| TURNER, Jennifer Leigh ACTIVE | Secretary | 06 Jul 2026 | | | | Of1/Of2, Washington Business Centre, 2 Turbine Way, Sunderland, Tyne And Wear, SR5 3NZ, United Kingdom |
| JOHANSSON, Peter Kurt ACTIVE | Director | 06 Jul 2026 | | United States | June 1964 | Of1/Of2, Washington Business Centre, 2 Turbine Way, Sunderland, Tyne And Wear, SR5 3NZ, United Kingdom |
| WHALE, Colin Ian Brodie ACTIVE | Director | 06 Jul 2026 | | England | August 1980 | Of1/Of2, Washington Business Centre, 2 Turbine Way, Sunderland, Tyne And Wear, SR5 3NZ, United Kingdom |
| BONNER, Stephen RESIGNED | Secretary | 30 Dec 1996 | 31 Mar 2001 | | | 22 Whittonstall, Fatfield, Washington, Tyne & Wear, NE38 8PH |
| CUNNINGHAM, Neil RESIGNED | Secretary | | 06 Jun 1992 | | | 36 North Drive, Cleadon, Sunderland, Tyne & Wear, SR6 7SP |
| DE JONG, Roeland RESIGNED | Secretary | 21 Jun 2005 | 15 Mar 2006 | | | Kopspoor 8, Capelle Aan Den Ijssel, 2908 Ba, Netherlands |
| MULDER, Rob RESIGNED | Secretary | 01 Apr 2001 | 21 Jun 2005 | | | Buizerderf 20, 2250 Mt Voorschoten, Netherlands |
| PEARSON, Alan RESIGNED | Secretary | 17 Apr 1996 | 30 Dec 1996 | | | 5 Plantation Grove, Bill Quay, Gateshead, Tyne & Wear, NE10 0TB |
| PETERSON, Jay Carl RESIGNED | Secretary | 30 Sep 2010 | 05 May 2021 | | | Seventh Avenue, Team Valley Trading Estate, Gateshead, Tyne & Wear, NE11 0JW |
| RALPH, David RESIGNED | Secretary | 15 Mar 2006 | 30 Sep 2010 | | | 1762 Oak Forest Drive, New Braunfels, Texas, Tx 78132, Usa |
| SMITH, Robert RESIGNED | Secretary | 06 Jun 1992 | 17 Apr 1996 | | | 39 Cleadon Meadows, Cleadon, Sunderland, Tyne & Wear, SR6 7PH |
| ALEXANDER, David Thomas RESIGNED | Director | 06 Sep 1992 | 10 May 1995 | | February 1952 | 4409 Centerpoint Road, San Marcos, Texas, Guadalupe 78666, United States Of America |
| ALEXANDER, George Peyton RESIGNED | Director | 01 Dec 2009 | 12 Apr 2017 | Usa | August 1950 | Seventh Avenue, Team Valley Trading Estate, Gateshead, Tyne & Wear, NE11 0JW |
| ALLISON, John RESIGNED | Director | 01 Dec 2009 | 06 Jul 2026 | Scotland | August 1963 | Of1/Of2, Washington Business Centre, 2 Turbine Way, Sunderland, Tyne And Wear, SR5 3NZ, United Kingdom |
| BINGHAM, Rodney Lynn RESIGNED | Director | 01 Dec 2009 | 12 Apr 2017 | Usa | April 1951 | Seventh Avenue, Team Valley Trading Estate, Gateshead, Tyne & Wear, NE11 0JW |
| BONNER, Stephen RESIGNED | Director | 01 Apr 1999 | 31 Mar 2001 | England | April 1956 | 22 Whittonstall, Fatfield, Washington, Tyne & Wear, NE38 8PH |
| BURDICK, Mark RESIGNED | Director | 31 Mar 2001 | 31 Dec 2008 | | October 1958 | 100 Thermon Drive, San Marcos Texas, 7866, Usa |
| BURDICK, Richard Lewis RESIGNED | Director | | 30 Jun 2002 | | May 1929 | 100 Thermon Drive, San Marcos Texas 78666, United States Of America |
| CUNNINGHAM, Neil RESIGNED | Director | | 06 Nov 1992 | | July 1937 | 36 North Drive, Cleadon, Sunderland, Tyne & Wear, SR6 7SP |
| DE JONG, Roeland RESIGNED | Director | 21 Jun 2005 | 15 Mar 2006 | | May 1955 | Kopspoor 8, Capelle Aan Den Ijssel, 2908 Ba, Netherlands |
| FOX, Kevin RESIGNED | Director | 01 Jun 2021 | 12 Apr 2024 | United States | April 1984 | Of1/Of2, Washington Business Centre, 2 Turbine Way, Sunderland, Tyne And Wear, SR5 3NZ, United Kingdom |
| MULDER, Rob RESIGNED | Director | 01 Apr 2001 | 21 Jun 2005 | | January 1949 | Buizerderf 20, 2250 Mt Voorschoten, Netherlands |
| PEARSON, Alan RESIGNED | Director | | 31 Mar 2001 | | December 1955 | 5 Plantation Grove, Bill Quay, Gateshead, Tyne & Wear, NE10 0TB |
| PETERSON, Jay Carl RESIGNED | Director | 30 Sep 2010 | 05 May 2021 | United States | January 1957 | Seventh Avenue, Team Valley Trading Estate, Gateshead, Tyne & Wear, NE11 0JW |
| PITZER, Preston Kenneth RESIGNED | Director | | 22 Nov 1995 | | July 1941 | 100 Thermon Drive, San Marco San Marcos Texas 78666, United States Of America |
| RALPH, David RESIGNED | Director | 21 Jun 2005 | 30 Sep 2010 | Usa | December 1956 | 1762 Oak Forest Drive, New Braunfels, Texas, Tx 78132, Usa |
| SCHOTT, Jan Leigh RESIGNED | Director | 21 Mar 2025 | 06 Jul 2026 | United States | February 1969 | Of1/Of2, Washington Business Centre, 2 Turbine Way, Sunderland, Tyne And Wear, SR5 3NZ, United Kingdom |
| SMITH, Paul RESIGNED | Director | 06 Jul 1992 | 10 May 1995 | United Kingdom | June 1959 | 39 Sunnirise, Cleadon, South Shields, Tyne & Wear, NE34 8DP |
| VAN PELT, Reinald Hermanus-Johanna, Director RESIGNED | Director | 16 Sep 2008 | 31 Dec 2009 | | March 1956 | None, Rogaland 18, Capelle Aan Den Yssel, Netherlands, 2905 AR, Netherlands |