| MATTA, Manish ACTIVE | Director | 21 Mar 2025 | | India | December 1979 | Raghu Vamsi Machine Tools Pvt Ltd, Plot No 60/A, Ida Gandhinagar, Hyderabad, 500037, India |
| NEWBY, Shaun Andrew ACTIVE | Director | 16 Sep 2024 | | England | November 1986 | Unit D1, Harrison Street, Rotherham, S61 1EE, England |
| THICKETT, Leslie Allan RESIGNED | Secretary | | 07 Dec 2016 | | | 196 Clee Road, Grimsby, South Humberside, DN32 8NG |
| TRISTRAM, Alexander RESIGNED | Secretary | 07 Dec 2016 | 06 Nov 2017 | | | Unit 6b, Newton Business Centre, Newton Chamber Road, Chapeltown, Sheffield, S35 2PH, England |
| ALLEN, Joanna Claire RESIGNED | Director | 07 Dec 2016 | 28 Sep 2020 | England | December 1976 | Pressure Technologies Building, Meadowhall Road, Sheffield, S9 1BT, England |
| CRAMPIN, Matthew Lee RESIGNED | Director | 07 Dec 2016 | 05 Apr 2017 | United Kingdom | April 1972 | Unit 6b, Newton Business Centre, Newton Chamber Road, Chapeltown, Sheffield, S35 2PH, England |
| HAMMELL, Stephen John RESIGNED | Director | 23 May 2023 | 08 Oct 2024 | United Kingdom | July 1973 | Pressure Technologies Building, Meadowhall Road, Sheffield, S9 1BT, United Kingdom |
| HARNETT, Alexander Adair RESIGNED | Director | 23 May 2022 | 31 Mar 2023 | England | August 1989 | Pressure Technologies Building, Meadowhall Road, Sheffield, S9 1BT, England |
| HAYWARD, John Trevor Saxelby RESIGNED | Director | 07 Dec 2016 | 01 Oct 2018 | United Kingdom | September 1961 | Unit 6b, Newton Business Centre, Newton Chamber Road, Chapeltown, Sheffield, S35 2PH, England |
| LAWRENCE, Geoffrey David RESIGNED | Director | | 01 Jul 2011 | United Kingdom | November 1943 | Abbeyview, South End, Goxhill, Barrow Upon Humber, South Humberside, DN19 7LT |
| LOCKING, James RESIGNED | Director | 23 May 2022 | 03 Mar 2023 | England | December 1972 | Pressure Technologies Building, Meadowhall Road, Sheffield, S9 1BT, England |
| MARSH, Brian RESIGNED | Director | | 07 Dec 2016 | England | May 1942 | 53 Lindum Road, Cllethorpes, South Humberside |
| MCCULLOCH, Katherine Mary RESIGNED | Director | 07 Dec 2016 | 31 Jul 2020 | England | July 1984 | Unit 6b, Newton Business Centre, Newton Chamber Road, Chapeltown, Sheffield, S35 2PH, England |
| RAINES, Ronald John Christopher RESIGNED | Director | | 07 Dec 2016 | United Kingdom | December 1947 | 12, Standish Lane, Immingham, North East Lincolnshire, DN40 2HA |
| ROGERS, Michael Ernerst RESIGNED | Director | | 13 Apr 2007 | | April 1942 | 7 Midfield Place, Humberston, Grimsby, South Humberside, DN36 4TJ |
| STROUD, Edward Emlyn RESIGNED | Director | 11 Sep 2017 | 31 Jul 2020 | England | September 1966 | Unit D1, Harrison Street, Rotherham, S61 1EE, England |
| THICKETT, Leslie Allan RESIGNED | Director | | 07 Dec 2016 | England | April 1947 | 196 Clee Road, Grimsby, South Humberside, DN32 8NG |
| WALTERS, Christopher Lee RESIGNED | Director | 01 Oct 2018 | 08 Oct 2024 | United Kingdom | January 1969 | Unit D1, Harrison Street, Rotherham, S61 1EE, England |
| WEBSTER, Christopher James RESIGNED | Director | 23 May 2022 | 21 Mar 2025 | United Kingdom | August 1972 | Unit D1, Harrison Street, Rotherham, S61 1EE, England |
| WOOD, Martin Richard RESIGNED | Director | 23 Apr 2018 | 31 Oct 2018 | England | October 1969 | Roota Engineering, Unit D1, Harrison Street, Rotherham, S61 1EE, England |