| DE KLERK, Jason ACTIVE | Director | 09 May 2005 | | England | June 1974 | 69, Cowper Road, Harpenden, AL5 5NJ, England |
| DUNCOMBE, Peter William Pigott ACTIVE | Director | 24 Jun 2025 | | England | December 1965 | 69, Cowper Road, Harpenden, Hertfordshire, AL5 5NJ, England |
| SHAH, Sinesh Ramesh ACTIVE | Director | 02 Dec 2018 | | United Kingdom | June 1977 | 6, Fairway Close, Harpenden, AL5 2NN, England |
| WILCOX, Ross Joel ACTIVE | Director | 02 Apr 2023 | | England | February 1989 | 69, Cowper Road, Harpenden, Hertfordshire, AL5 5NJ, England |
| ADDISCOTT, Thomas, Professor RESIGNED | Secretary | 08 Oct 1999 | 26 Jul 2004 | | | 20 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| FELLOWS-SMITH, Jonathan Payn RESIGNED | Secretary | 05 Jul 1996 | 08 Oct 1999 | | | 12 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| GRIFFITHS, Valerie Constance RESIGNED | Secretary | | 16 Aug 1992 | | | 12 Albany Court, Harpenden, Hertfordshire, AL5 5LU |
| NORMAN, Kate RESIGNED | Secretary | 26 Jul 2004 | 06 Oct 2005 | | | 1 Marquis Lane, Harpenden, Hertfordshire, AL5 5AA |
| SHARP, Angela Margaret RESIGNED | Secretary | 24 Nov 1992 | 06 Nov 1995 | | | 18 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| SMITH, Brenda Joyce RESIGNED | Secretary | 06 Oct 2005 | 08 Apr 2013 | | | 6, Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| SWAINSON, Neil Andrew RESIGNED | Secretary | 08 Apr 2013 | 14 Feb 2017 | | | 18, Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU, England |
| WARDLEY, Sarah Katherine RESIGNED | Secretary | 14 Feb 2017 | 18 Aug 2020 | | | 69, Cowper Road, Harpenden, Hertfordshire, AL5 5NJ, England |
| ADDISCOTT, Thomas, Professor RESIGNED | Director | 06 Nov 1995 | 08 Apr 2013 | United Kingdom | June 1942 | 20 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| ANDERSON, James RESIGNED | Director | 24 Nov 1992 | 01 Jul 1994 | | September 1941 | 23 Berens Road, Shrivenham, Swindon, Wiltshire, SN6 8EG |
| BAXTER, Philip RESIGNED | Director | 02 Jul 2013 | 31 Mar 2016 | Great Britain | May 1978 | 12, Albany Court, Milton Road, Harpenden, Herts, AL5 5LU, Great Britain |
| DENHAM, William RESIGNED | Director | | 13 Sep 1991 | | September 1908 | 15 Albany Court, Harpenden, Hertfordshire, AL5 5LU |
| FELLOWS-SMITH, Jonathan Payn RESIGNED | Director | 06 Nov 1995 | 08 Oct 1999 | | February 1932 | 12 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| GRIFFITHS, Valerie Constance RESIGNED | Director | | 16 Aug 1992 | | September 1940 | 12 Albany Court, Harpenden, Hertfordshire, AL5 5LU |
| GUHRAUER, Hella Margaret RESIGNED | Director | | 24 Nov 1992 | | May 1913 | 10 Albany Court, Milton Road, Harpenden, Herts, AL5 5LU |
| LAWRENCE, Joyce RESIGNED | Director | | 11 Apr 2000 | | July 1917 | 5 Albany Court, Harpenden, Hertfordshire, AL5 5LU |
| LAWSON, Alastair John RESIGNED | Director | 22 Nov 1996 | 26 Jul 2004 | | November 1969 | 21 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| LONGDON, Ray RESIGNED | Director | 26 Jul 2004 | 24 Jul 2012 | United Kingdom | September 1972 | 12 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| MALAN, Andre Charles RESIGNED | Director | 02 Jul 2013 | 09 Feb 2018 | United Kingdom | October 1967 | 7, Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU, England |
| MARE, Daphne RESIGNED | Director | | 18 Apr 2000 | | May 1921 | 6 Albany Court, Harpenden, Hertfordshire, AL5 5LU |
| NORMAN, Katharine Rebecca RESIGNED | Director | 06 Feb 2001 | 06 Oct 2005 | | January 1970 | 1 Marquis Lane, Harpenden, Hertfordshire, AL5 5AA |
| PATRICK, Joanna Mary RESIGNED | Director | 13 Sep 1991 | 26 Aug 1992 | | February 1956 | 21 Albany Court, Harpenden, Hertfordshire, AL5 5LU |
| PEASE, Anita Louise RESIGNED | Director | 21 May 2002 | 08 Aug 2005 | | August 1965 | 9 Leycroft Way, Harpenden, Hertfordshire, AL5 1JW |
| SHARP, William Graham Christie RESIGNED | Director | | 10 Nov 1996 | | June 1946 | 18 Albany Court, Harpenden, Hertfordshire, AL5 5LU |
| SMITH, Brenda Joyce RESIGNED | Director | 06 Oct 2005 | 16 Jan 2019 | United Kingdom | November 1950 | 6, Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| SNELL, John RESIGNED | Director | 22 Nov 1996 | 10 Jul 2001 | | December 1929 | 8 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| SWAINSON, Neil Andrew RESIGNED | Director | 01 Oct 1999 | 14 Feb 2017 | England | April 1958 | 18 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| TAFFS, Andrew Stephen Leslie RESIGNED | Director | 07 Mar 2001 | 23 May 2011 | United Kingdom | June 1964 | 17 Albany Court, Milton Road, Harpenden, Hertfordshire, AL5 5LU |
| VANN, Margaret Mary RESIGNED | Director | 13 Sep 1991 | 23 Jun 2001 | | May 1926 | 11 Albany Court, Harpenden, Hertfordshire, AL5 5LU |
| WARDLEY, Sarah Katherine Lucy RESIGNED | Director | 01 Mar 2015 | 18 Aug 2020 | United Kingdom | August 1958 | 90, Topstreet Way, Harpenden, Hertfordshire, AL5 5TS, England |