| TAYLOR, Anne ACTIVE | Secretary | 14 Jul 2023 | | | | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| DILLON, John Michael ACTIVE | Director | 01 Sep 2022 | | England | February 1981 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| VAN DEN BERGHE, Pim ACTIVE | Director | 01 May 2025 | | Netherlands | January 1976 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| DAY, Richard Anthony RESIGNED | Secretary | | 30 Apr 1999 | | | 4 Argyll Close, Horsforth, Leeds, West Yorkshire, LS18 5SP |
| HOUSLEY, Claire Anne RESIGNED | Secretary | 30 Jun 2020 | 14 Jul 2023 | | | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| PARKER, Kevin Michael RESIGNED | Secretary | 01 May 1999 | 30 Jun 2020 | | | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF, England |
| ABLETT, Roger Colin RESIGNED | Director | 02 Feb 2007 | 30 Dec 2014 | England | July 1970 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF, England |
| ANDERSON, Stuart RESIGNED | Director | 01 Sep 2011 | 30 Dec 2014 | Great Britain | April 1964 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF, England |
| BAMFIELD, Alfred RESIGNED | Director | | 30 Jun 1995 | | March 1937 | 4 The Courtway, Ackworth, Pontefract, West Yorkshire, WF7 7NT |
| BEARDALL, Malcolm Derek RESIGNED | Director | 01 Aug 1997 | 21 Dec 2006 | | November 1947 | Glenshirra Lodge Main Street, Alne, York, YO61 1TD |
| CRAIG, Scott Kirk RESIGNED | Director | 09 Jun 2014 | 12 Jan 2017 | England | October 1964 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| CROFT, Philip RESIGNED | Director | 01 Feb 1996 | 31 Jul 1997 | | June 1936 | The Dixies 571a Wimborne Road East, Ferndown, Dorset, BH22 9NL |
| DOWLING, Martin John RESIGNED | Director | 31 Oct 2002 | 24 Feb 2010 | England | February 1960 | 33 Rossett Drive, Harrogate, North Yorkshire, HG2 9NS |
| FAWCETT, Graham RESIGNED | Director | 01 Jul 2012 | 15 Mar 2019 | England | February 1963 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF, England |
| GHOSE, Mary Agnes RESIGNED | Director | | 31 Jul 1997 | | June 1944 | Otterlee Farm, Cottonstones Triangle, Halifax, West Yorks, HX6 3EX |
| HOUSLEY, Claire Anne RESIGNED | Director | 19 Oct 2022 | 01 Mar 2024 | England | February 1991 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| HOWARTH, Ian Martin RESIGNED | Director | 21 Dec 2006 | 31 Jan 2017 | England | June 1957 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF, England |
| IN HET VELD, Andre RESIGNED | Director | 24 May 2017 | 25 Sep 2024 | Netherlands | December 1966 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| LIDDLE, Bryan RESIGNED | Director | 24 May 2017 | 30 Jun 2022 | England | June 1961 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| LIDDLE, Bryan RESIGNED | Director | 01 Feb 2005 | 03 Jun 2013 | United Kingdom | June 1961 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF, England |
| LONGLEY, Malcolm Robert RESIGNED | Director | 17 Oct 1994 | 31 Jan 1996 | | October 1946 | 60 Dencer Drive, Kenilworth, Warwickshire, CV8 2QR |
| MALLOY, Craig RESIGNED | Director | 12 Jan 2017 | 19 Oct 2022 | England | June 1970 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| MCAUSLAND, Colin Hunter Muir RESIGNED | Director | 26 Jan 2001 | 31 Dec 2001 | | December 1944 | Ryal East Farm, Ryal, Matfen, Northumberland, NE20 0SA |
| MCCARROLL, Neil Robert RESIGNED | Director | 02 Dec 2013 | 01 Apr 2016 | United Kingdom | August 1972 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF, England |
| MELLOR, Ian George RESIGNED | Director | 01 Mar 2001 | 31 Mar 2005 | | March 1947 | 20 Osborne Road, Ainsdale, Southport, Merseyside, PR8 2RJ |
| PARKER, Michael David RESIGNED | Director | | 31 May 2004 | | September 1945 | Langwith Wood Upper Langwith, Collingham, Wetherby, West Yorkshire, LS22 5DQ |
| PELSMA, Wiebe Arnold RESIGNED | Director | 31 Mar 2010 | 08 Sep 2023 | Netherlands | May 1963 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| POINTON, Raymond Barry RESIGNED | Director | 01 May 1996 | 01 Mar 2001 | | February 1947 | Deasland House, Deasland Lane Heightington, Bewdley, Worcestershire, DY12 2XQ |
| POINTON, Raymond Barry RESIGNED | Director | | 28 Nov 1994 | | February 1947 | 1 Broomhill Avenue, Moortown, Leeds, West Yorkshire, LS17 6JS |
| PRAAS, Jeroen RESIGNED | Director | 15 Nov 2022 | 01 May 2025 | Netherlands | July 1966 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| ROBERTS, Peter Craven RESIGNED | Director | | 30 Apr 1996 | | June 1943 | Croft House Farm, Manor Road Farnley Tyas, Huddersfield, West Yorkshire, HD4 6UH |
| ROBINSON, Guy Walker RESIGNED | Director | 14 Dec 2020 | 01 Sep 2022 | England | November 1962 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |
| SAUNDERS, Michael John RESIGNED | Director | 21 Dec 2006 | 23 Aug 2011 | England | December 1956 | Haigh Park Road, Stourton, Leeds, West Yorkshire, LS10 1RT |
| SUTCLIFFE, Peter RESIGNED | Director | | 31 Mar 2001 | England | September 1941 | Horsfall Farm, Horsfall Street, Todmorden, Lancashire, OL14 8SR |
| VOERMANS, Roland RESIGNED | Director | 25 Sep 2024 | 30 Apr 2026 | Netherlands | January 1972 | Belmont Works, St. Catherines Avenue, Doncaster, South Yorkshire, DN4 8DF |