| MILLEN, Sally Ann ACTIVE | Secretary | 28 Jul 2026 | | | | Chesterfield Special Cylinders Ltd, Meadowhall Road, Sheffield, S9 1BT, England |
| MILLEN, Sally Ann ACTIVE | Director | 28 Jul 2026 | | United Kingdom | June 1978 | Chesterfield Special Cylinders Ltd, Meadowhall Road, Sheffield, S9 1BT, England |
| WEBSTER, Christopher James ACTIVE | Director | 23 May 2022 | | United Kingdom | August 1972 | Chesterfield Special Cylinders Ltd, Meadowhall Road, Sheffield, S9 1BT, England |
| CLARK, Jonathan Dudley RESIGNED | Secretary | 19 Jan 2007 | 31 Dec 2007 | | | 203 Derby Road, Beeston, Nottingham, Nottinghamshire, NG9 3AP |
| HAYWARD, John Trevor Saxelby RESIGNED | Secretary | 31 Dec 2007 | 14 Aug 2008 | | | 7 Daleswood Avenue, Barnsley, South Yorkshire, S70 6QF |
| HAYWARD, John Trevor Saxelby RESIGNED | Secretary | 10 Dec 2003 | 19 Jan 2007 | | | 7 Daleswood Avenue, Barnsley, South Yorkshire, S70 6QF |
| LISTER, Thomas James RESIGNED | Secretary | 14 Aug 2008 | 30 Jun 2015 | | | Meadowhall Road, Sheffield, South Yorkshire, S9 1BT |
| TRISTRAM, Alexander William Roger RESIGNED | Secretary | 30 Jun 2015 | 06 Nov 2017 | | | Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| WRIGHT, Arron Marc RESIGNED | Secretary | 15 Jan 2024 | 28 Jul 2026 | | | Chesterfield Special Cylinders Ltd, Meadowhall Road, Sheffield, S9 1BT, England |
| GW SECRETARIES LIMITED RESIGNED | Secretary | 18 Aug 2003 | 10 Dec 2003 | | | One Eleven Edmund Street, Birmingham, West Midlands, B3 2HJ |
| ALLEN, Joanna Claire RESIGNED | Director | 02 Oct 2015 | 28 Sep 2020 | England | December 1976 | Pressure Technologies Building, Meadowhall Road, Sheffield, S9 1BT, England |
| BROWN, John William RESIGNED | Director | 20 Aug 2004 | 16 Jul 2010 | England | May 1952 | 58 Highfield Lane, Newbold, Chesterfield, Derbyshire, S41 8AY |
| CATTON, Philip David RESIGNED | Director | 20 Aug 2004 | 27 Apr 2022 | England | June 1957 | Pressure Technologies Building, Meadowhall Road, Sheffield, S9 1BT, England |
| CLARK, Jonathan Dudley RESIGNED | Director | 19 Jan 2007 | 31 Dec 2007 | England | March 1957 | 203 Derby Road, Beeston, Nottingham, Nottinghamshire, NG9 3AP |
| HAENSCH, Gregor Adolf RESIGNED | Director | 10 Dec 2003 | 20 Aug 2004 | | July 1951 | Am Ganseberg 1, Jena, 47749, Germany |
| HAMMELL, Stephen John RESIGNED | Director | 23 May 2023 | 31 Oct 2024 | United Kingdom | July 1973 | Pressure Technologies Building, Meadowhall Road, Sheffield, S9 1BT, United Kingdom |
| HARDING, Alan RESIGNED | Director | 20 Aug 2004 | 21 Nov 2016 | England | May 1956 | Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| HAYWARD, John Trevor Saxelby RESIGNED | Director | 10 Dec 2003 | 01 Oct 2018 | United Kingdom | September 1961 | Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| HOWGATE, Allison Jayne RESIGNED | Director | 23 May 2022 | 02 Dec 2022 | England | February 1967 | Pressure Technologies Building, Meadowhall Road, Sheffield, S9 1BT, England |
| KELLY, John RESIGNED | Director | 10 Aug 2004 | 10 Aug 2004 | | July 1945 | 2 Lindrick Gardens, Walton, Chesterfield, Derbyshire, S40 3JJ |
| LISTER, Thomas James RESIGNED | Director | 14 Aug 2008 | 30 Jun 2015 | England | August 1955 | Meadowhall Road, Sheffield, South Yorkshire, S9 1BT |
| LOCKING, James RESIGNED | Director | 23 May 2022 | 03 Mar 2023 | England | December 1972 | Pressure Technologies Building, Meadowhall Road, Sheffield, S9 1BT, England |
| PINDER, Mick RESIGNED | Director | 16 Jul 2010 | 20 Sep 2019 | England | January 1961 | Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| REDFERN, Philip Lee RESIGNED | Director | 20 Aug 2004 | 16 Jul 2010 | England | November 1951 | 16 Bryony Close, Killamarsh, Sheffield, South Yorkshire, S31 8TF |
| SHACKLADY, Richard Linford RESIGNED | Director | 23 Sep 2004 | 21 Mar 2013 | England | August 1948 | Meadowhall Road, Sheffield, South Yorkshire, S9 1BT |
| STANGER, Paul Michael RESIGNED | Director | 18 Apr 2013 | 23 Mar 2022 | United Kingdom | July 1978 | Chesterfield Special Cylinders Ltd., Meadowhall Road, Sheffield, S Yorkshire, S9 1BT, England |
| WALTERS, Christopher Lee RESIGNED | Director | 01 Oct 2018 | 31 Jul 2026 | United Kingdom | January 1969 | Chesterfield Special Cylinders Ltd, Meadowhall Road, Sheffield, S9 1BT, England |
| GW INCORPORATIONS LIMITED RESIGNED | Director | 18 Aug 2003 | 10 Dec 2003 | | | Windsor House, 3 Temple Row, Birmingham, West Midlands, B2 5JR |