| BARKER, Richard Stephen ACTIVE | Secretary | 21 Mar 2016 | | | | Haynes Group Limited, Sparkford, Yeovil, Somerset, BA22 7JJ, United Kingdom |
| BARKER, Richard Stephen ACTIVE | Director | 01 Feb 2018 | | England | November 1981 | Haynes Group Limited, Sparkford, Yeovil, Somerset, BA22 7JJ, United Kingdom |
| CZAJKA, Christophe ACTIVE | Director | 03 Apr 2020 | | United Kingdom | August 1964 | Haynes Group Limited, Sparkford, Yeovil, Somerset, BA22 7JJ, United Kingdom |
| BUNKUM, James Taylor RESIGNED | Secretary | 01 Jan 2008 | 21 Mar 2016 | | | Haynes Publishing Group Plc, High Street, Sparkford, Somerset, BA22 7JJ |
| HAYNES, David Michael RESIGNED | Secretary | | 08 Nov 2000 | | | Anchorage, Sheeplands Lane, Sherborne, Dorset, DT9 4BW |
| VENABLES, Mark Alexander Rowland RESIGNED | Secretary | 08 Nov 2000 | 01 Jan 2008 | | | 7 Farrer Court, Cambridge Park, Twickenham, Middlesex, TW1 2LB |
| BELL, Edward RESIGNED | Director | 12 Oct 2000 | 03 Apr 2020 | England | August 1949 | Sparkford, Yeovil, Somerset, BA22 7JJ |
| BENHARDUS, Dan RESIGNED | Director | 01 Jun 2002 | 31 May 2016 | United States Of America | June 1946 | Haynes Publishing Group Plc, High Street, Sparkford, Somerset, BA22 7JJ |
| BUNKUM, James Taylor RESIGNED | Director | 27 Jan 2016 | 30 Sep 2023 | England | May 1965 | Haynes Group Limited, Sparkford, Yeovil, Somerset, BA22 7JJ, United Kingdom |
| CORBETT, Richard Panton RESIGNED | Director | 01 Mar 1993 | 28 Jan 2009 | United Kingdom | February 1938 | 24 Chapel Street, London, SW1X 7BY |
| DAYKIN, Stephen David Paul RESIGNED | Director | 01 Aug 2016 | 03 Apr 2020 | United Kingdom | June 1957 | Sparkford, Yeovil, Somerset, BA22 7JJ |
| DOLAN, Edwin Kevin Franck RESIGNED | Director | 03 Apr 2020 | 26 Jan 2026 | England | February 1982 | Haynes Group Limited, Sparkford, Yeovil, Somerset, BA22 7JJ, United Kingdom |
| FULLMAN, Keith Charles RESIGNED | Director | | 31 May 2002 | | March 1960 | Edgecumbe 105 Portway, Wells, Somerset, BA5 2BR |
| GARNER, Andrew Charles RESIGNED | Director | 31 Mar 2005 | 09 Sep 2010 | England | August 1944 | Haynes Publishing Group Plc, High Street, Sparkford, Somerset, BA22 7JJ |
| HAYNES, Annette Constance RESIGNED | Director | | 27 Oct 2002 | United Kingdom | October 1938 | Coombe, Bradford Abbas, Sherborne, Dorset, DT9 6JN |
| HAYNES, David Michael RESIGNED | Director | | 08 Nov 2000 | | November 1940 | Anchorage, Sheeplands Lane, Sherborne, Dorset, DT9 4BW |
| HAYNES, John Harold Coleman RESIGNED | Director | 25 Mar 2000 | 03 Apr 2020 | United Kingdom | February 1967 | Haynes Publishing Group Plc, High Street, Sparkford, Somerset, BA22 7JJ |
| HAYNES, John Harold RESIGNED | Director | | 08 Feb 2019 | United Kingdom | March 1938 | Haynes Publishing Group Plc, High Street, Sparkford, Somerset, BA22 7JJ |
| HAYNES, Marc Edward Freeme RESIGNED | Director | 27 Oct 2002 | 16 Oct 2016 | England | April 1968 | Haynes Publishing Group Plc, High Street, Sparkford, Somerset, BA22 7JJ |
| KWARTS, Alexander George RESIGNED | Director | 01 Sep 2010 | 03 Apr 2020 | Netherlands | May 1955 | Sparkford, Yeovil, Somerset, BA22 7JJ |
| NICHOLSON, James Albert RESIGNED | Director | 01 Jun 2017 | 15 Jun 2018 | United States | September 1961 | Sparkford, Yeovil, Somerset, BA22 7JJ |
| OAKLEY, Eric RESIGNED | Director | | 31 May 2016 | Usa | July 1946 | Haynes Publishing Group Plc, High Street, Sparkford, Somerset, BA22 7JJ |
| PEARCE, Steven Max RESIGNED | Director | | 07 Jun 2002 | England | September 1944 | Stourbrook Farm, Armscote Road, Newbold On Stour, Stratford Upon Avon, Warwickshire, CV37 8BZ |
| SUTER, David William RESIGNED | Director | | 28 Jan 2009 | | March 1938 | 21 Preston Road, Yeovil, Somerset, BA21 3AD |
| VAN DER GALIEN, Peter RESIGNED | Director | 01 Feb 2018 | 03 Apr 2020 | Netherlands | June 1967 | Sparkford, Yeovil, Somerset, BA22 7JJ |
| WOLFF, Harvey William RESIGNED | Director | 18 Jul 2019 | 03 Apr 2020 | United States | September 1955 | Sparkford, Yeovil, Somerset, BA22 7JJ |
| WRIGHT, Nina RESIGNED | Director | 01 Aug 2016 | 03 Apr 2020 | United Kingdom | December 1970 | Sparkford, Yeovil, Somerset, BA22 7JJ |
| YATES-ROUND, Jeremy Laurence RESIGNED | Director | 01 Jun 2010 | 03 Apr 2020 | United Kingdom | February 1961 | Sparkford, Yeovil, Somerset, BA22 7JJ |