| Alfred Patrick Stirling | Director | 17 Aug 1992 | 13 Jun 2006 | British | 90 years |
| Alfred Patrick Stirling | Director | 14 Jun 2006 | 9 Oct 2008 | British | 90 years |
| Antony Gerard Ebel | Director | 17 Aug 1992 | 13 Jun 2006 | British | 82 years |
| Antony Gerard Ebel | Director | 14 Jun 2006 | 1 Dec 2014 | British | 82 years |
| Brian James Hallett | Secretary | 1 Jan 2016 | 6 Jun 2016 | - | - |
| Brian James Hallett | Director | 8 Aug 1996 | 1 Dec 2014 | British | 72 years |
| Brian James Hallett | Secretary | 17 Aug 1992 | 1 Dec 2014 | British | - |
| Derek Lucie-smith | Director | 9 Oct 2008 | 25 Apr 2014 | British | 79 years |
| Duncan James Langlands Abbot | Secretary | 1 Dec 2014 | 31 Dec 2015 | - | - |
| Duncan James Langlands Abbot | Director | 1 Dec 2014 | 31 Dec 2015 | British | 71 years |
| Gareth Davis | Director | 1 Oct 2019 | 19 Dec 2023 | British | 76 years |
| John Anthony Crosbie Lorimer | Director | 9 Oct 2008 | 1 Dec 2014 | British | 71 years |
| John Anthony Victor Townsend | Director | 1 Dec 2014 | 19 Dec 2023 | British | 78 years |
| John-paul Preston | Secretary | 6 Jun 2016 | 30 Jun 2019 | - | - |
| Michael Charles Phillips | Director | 1 Dec 2014 | 31 Dec 2016 | British | 64 years |
| Nicholas James Rowe | Director | 17 Aug 1992 | 13 Jun 2006 | English | 72 years |
| Nicholas James Rowe | Director | 14 Jun 2006 | 9 Oct 2008 | English | 72 years |
| Peter Geoffrey Moon | Director | 1 Dec 2014 | 31 Dec 2017 | British | 77 years |
| Rachel Anne Beagles | Director | 1 Mar 2018 | 19 Dec 2023 | British | 58 years |
| Richard Andrew Chadwick | Director | 17 Jun 2008 | 12 May 2022 | British | 75 years |
| Richard Ernest Lane | Director | 28 Jun 2004 | 9 Oct 2008 | British | 83 years |
| Rosemary Helen Chopin-john | Director | 9 Oct 2008 | 31 Jul 2014 | British | 81 years |
| Sarah Lucy Ing | Director | 15 Sept 2021 | 19 Dec 2023 | British | 60 years |
| Simon Leslie Stilwell | Director | 18 Dec 2017 | 19 Dec 2023 | British | 58 years |
| Stephen Carl Ackerman | Director | 21 Jun 2010 | 19 May 2011 | British | 52 years |
| Thomas Jeremy Rowe | Director | 17 Aug 1992 | 13 Jun 2006 | English | 74 years |
| Thomas Jeremy Rowe | Director | 14 Jun 2006 | 9 Oct 2008 | English | 74 years |