| BLAKE, Matthew J ACTIVE | Director | 31 Mar 2025 | | United States | October 1970 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| DITTRICH, Sandra ACTIVE | Director | 01 Jan 2025 | | England | June 1977 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| THORP, Ryan J ACTIVE | Director | 31 Dec 2023 | | United States | June 1980 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| BILLINGTON, Steven John RESIGNED | Secretary | 22 May 1995 | 31 Mar 2015 | | | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| GRIFFITHS, Roy RESIGNED | Secretary | | 31 Dec 1993 | | | 19 St Leonards Way, Ardsley, Barnsley, South Yorkshire, S71 5BS |
| STEVENSON, Lisa Marie RESIGNED | Secretary | 04 Dec 2018 | 30 Jun 2021 | | | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| WINGFIELD, Ian RESIGNED | Secretary | 01 Apr 2015 | 17 Oct 2018 | | | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| WOOD, Deborah Mary RESIGNED | Secretary | 01 Jan 1994 | 24 Nov 1994 | | | 111 Greenhow Street, Walkley, Sheffield, Yorkshire, S6 3TN |
| AHTILA, Reijo RESIGNED | Director | | 11 Mar 1994 | | September 1948 | Kokinkylantie 6b2, 02180 Espoo, FOREIGN, Finland |
| ASTELJOKI, Jussi Akseli RESIGNED | Director | 20 Dec 1995 | 03 Jul 1996 | | June 1945 | Friisinniityntie 10a, Espoo, 02210, Finland |
| BARRETT, Sean Colin RESIGNED | Director | 05 Nov 2004 | 12 Jan 2005 | United Kingdom | December 1960 | 90a Newbold Road, Desford, Leicestershire, LE9 9GS |
| BENECKI, Walter Thomas RESIGNED | Director | 03 Jul 1996 | 29 Jun 2001 | | November 1939 | 11n230 Williamsburg Drive, Elgin, Illinios, 60123, Usa |
| BILLINGTON, Steven John RESIGNED | Director | 02 Mar 2007 | 31 Mar 2015 | England | May 1957 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| BRAMLEY, Donald Grant RESIGNED | Director | 12 Jan 2005 | 12 Jul 2010 | Usa | December 1965 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| DEE, James Digiacomo, Mr. RESIGNED | Director | 08 Dec 1997 | 09 Dec 2003 | United States | July 1957 | 157 Pheasant Field Lane, Moorestown, Nj 08057, FOREIGN, Usa |
| DONEGAN, Mark RESIGNED | Director | 01 Mar 2004 | 05 Nov 2004 | | July 1956 | 2130 Windham Oaks Court, West Linn, Or 97068, Usa |
| EWALD, Oliver Christian RESIGNED | Director | 12 Jan 2005 | 12 Jul 2010 | Usa | August 1969 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| GBUREK, John Lawrence RESIGNED | Director | 07 Sep 2001 | 16 Apr 2003 | | March 1959 | 583 Cole Drive, South Elgin, Illinois, 60177, Usa |
| HUNT, George Robert RESIGNED | Director | 31 Mar 1999 | 21 Feb 2007 | | October 1952 | 4 Whiston Grove, Rotherham, South Yorkshire, S60 2TX |
| HUNT, George Robert RESIGNED | Director | | 03 Jul 1996 | | October 1952 | 4 Whiston Grove, Rotherham, South Yorkshire, S60 2TX |
| ISOHERRANEN, Seppo Antero RESIGNED | Director | 11 Mar 1994 | 03 Jul 1996 | | January 1943 | Helsingintie 23a, Kauniainen, 02700, Finland |
| JOHNSON, Richard Ernest RESIGNED | Director | | 03 Jul 1996 | | April 1943 | 5 Wyatt Road, Lincoln, LN5 8EB |
| KASER, Michael David RESIGNED | Director | 12 Jan 2005 | 04 Feb 2009 | | September 1953 | 57 Scarborough Park, Rochester, Ny 14625, Usa |
