| CONNELL, Kirstin Maura Mackenzie ACTIVE | Director | 05 Feb 2019 | | England | September 1967 | Farnborough Business Park, 1 Pinehurst Road, Farnborough, Hampshire, GU14 7BF, United Kingdom |
| MACDONALD, Alistair John ACTIVE | Director | 31 Mar 2013 | | England | February 1970 | Farnborough Business Park, 1 Pinehurst Road, Farnborough, Hampshire, GU14 7BF, United Kingdom |
| SINGH, Nyla Natalie Donna Maria ACTIVE | Director | 05 Feb 2019 | | United Kingdom | January 1963 | Farnborough Business Park, 1 Pinehurst Road, Farnborough, Hampshire, GU14 7BF, United Kingdom |
| COWAN, Desmond Joseph Paul Edward RESIGNED | Secretary | 16 Apr 2004 | 20 Oct 2004 | | | 52 Leith Walk, Edinburgh, Midlothian, EH6 5HW |
| FRENCH, Charlotte Ann RESIGNED | Secretary | 01 Jun 1993 | 30 Sep 1993 | | | Hudson Cottage, Howsham, York, North Yorkshire, YO6 7PH |
| HARRISON, Leigh Gordon RESIGNED | Secretary | 01 Mar 2001 | 26 Jul 2002 | | | Peak House, The Ridge, Cold Ash, Thatcham, Berkshire, RG18 9HZ |
| JOHST, David P RESIGNED | Secretary | 20 Oct 2004 | 16 Aug 2006 | | | 7 Meadow View Lane, Andover, Massachusetts 01810, U S A |
| JONES, Angela Margaret RESIGNED | Secretary | 12 Oct 2000 | 08 Dec 2000 | | | The Beren Hatchgate Farm, Cockpole Green Wargrave, Reading, Berkshire, RG10 8NE |
| LESLIE, Stewart Gordon RESIGNED | Secretary | 26 Jul 2002 | 16 Apr 2004 | | | 11 Walker Street, Edinburgh, Midlothian, EH3 7NE |
| MOORE, Douglas Frank RESIGNED | Secretary | | 01 Jun 1993 | | | Welham Hall, Welham, Malton, North Yorkshire, YO17 9QF |
| SAYERS, James Christopher RESIGNED | Secretary | 01 Oct 1993 | 15 May 1997 | | | 5 Whitchurch Close, Maidenhead, Berkshire, SL6 7TZ |
| SHAW, William Lawson, Dr RESIGNED | Secretary | 08 Aug 2000 | 28 Feb 2001 | | | 2 Autumn Walk, Maidenhead, Berkshire, SL6 4ND |
| SINGH, Nyla Natalie Donna Maria RESIGNED | Secretary | 31 Mar 2013 | 05 Feb 2019 | | | Farnborough Business Park, 1 Pinehurst Road, Farnborough, Hampshire, GU14 7BF, United Kingdom |
| SINGH, Nyla Natalie RESIGNED | Secretary | 16 Aug 2006 | 12 Jul 2011 | | | Riverview, The Meadows Business Park, Station Approach, Camberley, Surrey, GU17 9AB, United Kingdom |
| WALL, Karen Malinda RESIGNED | Secretary | 12 Jul 2011 | 01 Oct 2012 | | | Riverview, The Meadows Business Park, Station Approach, Camberley, Surrey, GU17 9AB, United Kingdom |
| WILLIAMS, Nigel James, Dr RESIGNED | Secretary | 15 May 1997 | 12 Mar 1999 | | | Slievehamon, Oakleigh Road Hatch End, Pinner, Middlesex, HA5 4HB |
| YENDELL, Timothy Patrick RESIGNED | Secretary | 12 Mar 1999 | 08 Aug 2000 | | | 64 Donnington Gardens, Reading, Berkshire, RG1 5LZ |
| ACKERMAN, Thomas Francis RESIGNED | Director | 20 Oct 2004 | 16 Aug 2006 | American | June 1954 | 11 Athertone Circle, Lynnfield, Massachusetts 01940, U S A |
| BERGEN, Christopher RESIGNED | Director | 16 Aug 2006 | 12 Jul 2011 | Usa | June 1950 | Riverview, The Meadows Business Park, Station Approach, Camberley, Surrey, GU17 9AB, United Kingdom |
| BOYCE, Alan James RESIGNED | Director | 04 Dec 2006 | 20 Feb 2007 | United Kingdom | January 1962 | 35, Cambrian Close, Camberley, Surrey, GU15 3LD |
