| COLLETT, James David ACTIVE | Director | 01 Sep 2023 | | England | October 1975 | Linthwaite Labs, Manchester Road, Linthwaite, Huddersfield, HD7 5QH, England |
| SHAW, Craig Richard ACTIVE | Director | 03 Nov 2025 | | England | January 1977 | Linthwaite Labs, Manchester Road, Linthwaite, Huddersfield, HD7 5QH, England |
| ADAMS, Geoffrey Martin RESIGNED | Secretary | 01 May 2016 | 06 Apr 2018 | | | Linthwaite, Nr Huddersfield, HD7 5QH |
| ALPIN, Janet RESIGNED | Secretary | | 01 May 2016 | | | Linthwaite, Nr Huddersfield, HD7 5QH |
| BLYTHE, Edwin Charles RESIGNED | Secretary | 06 Apr 2018 | 31 Jan 2023 | | | Linthwaite Labs, Manchester Road, Linthwaite, Huddersfield, HD7 5QH, England |
| ADAMS, Geoffrey Martin RESIGNED | Director | 26 Nov 2002 | 04 Feb 2014 | England | September 1960 | The Sunday School, Briestfield, Dewsbury, West Yorkshire, WF12 0NX |
| ATKINSON, Barrie RESIGNED | Director | 20 Feb 1997 | 16 Aug 2013 | United Kingdom | November 1942 | Linthwaite, Nr Huddersfield, HD7 5QH |
| ATTWELL, Paul RESIGNED | Director | 19 Oct 2000 | 27 Apr 2012 | United Kingdom | May 1950 | 5 Platting Road, Lydgate, Saddleworth, OL4 4DL |
| BLYTHE, Edwin Charles RESIGNED | Director | 04 Sep 2018 | 31 Jan 2023 | England | December 1968 | Linthwaite Labs, Manchester Road, Linthwaite, Huddersfield, HD7 5QH, England |
| BRIERLEY, Charles Ashley RESIGNED | Director | 31 Dec 2018 | 02 Dec 2019 | England | January 1963 | Linthwaite, Nr Huddersfield, HD7 5QH |
| BRIERLEY, Charles Ashley RESIGNED | Director | 30 Sep 2009 | 04 Feb 2014 | England | January 1963 | Linthwaite, Nr Huddersfield, HD7 5QH |
| BROWN, David Gerrie RESIGNED | Director | | 11 Sep 1998 | | September 1938 | 86 Red Lane, Meltham, Huddersfield, HD7 3LJ |
| CLOSE, Bryan RESIGNED | Director | 19 Jun 2012 | 04 Jan 2014 | England | January 1961 | Linthwaite, Nr Huddersfield, HD7 5QH |
| DRAUDE, Barry RESIGNED | Director | 31 Oct 2016 | 31 Aug 2018 | United Kingdom | December 1957 | Linthwaite, Nr Huddersfield, HD7 5QH |
| DRAUDE, Barry RESIGNED | Director | 11 Apr 2006 | 04 Feb 2014 | United Kingdom | December 1957 | Linthwaite, Nr Huddersfield, HD7 5QH |
| EDWARDS, Neville Geoffrey RESIGNED | Director | 30 Mar 1998 | 04 Feb 2014 | United Kingdom | June 1953 | Linthwaite, Nr Huddersfield, HD7 5QH |
| GEORGE, Dieno RESIGNED | Director | 23 Oct 2001 | 31 Dec 2018 | England | July 1956 | Linthwaite, Nr Huddersfield, HD7 5QH |
| GREIG, David George Taylor, Dr RESIGNED | Director | | 28 Oct 2005 | | October 1945 | Nymaal Flat House, Linthwaite, Huddersfield, West Yorkshire, HD7 5PR |
| HEYWOOD, Kathryn Maria RESIGNED | Director | 31 Jan 2023 | 01 Sep 2023 | England | June 1974 | Linthwaite Labs, Manchester Road, Linthwaite, Huddersfield, HD7 5QH, England |
| ROSS, Vernon Ellerker RESIGNED | Director | | 03 Feb 1993 | | February 1928 | Butterworth Hill Farm, Outlane, Huddersfield, West Yorkshire, HD3 3FQ |
| SCARLETT-SMITH, Roger Lidderdale RESIGNED | Director | 02 Dec 2019 | 01 Oct 2022 | United Kingdom | November 1959 | Linthwaite, Nr Huddersfield, HD7 5QH |
| SLEGERS, Luc Maurice Godelieva RESIGNED | Director | 14 Feb 2014 | 31 Oct 2017 | Belgium | June 1953 | Linthwaite, Nr Huddersfield, HD7 5QH |
| STEPHENSON, Nigel David RESIGNED | Director | 01 Aug 2023 | 31 Jul 2025 | Switzerland | September 1979 | Linthwaite Labs, Manchester Road, Linthwaite, Huddersfield, HD7 5QH, England |
| SYDOW, Volker RESIGNED | Director | 13 Jun 2025 | 03 Nov 2025 | England | February 1968 | Linthwaite Labs, Manchester Road, Linthwaite, Huddersfield, HD7 5QH, England |
| THORNTON, Jonathan Henry RESIGNED | Director | | 16 Aug 2013 | England | February 1957 | 1 Woodsome Lees, Kirkburton, Huddersfield, West Yorkshire, HD8 0PJ |
| THORNTON, Margaret Betty RESIGNED | Director | | 23 Oct 2001 | | October 1930 | 5 Woodsome Lees, Kirkburton, Huddersfield, West Yorkshire, HD8 0PJ |
| THORNTON, Ralph RESIGNED | Director | | 24 Jun 2004 | | January 1927 | 5 Woodsome Lees, Kirkburton, Huddersfield, West Yorkshire, HD8 0PJ |
| VALENTINE, Joe, Dr RESIGNED | Director | | 12 Apr 1997 | | June 1927 | Wychwood 27 Morland Avenue, Leicester, Leicestershire, LE2 2PF |
| WHITELEY, Nancy RESIGNED | Director | | 23 Oct 2001 | | May 1922 | 93 Lamb Hall Road, Longwood, Huddersfield, West Yorkshire, HD3 3TH |