| HARDING, Jennifer Marie ACTIVE | Secretary | 20 Jul 2022 | | | | Shottesbrooke Park, Maidenhead, Berkshire, SL6 3SW |
| KEAY, Anna Julia, Dr ACTIVE | Director | 21 Jan 2013 | | United Kingdom | August 1974 | Shottesbrooke Park, Maidenhead, Berkshire, SL6 3SW |
| LEIBOWITZ, Alan Jay ACTIVE | Director | 27 Jun 2024 | | England | August 1952 | Shottesbrooke Park, Maidenhead, Berkshire, SL6 3SW |
| PORRITT, Sarah Elizabeth ACTIVE | Director | 01 Dec 2020 | | England | January 1953 | Shottesbrooke Park, Maidenhead, Berkshire, SL6 3SW |
| SMITH, Bartholomew Evan Eric ACTIVE | Director | | | England | February 1955 | Garden House, Cornwall Gardens, London, SW7 4BQ |
| PEARCE, Peter Huxley RESIGNED | Secretary | 16 Mar 1998 | 21 Mar 2012 | | | Spindletree Cottage Ewhurst Road, Cranleigh, Surrey, GU6 7EF |
| STANBURY, Victoria Paula RESIGNED | Secretary | 07 Nov 2019 | 20 Jul 2022 | | | Shottesbrooke Park, Maidenhead, Berkshire, SL6 3SW |
| TREAVETT, Michael Fred RESIGNED | Secretary | 18 Apr 1997 | 13 Mar 1998 | | | 128c Westwood Road, Tilehurst, Reading, RG31 5PZ |
| TUBB, Michael Wilfrid RESIGNED | Secretary | | 18 Apr 1997 | | | 42 Donaldson Way, Woodley, Reading, RG5 4XL |
| WILKINSON, Sheila Mary RESIGNED | Secretary | 10 Apr 2012 | 07 Nov 2019 | | | Shottesbrooke Park, Maidenhead, Berkshire, SL6 3SW |
| COOKSON, Hugh Richard RESIGNED | Director | 18 Jul 2008 | 16 Jun 2011 | United Kingdom | April 1954 | Manor House, Stratford Tony, Salisbury, Wilts, SP5 4AT |
| DRURY, Martin RESIGNED | Director | 16 Oct 2006 | 24 Nov 2011 | England | April 1938 | 3 Victoria Rise, London, SW4 0PB |
| DRURY, Martin RESIGNED | Director | 07 Mar 1994 | 18 Apr 1997 | England | April 1938 | 3 Victoria Rise, London, SW4 0PB |
| EVANS, Robin Edward Rowlinson RESIGNED | Director | | 21 Jul 1995 | | March 1954 | The Shielings, Moat Lane, Prestwood, Buckinghamshire, HP16 9DF |
| MENDOZA, Neil Francis Jeremy RESIGNED | Director | 16 Jun 2011 | 18 Sep 2020 | England | November 1959 | Shottesbrooke Park, Maidenhead, Berkshire, SL6 3SW |
| SMITH, Christian Margaret, Lady RESIGNED | Director | | 30 Jul 2006 | United Kingdom | October 1927 | Shottesbrooke Park, Maidenhead, Berkshire, SL6 3SW |