin, Minffordd, Gwynedd, LL48 6EL |
| WYN, Sion RESIGNED | Director | 02 Aug 2000 | 28 Jan 2004 | Wales | January 1962 | 3 Pen Y Bryn, Fford Llanddoged, Llanrwst, Gwynedd, LL26 0DT |