| Alan Tapnack | Director | 16 Jun 1993 | 22 Aug 2016 | British | 79 years |
| Allan Maurice James | Director | 31 Jul 1991 | 6 Jan 1997 | British | 77 years |
| Anthony Colin Wakelin | Director | 21 Mar 1991 | 15 Mar 1992 | British | 89 years |
| Christopher Stephen Heyworth | Director | 23 Jun 2016 | 30 May 2018 | British | 44 years |
| Ian Robert Wohlman | Director | 16 Jun 1993 | 19 Aug 2021 | British | 72 years |
| John Charles Wray | Director | 21 Mar 1991 | 31 Jul 1991 | British | 86 years |
| John David Rhodes Margarson | Director | 31 Jul 1991 | 15 Jun 1993 | British | 77 years |
| John David Rhodes Margarson | Secretary | 21 Mar 1991 | 15 Jun 1993 | British | - |
| Philippa Jane Littleton Brown | Secretary | 16 Jun 1993 | 23 Sept 1994 | British | - |
| Richard John Vardy | Secretary | 25 Jun 1996 | 8 Mar 2002 | British | - |
| Susan Christine Richings | Secretary | 16 Jun 1993 | 25 Jun 1996 | British | - |
| Timothy Robert Chanter | Director | 9 Dec 2010 | 16 Jun 2016 | British | 70 years |