| PAPINNIEMI-AINGER, Petra ACTIVE | Secretary | 06 May 2016 | | | | C/O Tmf Group,, 13th Floor, One Angel Court, London, EC2R 7HJ, United Kingdom |
| BUGARCIC, Monalito ACTIVE | Director | 07 Sep 2020 | | Switzerland | June 1975 | C/O Tmf Group,, 13th Floor, One Angel Court, London, EC2R 7HJ, United Kingdom |
| WADHAM, Stephen Michael ACTIVE | Director | 12 Mar 2026 | | United Kingdom | March 1984 | Howmet Aerospace, Kestrel Way, Sowton Industrial Estate, Exeter, EX2 7LG, United Kingdom |
| BERGIN, John Charles Michael Francis RESIGNED | Secretary | 12 Sep 1994 | 05 Sep 2006 | | | 24 Northgate, Tickhill, Doncaster, South Yorkshire, DN11 9HY |
| GREENFIELD, Colin Anthony RESIGNED | Secretary | 31 Dec 1992 | 12 Sep 1994 | | | 6 Thorpe Close, Austerlands, Oldham, Lancashire, OL4 3QL |
| HART, James Thomas RESIGNED | Secretary | 05 Sep 2006 | 24 Feb 2011 | | | Firth House PO BOX 644, Meadowhall Road, Sheffield, South Yorkshire, S9 1JD |
| RYAN, Thomas RESIGNED | Secretary | | 31 Dec 1992 | | | 1 Wendover Drive, Bolton, Lancashire, BL3 4RX |
| SEYMOUR, Christopher David RESIGNED | Secretary | 24 Feb 2011 | 06 May 2016 | | | Firth Rixson House, 26a Atlas Way, Sheffield, South Yorkshire, S4 7QQ, England |
| BERGIN, John Charles Michael Francis RESIGNED | Director | 28 Aug 2001 | 05 Sep 2006 | England | July 1944 | 24 Northgate, Tickhill, Doncaster, South Yorkshire, DN11 9HY |
| BLAND, Peter Simon RESIGNED | Director | 01 Mar 1995 | 20 Nov 2014 | United Kingdom | December 1967 | Firth Rixson House, 26a Atlas Way, Sheffield, South Yorkshire, S4 7QQ, England |
| DOWDALL, Kay Louise, Dr RESIGNED | Director | 20 Nov 2014 | 28 Jun 2019 | United Kingdom | October 1969 | 26a, Atlas Way, Sheffield, S4 7QQ, England |
| EDISBURY, Bryan Anthony RESIGNED | Director | | 12 Sep 1994 | England | May 1939 | 148 Bradshaw Meadows, Bradshaw, Bolton, Lancashire, BL2 4ND |
| FARGAS MAS, Lluis Maria RESIGNED | Director | 06 May 2016 | 07 Sep 2020 | Switzerland | January 1966 | Jfb Overseas Holdings, Johnson Lane, Ecclesfield, Sheffield, S35 9XH, England |
| HALL, David John RESIGNED | Director | | 04 Feb 2003 | | March 1940 | Craglands, Ashopton Road, Bamford, Hope Valley, Derbyshire, S33 0DB |
| HANCOCK, James Frank RESIGNED | Director | 01 Jul 2019 | 16 Dec 2022 | England | January 1978 | C/O Tmf Group, 8th Floor, 20 Farringdon Street, London, EC4A 4AB, United Kingdom |
| HARDIE, Reginald George RESIGNED | Director | | 12 Sep 1994 | | December 1938 | The Bend 451 Chester Road, Woodford, Stockport, Cheshire, SK7 1QP |
| HART, James Thomas RESIGNED | Director | 31 Oct 2006 | 24 Feb 2011 | United Kingdom | September 1972 | Firth House PO BOX 644, Meadowhall Road, Sheffield, South Yorkshire, S9 1JD |
| MACDONALD, Neil Andrew RESIGNED | Director | 12 Sep 1994 | 31 Oct 2006 | England | July 1956 | 21 Clarendon Road, Sheffield, South Yorkshire, S10 3TQ |
| MORTIMER, David Curtis RESIGNED | Director | 15 Jan 2008 | 20 Nov 2014 | Usa | April 1960 | Firth Rixson House, 26a Atlas Way, Sheffield, South Yorkshire, S4 7QQ, England |
| RYAN, Thomas RESIGNED | Director | | 01 Aug 1991 | England | January 1928 | 1 Wendover Drive, Bolton, Lancashire, BL3 4RX |
| SEYMOUR, Christopher David RESIGNED | Director | 23 Feb 2011 | 06 May 2016 | England | May 1973 | Firth Rixson House, 26a Atlas Way, Sheffield, South Yorkshire, S4 7QQ, England |
| WESTWOOD, Julie RESIGNED | Director | | 31 Jan 1995 | | March 1957 | 1 Lyme Vale Road, Billinge, Wigan, Lancashire, WN5 7QR |
| WOODS, Stephen Matthew RESIGNED | Director | 16 Dec 2022 | 12 Mar 2026 | England | July 1972 | C/O Tmf Group,, 13th Floor, One Angel Court, London, EC2R 7HJ, United Kingdom |