| SHAW, Sarah Louise ACTIVE | Secretary | 01 Sep 2025 | | | | 1 Rosalind Franklin Way, Netpark, Sedgefield, County Durham, TS21 3FR, England |
| BLACK, Mark John ACTIVE | Director | 08 Nov 2019 | | England | November 1967 | 1 Rosalind Franklin Way, Netpark, Sedgefield, County Durham, TS21 3FR, England |
| EDINGTON, Nathaniel ACTIVE | Director | 13 May 2024 | | United Kingdom | July 1969 | 1 Rosalind Franklin Way, Netpark, Sedgefield, County Durham, TS21 3FR, England |
| TYERMAN, Michael ACTIVE | Director | 07 Jul 2016 | | England | September 1978 | 1 Rosalind Franklin Way, Netpark, Sedgefield, County Durham, TS21 3FR, England |
| HARRISON, Irene Lesley RESIGNED | Nominee Secretary | 03 Jul 1997 | 01 Oct 1997 | | | Fy Mwthin, 22 Merthyr Road Tongwynlais, Cardiff, South Glamorgan, CF15 7LH |
| HARRISON, Michael Patrick RESIGNED | Secretary | 01 Oct 1997 | 04 Mar 1998 | | | Westways 7 North Lane, Roundhay, Leeds, LS8 2QJ |
| MOYNIHAN, Maura Eilis, Dr RESIGNED | Secretary | 02 Apr 2004 | 01 Jun 2022 | | | Plexus 1 Netpark, Thomas Wright Way, Sedgefield, County Durham, TS21 3FD, England |
| SCHOFIELD, Christopher Ernest RESIGNED | Secretary | 04 Mar 1998 | 02 Apr 2004 | | | 8 George Street, Saltaire, Bradford, West Yorkshire, BD18 3EZ |
| TYERMAN, Michael RESIGNED | Secretary | 01 Jun 2022 | 01 Sep 2025 | | | Plexus 1 Netpark, Thomas Wright Way, Sedgefield, County Durham, TS21 3FD, England |
| BRENNAN, Michael Peter RESIGNED | Director | 18 Sep 2009 | 15 Apr 2014 | United Kingdom | July 1960 | 3 Farr Holme, Blackwell, Darlington, County Durham, DL3 8QZ |
| FRIPP, Simon RESIGNED | Director | 12 May 2000 | 01 Jan 2001 | | April 1967 | Boodles, Thorpe Lane, Guiseley, Leeds, West Yorkshire, LS20 8JH |
| GIBBS, Richard William RESIGNED | Director | 03 Dec 2020 | 13 May 2024 | England | April 1959 | Plexus 1 Netpark, Thomas Wright Way, Sedgefield, County Durham, TS21 3FD, England |
| GIBSON, Iain Andrew RESIGNED | Director | 29 Sep 2006 | 21 Sep 2007 | Scotland | December 1954 | 23 Caledonian Road, Peebles, EH45 9DJ |
| HARRISON, Michael Patrick RESIGNED | Director | 04 Mar 1998 | 12 May 2000 | | February 1959 | Westways 7 North Lane, Roundhay, Leeds, LS8 2QJ |
| HARRISON, Michael Patrick RESIGNED | Director | 01 Oct 1997 | 24 Jan 1998 | | February 1959 | Westways 7 North Lane, Roundhay, Leeds, LS8 2QJ |
| HINDSON, Charles Richard RESIGNED | Director | 25 Mar 2005 | 19 Sep 2008 | England | June 1959 | 21 Gauden Road, London, SW4 6LR |
| KRIER, Peter, Dr RESIGNED | Director | 12 Dec 1997 | 24 Jan 1998 | | October 1963 | Coppers Lodge, Bedale Road, Hunton, North Yorkshire, DL8 1QE |
| MARDIA, Hemant Kumar, Dr RESIGNED | Director | 02 Nov 2007 | 21 Sep 2012 | United Kingdom | November 1961 | The Fold Rudding Dower, Rudding Lane, Harrogate, HG3 1LL |
| MARDIA, Hemant Kumar RESIGNED | Director | 04 Mar 1998 | 28 May 2004 | | November 1961 | 1 Westwood Rise, Ilkley, Leeds, LS29 9SW |
| MARDIA, Hemant Kumar RESIGNED | Director | 01 Oct 1997 | 24 Jan 1998 | | November 1961 | 1 Westwood Rise, Ilkley, Leeds, LS29 9SW |
| MOBBS, Christopher Ian, Dr RESIGNED | Director | 29 Sep 2006 | 20 Nov 2006 | England | April 1962 | The Croft, Burley Road Menston, Ilkley, West Yorkshire, LS29 6NP |
| MOLE, Stephen Richard RESIGNED | Director | 05 Aug 2008 | 18 Sep 2009 | England | April 1956 | 55, Moor Lane, Woodford, Stockport, Cheshire, SK7 1PW |
| MOTHERSDALE, Keith RESIGNED | Director | 01 Oct 1997 | 24 Jan 1998 | | June 1959 | 7 Fyfe Crescent, Charlestown Baildon Shipley, Bradford, West Yorkshire, BD17 6DR |
| NEEDLE, Alan Robert RESIGNED | Director | 21 Sep 2012 | 13 Mar 2015 | England | December 1954 | Meadowcroft, St. James Drive, Harrogate, North Yorkshire, HG2 8HT, United Kingdom |
| RHODES, Barbara Margaret RESIGNED | Director | 26 Jan 1998 | 04 Mar 1998 | England | January 1943 | Dabarda West Winds, Moor Lane Menston, Leeds, West Yorkshire, LS29 6QD |
| RHODES, John David, Professor RESIGNED | Director | 01 Oct 1997 | 29 Sep 2006 | England | October 1943 | West Winds, Moor Lane Menston, Ilkley, West Yorkshire, LS29 6QD |
| ROULSTON, John Francis, Professor RESIGNED | Director | 25 Mar 2005 | 29 Jan 2006 | Scotland | June 1948 | Dun Dornaigh, 35 Boswall Road, Edinburgh, Midlothian, EH5 3RP |
| SMITH, Robert St John RESIGNED | Director | 18 Jun 2014 | 31 Oct 2019 | England | March 1964 | 16, St. Marks Avenue, Harrogate, North Yorkshire, HG2 8AE, England |
| SNOWDEN, Christopher Maxwell, Professor RESIGNED | Director | 01 Jun 2004 | 06 Apr 2005 | England | March 1956 | Blackwell House, Hog's Back, Guildford, Surrey, GU3 1DF |
| THORNTON, Michael John RESIGNED | Director | 12 May 2000 | 28 May 2004 | United Kingdom | May 1952 | 71 Silverdale Avenue, Guiseley, Leeds, West Yorkshire, LS20 8BG |
| TRIGG, Paul RESIGNED | Director | 01 Oct 1997 | 24 Jan 1998 | England | June 1959 | 3 Moorland Gardens, Moortown, Leeds, West Yoirkshire, LS17 6JT |
| WEAVER, Michael Andrew RESIGNED | Director | 25 Jan 2016 | 01 Aug 2019 | England | August 1974 | Filtronic House, 3 Airport West, Lancaster Way Yeadon, Leeds, West Yorkshire, LS19 7ZA |
| BUSINESS INFORMATION RESEARCH & REPORTING LIMITED RESIGNED | Nominee Director | 03 Jul 1997 | 01 Oct 1997 | | | Crown House, 64 Whitchurch Road, Cardiff, CF14 3LX |