| THORN, Jonathan David ACTIVE | Secretary | 21 Feb 2024 | | | | Main Building, Park Place, Cardiff, CF10 3AT, Wales |
| OWEN, David Andrew Arlwydd, Dr ACTIVE | Director | 08 Dec 1999 | | United Kingdom | February 1944 | Room B3/114 Tetricus Science Park, Porton Down, Salisbury, Wiltshire, SP04 0JQ |
| XIBERRAS, Darren Antony ACTIVE | Director | 19 Aug 2022 | | United Kingdom | July 1972 | Main Building, Park Place, Cardiff, CF10 3AT, Wales |
| DAVIES, David Michael RESIGNED | Secretary | 14 May 2001 | 30 Jun 2017 | | | 3 Kelston Place, Whitchurch, Cardiff, South Glamorgan, CF14 2AP |
| JENKINS, Rachel RESIGNED | Secretary | 01 Nov 2019 | 21 Feb 2024 | | | 30-36 Newport Road, Cardiff, CF24 0DE |
| MARCHANT, Stephen RESIGNED | Secretary | 11 Jan 2018 | 01 Nov 2019 | | | 30-36 Newport Road, Cardiff, CF24 0DE |
| EVERSECRETARY LIMITED RESIGNED | Secretary | 07 Oct 2001 | 01 Jan 2002 | | | Sun Alliance House 35 Mosley Street, Newcastle Upon Tyne, NE1 1XX |
| FILBUK (SECRETARIES) LIMITED RESIGNED | Nominee Secretary | 08 Dec 1999 | 14 May 2001 | | | Fitzalan House, Fitzalan Road, Cardiff, South Glamorgan, CF2 1XZ |
| AINSWORTH, Godfrey Howard Harrison, Dr RESIGNED | Director | 10 Jun 2003 | 04 Apr 2013 | England | June 1955 | Mapleridge Cottage, Horton Road, Horton, South Gloucestershire, BS37 6QH |
| BOURNE, Nicholas Bevan RESIGNED | Director | 08 Dec 1999 | 26 Apr 2021 | United Kingdom | April 1961 | 2 Dan Y Mynydd, Thornhill, Cardiff, CF14 9UE |
| DAVIES, David Michael RESIGNED | Director | 08 Dec 1999 | 30 Jun 2017 | Wales | March 1957 | 3 Kelston Place, Whitchurch, Cardiff, South Glamorgan, CF14 2AP |
| DURHAM, David Edward RESIGNED | Director | 10 Jun 2003 | 26 Apr 2007 | United Kingdom | August 1936 | 26 Forrest Road, Penarth, Vale Of Glamorgan, CF64 5DP |
| GRANT, David, Sir RESIGNED | Director | 01 Oct 2004 | 22 Jun 2007 | Wales | September 1947 | The Court, 19 Marine Parade, Penarth, Vale Of Glamorgan, CF64 3BE |
| GRANT, Peter Leonard RESIGNED | Director | 01 Oct 2007 | 04 Apr 2013 | England | June 1959 | Eastgate House 8th Floor, 35-43 Newport Road, Cardiff, CF24 0AB |
| JONES, Owen Thomas, Dr RESIGNED | Director | 08 Dec 1999 | 04 Apr 2013 | Wales | October 1951 | The Brox, 68 Mill Road, Lisvane, Cardiff, South Glamorgan, CF14 0XJ |
| JONES, Roger Spencer, Sir RESIGNED | Director | 08 Dec 1999 | 01 Jan 2006 | United Kingdom | July 1943 | Battle House, Battle, Brecon, Powys, LD3 9RW, United Kingdom |
| JONES, William Colin RESIGNED | Director | 08 Dec 1999 | 04 Apr 2013 | Wales | August 1938 | Penrhos Farm, Nantgarw, Cardiff, CF15 7UN |
| NELSON, Andrew William, Dr RESIGNED | Director | 08 Dec 1999 | 04 Apr 2013 | United Kingdom | January 1955 | Vilaflor, The Rhiw, Craig Penllyne, Cowbridge, South Glamorgan, CF71 7RS |
| PHILLIPS, John Wilson RESIGNED | Director | 08 Dec 1999 | 30 Sep 2002 | United Kingdom | November 1934 | Ash Hall, Ystradowen, Cowbridge, South Glamorgan, CF71 7SY |
| PHILLIPS, Peter John, Sir RESIGNED | Director | 08 Dec 1999 | 20 Jun 2005 | | June 1930 | Great House, Llanblethian, Cowbridge, CF71 7JG |
| PITTARD DAVIES, Kathryn Jane RESIGNED | Director | 08 Dec 1999 | 01 Sep 2004 | United Kingdom | June 1963 | 24 Porth Y Castell, Barry, South Glamorgan, CF62 6QB |
| WILLIAMS, Robert Edward RESIGNED | Director | 03 Jul 2017 | 31 Dec 2021 | England | November 1954 | 30-36 Newport Road, Cardiff, CF24 0DE |