| Andrew Paul Rydon | Director | 15 Mar 2021 | 7 Feb 2022 | British | 59 years |
| Angela Jane Moon | Secretary | 7 May 1993 | 7 Jan 1994 | British | - |
| Guy David Orme Davenport | Director | 10 Mar 1999 | 1 Mar 2001 | British | 78 years |
| Iain William Hooley | Secretary | 20 Jul 2010 | 4 Oct 2010 | - | - |
| Ian Maxwell-scott | Director | 6 May 2005 | 31 Mar 2018 | British | 81 years |
| Jennifer Elizabeth Mathias | Director | 21 Sept 2023 | 31 Dec 2023 | British | 52 years |
| John Hugh William Beardwell | Director | 31 Oct 1991 | 15 Mar 2000 | British | 90 years |
| Jonathan Peter Wragg | Director | 25 Jul 2007 | 31 Mar 2020 | British | 59 years |
| Judith Edna Price | Director | 6 May 2005 | 3 Jul 2020 | British | 69 years |
| Kathy Cong | Secretary | 4 Oct 2010 | 5 Jul 2013 | - | - |
| Mark John Studdert | Secretary | 31 Oct 1991 | 31 Oct 1993 | British | - |
| Mark John Studdert Redmayne | Director | 31 Oct 1991 | 7 May 1993 | British | 78 years |
| Mark John Studdert Redmayne | Director | 31 Oct 1994 | 30 Aug 2012 | British | 78 years |
| Mark John Studdert Redmayne | Secretary | 31 Jul 1994 | 20 Jun 2007 | British | - |
| Mike Rigby | Director | 15 Mar 2021 | 11 Aug 2022 | British | 57 years |
| Monica Louisa Janssens | Secretary | 21 Jan 1994 | 31 Jul 1994 | British | - |
| Nicholas Wilfrid Bagshawe | Director | 6 May 2005 | 31 Mar 2007 | British | 81 years |
| Nicola Jane Warren | Director | 10 Mar 1999 | 6 May 2005 | British | 61 years |
| Patricia Nicolette Victoria Horrocks | Director | 10 Mar 1999 | 18 Aug 2000 | British | 81 years |
| Paula Mary Watts | Secretary | 20 Jun 2007 | 20 Jul 2010 | British | - |
| Peter Gray | Director | 31 Oct 1991 | 15 Mar 2000 | British | 91 years |
| Rachael Gillard | Director | 10 Mar 1999 | 6 Sept 2002 | British | 55 years |
| Raymond Vaughan | Director | 7 May 1993 | 27 Jun 1994 | British | 86 years |
| Robert Alasdair Mcgregor | Director | 31 Oct 1991 | 31 Oct 1994 | British | 94 years |
| Robert Paul Stockton | Director | 21 Sept 2023 | 1 Jul 2024 | British | 61 years |
| Steven Robert Kilday | Secretary | 5 Jul 2013 | 2 Jan 2023 | - | - |
| Stewart Preston Teague | Director | 1 Mar 2001 | 6 May 2005 | British | 57 years |
| Timothy May | Director | 31 Oct 1991 | 3 Feb 2002 | British | 74 years |
| Wladyslaw Mieczyslaw Jedrzejewski | Director | 31 Oct 1991 | 7 May 1993 | British | 77 years |