| Alexia Susan Bennington | Director | 1 Jul 2013 | 8 Feb 2018 | British | 52 years |
| Andrew Derek Pars | Director | 18 Jul 2008 | 7 Jul 2011 | British | 60 years |
| Andrew William Linford | Director | 14 Nov 2011 | 27 Jan 2012 | British | 59 years |
| Anthony Michael Hyams | Director | 19 Jan 1998 | 30 Dec 2004 | British | 77 years |
| Anton Edward Wellenreiter | Director | 15 Apr 2002 | 23 Dec 2004 | British | 57 years |
| Barcosec Limited | Corporate Director | 11 Apr 1997 | 17 Feb 2005 | United Kingdom | - |
| Barometers Limited | Corporate Director | 11 Apr 1997 | 17 Feb 2005 | United Kingdom | - |
| Brian John Blakemore | Director | 19 Jan 1998 | 12 Sept 2008 | British | 74 years |
| Bryan Robin Geoffrey Gilbert Smith | Director | 20 Sept 1992 | 28 Jun 2002 | British | 82 years |
| Catherine Alison Wall | Director | 19 Jan 1998 | 23 Dec 2004 | British | 66 years |
| Christiian Paul Marriott | Director | 18 Jul 2008 | 14 Nov 2011 | British | 56 years |
| Christopher James Elliott | Director | 21 Aug 1997 | 29 Aug 2008 | British | 76 years |
| David Loyd Sawyer | Director | 27 Jan 2012 | 16 Feb 2017 | American | 58 years |
| David Robert Porter | Director | 2 Nov 1992 | 5 May 1995 | British | 82 years |
| Donald Hood Brydon | Director | 1 Jan 1994 | 18 Oct 1996 | British | 81 years |
| Edwood Brian Atling | Director | 20 Sept 1992 | 12 May 1993 | British | 80 years |
| Errol Simon Owen Bishop | Director | 20 Sept 1992 | 30 Jun 1997 | British | 88 years |
| Francis Harwood Banks | Director | 12 Nov 2019 | 6 May 2021 | British | 48 years |
| Francis John Harding | Director | 20 Sept 1992 | 24 Nov 1992 | British | 91 years |
| Geoffrey Milligan | Director | 20 Sept 1992 | 5 May 1995 | British | 94 years |
| Graeme Robert White | Director | 20 Sept 1992 | 4 Mar 2005 | British | 73 years |
| Grant Charles Haggith | Director | 29 Apr 1996 | 19 May 1998 | British | 65 years |
| Iain Scott Douglas | Director | 10 Nov 2014 | 29 Mar 2017 | British | 56 years |
| Ian Craig Whyte | Secretary | 21 Mar 1996 | 6 Oct 1998 | British | - |
| James Campbell Ferrier | Director | 10 Aug 2017 | 7 Mar 2025 | British | 49 years |
| John Laurence Walker | Director | 2 May 2000 | 30 Dec 2004 | British | 68 years |
| John William Gordon Cotton | Director | 20 Sept 1992 | 5 May 1995 | British | 78 years |
| Karen Elizabeth Smith | Director | 6 Mar 2001 | 1 Jun 2001 | British | 64 years |
| Leslie Stewart Allan | Director | 20 Sept 1992 | 31 Oct 1996 | British | 83 years |
| Linda Margaret King | Director | 20 Sept 1992 | 30 Nov 1992 | British | 71 years |
| Lucinda Ann Craighill Horler Webber | Director | 20 Sept 1992 | 21 May 1999 | British | 66 years |
| Manish Temani | Director | 11 May 2021 | 29 Jul 2022 | Indian | 41 years |
| Marc J Glogoff | Director | 20 Apr 2012 | 6 Nov 2014 | American | 55 years |
| Mark Andrew Taylor | Director | 15 Apr 2002 | 23 Dec 2004 | British | 63 years |
| Mark David Cooper | Director | 14 Nov 2011 | 14 Aug 2013 | British | 53 years |
| Mark Francis Beastall | Director | 25 Jun 2014 | 22 Nov 2017 | British | 48 years |
| Michael Ralston Cumming | Director | 20 Sept 1992 | 28 Jul 1995 | British | 86 years |
| Mike Ransom | Director | 20 Sept 1992 | 30 Apr 2003 | British | 78 years |
| Nicholas James Humphries | Director | 2 Mar 1998 | 8 Jan 1999 | British | 59 years |
| Oliver Henry James Stocken | Director | 20 Sept 1992 | 30 Apr 1993 | British | 85 years |
| Owen John Clarke | Director | 19 Jan 1998 | 14 Nov 2011 | British | 63 years |
| Paul Andrew Goodson | Director | 24 Nov 1998 | 10 Oct 2011 | British | 63 years |
| Paul Cunningham | Director | 18 Jun 2001 | 21 Aug 2007 | British | 61 years |
| Paul William Marcuse | Director | 14 Oct 1996 | 10 Dec 1996 | British | 69 years |
| Philip Martin Griesbach | Director | 6 Mar 2001 | 23 Dec 2004 | British | 62 years |
| Ralph Thomas Campion George Sherman Stonor Camoys | Director | 20 Sept 1992 | 1 Jan 1994 | British | 86 years |
| Robert William Myers | Director | 24 Mar 2011 | 14 Nov 2011 | British | 57 years |
| Ryan Paul Hayward | Director | 5 Mar 2018 | 1 Jan 2025 | British | 44 years |
| Simon Anthony Glidden Henderson | Director | 15 Apr 2002 | 23 Dec 2004 | British | 58 years |
| Simon David Brown | Director | 7 Jul 2011 | 14 Nov 2011 | British | 66 years |
| Stanley William Buckley | Director | 12 May 1993 | 5 May 1995 | British | 86 years |
| Stephen Frank Welton | Director | 1 Apr 1996 | 2 Jun 2000 | British | 65 years |
| Steven Alan Tait | Director | 22 Nov 2017 | 4 Nov 2019 | British | 48 years |
| Steven William James Silvester | Director | 15 Apr 2002 | 23 Dec 2004 | British | 62 years |
| Thomas Sutton Lamb | Director | 20 Sept 1992 | 23 Mar 2011 | British | 71 years |
| Trevor John Powell Hart | Secretary | 20 Sept 1992 | 15 Feb 1994 | British | - |
| William Bentley Eborn | Secretary | 15 Feb 1994 | 21 Mar 1996 | British | - |