| KIRK, Michael David RESIGNED | Director | 03 Jul 1996 | 30 Apr 2000 | England | April 1938 | 46 Shirley Road, Leicester, Leicestershire, LE2 3LJ |
| LARSSON, William Dean RESIGNED | Director | 24 Dec 2004 | 12 Jan 2005 | | June 1945 | 1865 Palisades Terrace, Lake Oswego, Oregon 97034, Usa |
| LARSSON, William Dean RESIGNED | Director | 01 Mar 2004 | 05 Nov 2004 | | June 1945 | 1865 Palisades Terrace, Lake Oswego, Oregon 97034, Usa |
| LYONS, Derek Alan RESIGNED | Director | | 31 Oct 1991 | United Kingdom | April 1952 | 49 Greengate Lane, High Green, Sheffield, S35 3GS |
| MCNEIL, Gordon Howard RESIGNED | Director | 12 Jan 2005 | 12 Jan 2005 | | September 1941 | 44 Oak Meadow Trail, Pittsford, New York 14534, United States Of America |
| MCNEIL, Gordon Howard RESIGNED | Director | 24 Dec 2004 | 31 Dec 2007 | | September 1941 | 44 Oak Meadow Trail, Pittsford, New York 14534, United States Of America |
| MCNEIL, Gordon Howard RESIGNED | Director | 06 May 2003 | 05 Nov 2004 | | September 1941 | 44 Oak Meadow Trail, Pittsford, New York 14534, United States Of America |
| MCQUEEN, David RESIGNED | Director | 25 Jul 2022 | 31 Dec 2024 | England | October 1969 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| MILLER, Daniel RESIGNED | Director | 27 Sep 2016 | 31 Mar 2025 | United States | December 1950 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| MORRASH, John RESIGNED | Director | 03 Jul 1996 | 11 Jun 1999 | | December 1954 | 3901 Sherwood Lane, Doylestown Pennsylvania, Bucks County 18901, FOREIGN, Usa |
| NERENBERG, Aaron RESIGNED | Director | 03 Jul 1996 | 01 May 1997 | | September 1940 | 810 Pinewood Drive, Elkins Park, Pennsylvania, 19027, Usa |
| NOLAN, William RESIGNED | Director | 03 Jul 1996 | 15 Apr 1999 | | November 1945 | 55 Hastings Road, Sheffield, S7 2GT |
| ONNELA, Kalevi RESIGNED | Director | | 03 Jul 1996 | | September 1942 | Pensaskertuntie 1, Sf-02660, Espoo, Finland |
| RHODES, Darren George RESIGNED | Director | 30 Jun 2021 | 15 Jul 2022 | England | March 1974 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| SATUR, Martin John Roland RESIGNED | Director | | 03 Jul 1996 | | May 1958 | 103 Carr Lane, Dronfield Woodhouse, Sheffield, South Yorkshire, S18 5XF |
| STACHURA, Michael RESIGNED | Director | 04 Feb 2009 | 27 Sep 2016 | Usa | June 1955 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| STEVENSON, Lisa Marie RESIGNED | Director | 04 Dec 2018 | 30 Jun 2021 | England | May 1981 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| SWANSON, David Paul RESIGNED | Director | 27 Sep 2016 | 31 Dec 2023 | United States | September 1973 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| VEISTINEN, Mauri RESIGNED | Director | | 01 Jan 1996 | | May 1953 | Outokumpu Magnets Oy, PO BOX 60 Pori Sf-28101, Finland |
| WILSON, Timothy RESIGNED | Director | 17 Jan 2008 | 06 Jun 2016 | Usa | August 1960 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| WINGFIELD, Ian RESIGNED | Director | 01 Apr 2015 | 17 Oct 2018 | England | February 1971 | Vector 31 Waleswood Way, Wales, Sheffield, S26 5NU |
| ZMINDA, Margaret RESIGNED | Director | 05 Jul 1999 | 09 Dec 2003 | | November 1958 | 847 Clover Drive, North Wales, Pa 19454, Usa |