| BULLER, Ruth ACTIVE | Director | 11 Jan 2019 | | England | October 1965 | Nexus, Discovery Way, University Of Leeds, Leeds, LS2 3AA, England |
| HOPPER, Dennis ACTIVE | Director | 23 Apr 2004 | | England | May 1957 | Nexus, Discovery Way, University Of Leeds, Leeds, LS2 3AA, England |
| METCALFE, Richard ACTIVE | Director | 24 Nov 2023 | | England | September 1979 | Nexus, Discovery Way, University Of Leeds, Leeds, LS2 3AA, England |
| WADSWORTH, Robert James ACTIVE | Director | 24 Nov 2023 | | England | September 1980 | Nexus, Discovery Way, University Of Leeds, Leeds, LS2 3AA, England |
| ALLEN, William David RESIGNED | Secretary | 04 Dec 1991 | 30 Nov 1996 | | | 23 Grove Court, Leeds, West Yorkshire, LS6 4AE |
| KELLY, Stephen Anthony RESIGNED | Secretary | 01 Dec 1996 | 31 Dec 2002 | | | 54 Westgate, Leeds, West Yorkshire, LS20 8HJ |
| LILLYWHITE, John Christopher RESIGNED | Secretary | 31 Dec 2002 | 01 Jan 2007 | | | 28 West Park Avenue, Roundhay, Leeds, West Yorkshire, LS8 2EB |
| SMITH, Helena Mary RESIGNED | Secretary | 01 Jan 2007 | 30 Apr 2025 | | | Nexus, Discovery Way, University Of Leeds, Leeds, LS2 3AA, England |
| SIMCO COMPANY SERVICES LIMITED RESIGNED | Nominee Secretary | 09 May 1991 | 04 Dec 1991 | | | 41 Park Square, Leeds, West Yorkshire, LS1 2NS |
| BENNELL, Julia, Professor RESIGNED | Director | 30 Nov 2018 | 10 Jun 2024 | England | December 1971 | Nexus, Discovery Way, University Of Leeds, Leeds, LS2 3AA, England |
| CHAPMAN, Antony John, Dr RESIGNED | Director | 08 Jun 1995 | 31 Jul 1998 | | April 1947 | 4 Breary Lane East, Bramhope, Leeds, West Yorkshire, LS16 9BJ |
| HEAD, Raymond, Dr RESIGNED | Director | | 31 Jul 1993 | | July 1927 | Rushgarth, Mill Lane Pateley Bridge, Harrogate, North Yorkshire, HG3 5BA |
| HICKS, Martin Leslie RESIGNED | Director | 20 Oct 1993 | 15 Apr 2023 | England | February 1953 | Nexus, Discovery Way, University Of Leeds, Leeds, LS2 3AA, England |
| LINDLEY, David RESIGNED | Director | 25 Jan 2000 | 23 Apr 2004 | | March 1948 | 5 Skippon Terrace, Thorner, Leeds, West Yorkshire, LS14 3HA |
| LOCK, Andrew Raymond, Professor RESIGNED | Director | 04 Oct 2001 | 24 Oct 2008 | England | September 1947 | 141 Hale Road, Hale, Altrincham, Cheshire, WA15 8RT |
| MOIZER, Peter, Professor RESIGNED | Director | 24 Oct 2008 | 19 Oct 2018 | England | October 1951 | Outwood House, 31 Station Road, Tadcaster, Leeds, West Yorkshire, LS24 9JE |
| MORTON, Owen Thomas RESIGNED | Director | 25 Jan 2000 | 01 Jan 2025 | United Kingdom | February 1951 | Nexus, Discovery Way, University Of Leeds, Leeds, LS2 3AA, England |
| ROBERTS, Alan Clive, Colonel RESIGNED | Director | 04 Dec 1991 | 26 Apr 2019 | England | April 1934 | The Grange, Rein Road Morley, Leeds, West Yorkshire, LS27 0HZ |
| STODDART-SCOTT, John David Malcolm RESIGNED | Director | 04 Dec 1991 | 23 Feb 2024 | United Kingdom | August 1943 | Creskeld Hall, Arthington, Leeds, West Yorkshire, LS21 1NT |
| TAYLOR, Christopher Malcolm, Professor RESIGNED | Director | 01 Aug 1998 | 31 Jul 2001 | England | January 1943 | Sunnybank, Crag Lane, Huby, Leeds, LS17 0BW |
| TODD, Frances, Dr RESIGNED | Director | 04 Dec 1991 | 01 May 1995 | | October 1944 | 21 Montfort Close, Horsforth, Leeds, West Yorkshire, LS18 5SX |
| WILSON, Alan, Prof Sir RESIGNED | Director | 26 Mar 1992 | 20 Aug 1998 | | January 1939 | Vice Chancellors Lodge, Grosvenor Road, Leeds, West Yorkshire, LS6 2DZ |
| SIMCO DIRECTOR A LIMITED RESIGNED | Nominee Director | 09 May 1991 | 09 May 1993 | | | 41 Park Square, Leeds, West Yorkshire, LS1 2NS |
| SIMCO DIRECTOR B LIMITED RESIGNED | Nominee Director | 09 May 1991 | 09 May 1993 | | | 41 Park Square, Leeds, West Yorkshire, LS1 2DS, England |