| BALLARD, Thomas ACTIVE | Director | 15 Apr 2024 | | England | November 1988 | 3, Grey Lane, Witney, OX28 1FN, England |
| BENNETT, Stuart ACTIVE | Director | 15 Apr 2024 | | England | August 1976 | 3, Grey Lane, Witney, OX28 1FN, England |
| LISTER, Thomas James RESIGNED | Secretary | 17 Jul 2008 | 30 Jun 2015 | | | Meadowhall Road, Sheffield, South Yorkshire, S9 1BT |
| TRISTRAM, Alexander William Roger RESIGNED | Secretary | 30 Jun 2015 | 13 Oct 2017 | | | Pressure Technologies Plc, Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| ALLEN, Joanna Claire RESIGNED | Director | 02 Oct 2015 | 03 Jun 2019 | England | December 1976 | Pressure Technologies Plc, Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH |
| BALDERSTON, Monty RESIGNED | Director | 04 Aug 2022 | 15 Apr 2024 | Canada | February 1970 | Griffin House, 135 High Street, Crawley, West Sussex, RH10 1DQ, United Kingdom |
| BURNETT, Andrew RESIGNED | Director | 30 Nov 2015 | 27 Feb 2017 | England | November 1962 | Pressure Technologies Plc, Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH |
| CALDWELL, John Christopher RESIGNED | Director | 06 Jan 2015 | 27 Nov 2015 | England | June 1957 | Meadowhall Road, Sheffield, South Yorkshire, S9 1BT |
| DOUVILLE, Brad Donald RESIGNED | Director | 12 Feb 2018 | 10 Oct 2023 | Canada | December 1969 | Griffin House, 135 High Street, Crawley, West Sussex, RH10 1DQ, United Kingdom |
| FLEMING, Tonya RESIGNED | Director | 03 Mar 2021 | 31 May 2021 | Canada | January 1973 | Griffin House, 135 High Street, Crawley, West Sussex, RH10 1DQ, United Kingdom |
| FREEMAN, Lynda RESIGNED | Director | 30 Mar 2020 | 08 Aug 2022 | Canada | May 1975 | 5 Chambers Way, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| HAYWARD, John Trevor Saxelby RESIGNED | Director | 17 Jul 2008 | 01 Oct 2018 | United Kingdom | September 1961 | Pressure Technologies Plc, Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| KANE, Ian Jack RESIGNED | Director | 10 Oct 2023 | 15 Apr 2024 | Canada | June 1969 | 3605 Gilmore Way, Suite 110, Burnaby, British Columbia V5g 4x5, Canada |
| LISTER, Thomas James RESIGNED | Director | 19 Jan 2009 | 30 Jun 2015 | England | August 1955 | Meadowhall Road, Sheffield, South Yorkshire, S9 1BT |
| MCCULLOCH, Stephen James RESIGNED | Director | 07 Jan 2014 | 28 Jul 2017 | England | March 1975 | Pressure Technologies Plc, Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| MERCER, Glenn RESIGNED | Director | 07 Jan 2014 | 28 Jul 2017 | United Kingdom | November 1964 | Pressure Technologies Plc, Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| REDFERN, Philip Lee RESIGNED | Director | 28 Oct 2011 | 22 Mar 2017 | England | November 1951 | Pressure Technologies Plc, Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH, England |
| TRISTRAM, Alexander RESIGNED | Director | 30 Nov 2015 | 13 Oct 2017 | United Kingdom | August 1986 | Pressure Technologies Plc, Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH |
| WALTERS, Christopher Lee RESIGNED | Director | 01 Oct 2018 | 03 Jun 2019 | United Kingdom | January 1969 | Pressure Technologies Plc, Unit 6b, Newton Business Centre, Newton Chambers Road, Chapeltown, Sheffield, S35 2PH |