| ALSOP, Patricia Mary RESIGNED | Secretary | 27 May 1993 | 25 Mar 2003 | | | 32 Nicosia Road, London, SW18 3RN |
| BRYAN, Paul Anthony Edward Peter RESIGNED | Secretary | 25 Mar 2003 | 31 Dec 2004 | | | 37 Chantry Avenue, Hartley, Longfield, Kent, DA3 8DD |
| CASH, Daphne Valerie RESIGNED | Secretary | 19 Sep 2006 | 29 Aug 2008 | | | 9 Marquis Close, Harpenden, Hertfordshire, AL5 5QZ |
| FOGG, Amanda Claire RESIGNED | Secretary | 04 Sep 2013 | 16 Feb 2021 | | | 32-38, Scrutton Street, London, EC2A 4RQ, England |
| HEARD, Nicholas James RESIGNED | Secretary | 29 Aug 2008 | 31 Dec 2010 | | | 46 Colebrooke Row, London, N1 8AF |
| JOHNSON, Ian Paul RESIGNED | Secretary | 31 Dec 2004 | 19 Sep 2006 | | | Tugwood, Kings Lane, Cookham Dean, Berkshire, SL6 9TZ |
| SYKES, Richard John Davies RESIGNED | Secretary | | 27 May 1993 | | | 8 Oughton Close, Yarm, Cleveland, TS15 9SZ |
| WARBURTON, Jenny RESIGNED | Secretary | 01 Jan 2011 | 14 Oct 2011 | | | 46 Colebrooke Row, London, N1 8AF |
| WATT, Philip Graham RESIGNED | Secretary | 15 Oct 2011 | 03 Sep 2013 | | | 46 Colebrooke Row, London, N1 8AF |
| ALLEN, Paul Christopher RESIGNED | Director | 10 Jan 2003 | 31 Dec 2012 | England | May 1964 | 46 Colebrooke Row, London, N1 8AF |
| ALSOP, Patricia Mary RESIGNED | Director | 31 Dec 1998 | 25 Mar 2003 | | April 1956 | 32 Nicosia Road, London, SW18 3RN |
| BENNETT, Joanne Clare RESIGNED | Director | 01 Feb 2014 | 23 Apr 2015 | England | September 1976 | 46 Colebrooke Row, London, N1 8AF |
| BRYAN, Paul Anthony Edward Peter RESIGNED | Director | 25 Mar 2003 | 31 Dec 2004 | | April 1950 | 37 Chantry Avenue, Hartley, Longfield, Kent, DA3 8DD |
| CASH, Daphne Valerie RESIGNED | Director | 19 Sep 2006 | 29 Aug 2008 | | August 1959 | 9 Marquis Close, Harpenden, Hertfordshire, AL5 5QZ |
| CHADWICK, Allan RESIGNED | Director | 28 Jun 1995 | 01 Aug 1998 | England | August 1939 | 32 Chamberlain Way, Pinner, Middlesex, HA5 2AX |
| DAVIES, Tim Morgan RESIGNED | Director | 23 Apr 2015 | 08 Apr 2016 | United Kingdom | September 1971 | 46 Colebrooke Row, London, N1 8AF |
| FABIAN, Andrew Mark RESIGNED | Director | 01 Nov 1998 | 30 Apr 2000 | United Kingdom | December 1961 | 139 Woodwarde Road, London, SE22 8UP |
| FINCH, Russell RESIGNED | Director | 30 Apr 2000 | 30 Apr 2002 | | February 1966 | 9 Park Place, London, W5 5NQ |
| HANN, James, Sir RESIGNED | Director | | 29 Sep 1995 | | January 1933 | Bramley Cottage Bullhouse Lane, Wrington, Bristol, North Somerset, BS40 5NY |
| HYNES, Brendan RESIGNED | Director | 04 Sep 2000 | 31 Mar 2001 | England | August 1960 | Elm Lodge Stoneyhurst Crescent, Culcheth, Warrington, Cheshire, WA3 4DS |
| JOHNSON, Ian Paul RESIGNED | Director | 23 Feb 2004 | 31 Jan 2014 | United Kingdom | May 1960 | 46 Colebrooke Row, London, N1 8AF |
| KEMPSTER, Jonathan RESIGNED | Director | 01 Aug 1998 | 01 Nov 1998 | | January 1963 | 144 Finchampstead Road, Wokingham, Berkshire, RG41 2NU |
| MENZIES, John Webster RESIGNED | Director | | 30 Jul 1993 | | May 1945 | 12 Church Street, Dunnington, York, North Yorkshire, YO19 5PW |
| MEREDITH, Malcolm Leslie RESIGNED | Director | | 30 Apr 1993 | | January 1956 | 8 Hylton Road, Hartlepool, Cleveland, TS26 0AG |
| MILLS-BAKER, Andrew James RESIGNED | Director | | 31 Mar 1995 | United Kingdom | November 1949 | 8 The Warren, Harpenden, Hertfordshire, AL5 2NH |
| MORRIS, Sarah RESIGNED | Director | 01 Jan 2013 | 22 Apr 2013 | England | October 1964 | 46 Colebrooke Row, London, N1 8AF |
| PARR, Thomas Donald RESIGNED | Director | | 31 Dec 1998 | | September 1930 | Homestead Homestead Road, Disley, Stockport, Cheshire, SK12 2JP |
| PARSONS, John Victor RESIGNED | Director | | 30 Apr 1993 | | January 1934 | Whashton Lodge, Whashton, Richmond, North Yorkshire, DL11 7JL |
| REID, William RESIGNED | Director | 10 Jan 2003 | 03 Apr 2003 | | November 1937 | Baykers Lamb Lane, Sible Hedingham, Halstead, Essex, CO9 3RS |
| ROBERTS, Stephen John RESIGNED | Director | 27 Mar 2002 | 26 Nov 2003 | United Kingdom | January 1953 | 11 Warden Court, Cuckfield, Haywards Heath, West Sussex, RH17 5DN |
| TIDEMAN, Teresa Mary RESIGNED | Director | 23 Apr 2013 | 23 Apr 2015 | England | February 1960 | 46 Colebrooke Row, London, N1 8AF |
| VAUGHAN, Bernard James RESIGNED | Director | | 14 Jul 1994 | | August 1931 | 6 Kelsterne Close, Yarm, Cleveland, TS15 9SX |
| WILLS, Shaun Simon RESIGNED | Director | 23 Apr 2015 | 16 Feb 2021 | England | February 1972 | 32-38, Scrutton Street, London, EC2A 4RQ, England |
| WRIGHT, James Leslie RESIGNED | Director | | 30 Apr 1993 | | February 1948 | 3 Village Farm, Middleton Tyas, Richmond, North Yorkshire, DL10 6SQ |