| BRENKERT III, Karl RESIGNED | Director | 16 Aug 2006 | 06 May 2009 | | January 1948 | 981 Paxton Lake Drive, Loveland, Ohio 45140, Usa |
| CHEESMAN, Keith A RESIGNED | Director | 27 Apr 2009 | 12 Jul 2011 | Usa | March 1959 | Riverview, The Meadows Business Park, Station Approach, Camberley, Surrey, GU17 9AB, United Kingdom |
| COWAN, Desmond Joseph Paul Edward RESIGNED | Director | 23 Jul 2003 | 20 Oct 2004 | | February 1961 | 52 Leith Walk, Edinburgh, Midlothian, EH6 5HW |
| DE WITT, Jan, Dr RESIGNED | Director | 13 Mar 1998 | 10 Dec 1998 | | November 1954 | Charlotte De Bourbonlaan, Zeist, 3708 CD, Holland |
| FOSTER, James Clifford RESIGNED | Director | 20 Oct 2004 | 16 Aug 2006 | | November 1950 | 16 Hancock Road, Weston, Massachusetts 02493, U S A |
| GANLEY, John Leo RESIGNED | Director | | 15 Jun 1991 | | February 1923 | Wedgefield Plantation, Georgetown South Carolina 29440, FOREIGN, Usa |
| GILL, David Neil RESIGNED | Director | 02 Mar 2012 | 12 Aug 2013 | Usa | January 1955 | Riverview, The Meadows Business Park, Station Approach, Camberley, Surrey, GU17 9AB, United Kingdom |
| GOODMAN, Nigel RESIGNED | Director | 01 Jun 1993 | 12 Apr 1994 | | May 1952 | 52 Westover Road, London, SW18 2RH |
| HARRISON, Leigh Gordon RESIGNED | Director | 01 Mar 2001 | 26 Jul 2002 | United Kingdom | February 1959 | Peak House, The Ridge, Cold Ash, Thatcham, Berkshire, RG18 9HZ |
| JOHST, David P RESIGNED | Director | 20 Oct 2004 | 16 Aug 2006 | American | December 1961 | 7 Meadow View Lane, Andover, Massachusetts 01810, U S A |
| JONES, Angela Margaret RESIGNED | Director | 12 Oct 2000 | 08 Dec 2000 | | August 1956 | The Beren Hatchgate Farm, Cockpole Green Wargrave, Reading, Berkshire, RG10 8NE |
| KENDLE, Candace RESIGNED | Director | 16 Aug 2006 | 12 Jul 2011 | Usa | January 1947 | Riverview, The Meadows Business Park, Station Approach, Camberley, Surrey, GU17 9AB, United Kingdom |
| KERKHOF, Glenn Cornelis RESIGNED | Director | 15 Apr 2005 | 16 Aug 2006 | | April 1970 | 16 Charlotte Square, Edinburgh, Midlothian, EH2 4DF |
| KERKHOF, Glenn Cornelis RESIGNED | Director | 06 Aug 2004 | 20 Oct 2004 | | April 1970 | 16 Charlotte Square, Edinburgh, Midlothian, EH2 4DF |
| LESLIE, Stewart Gordon RESIGNED | Director | 26 Jul 2002 | 16 Apr 2004 | | March 1953 | 11 Walker Street, Edinburgh, Midlothian, EH3 7NE |
| LOGAN, Kelvin Barry, Dr RESIGNED | Director | 12 Jul 2011 | 31 Mar 2013 | United Kingdom | June 1952 | Riverview, The Meadows Business Park, Station Approach, Camberley, Surrey, GU17 9AB, United Kingdom |
| MOORE, Douglas Frank RESIGNED | Director | | 01 Jun 1993 | | July 1934 | Welham Hall, Welham, Malton, North Yorkshire, YO17 9QF |
| MOTTERAM, Peter Anthony Stuart RESIGNED | Director | 23 Sep 1996 | 05 Jan 1998 | England | April 1960 | 19 Florence Road, Sanderstead, Surrey, CR2 0PQ |
| NEILL, Colin RESIGNED | Director | 11 Jan 1999 | 30 Jul 2001 | | June 1946 | 460 Springfield Avenue, Westfield, New Jersey, 07090, Usa |
| NIMMO, Walter Sneddon, Dr RESIGNED | Director | 30 Jul 2001 | 20 Oct 2004 | | April 1947 | 46 Millar Crescent, Edinburgh, EH10 5HH, Scotland |
| ONEIL, William Charles RESIGNED | Director | 15 Jun 1991 | 13 Mar 1998 | | May 1934 | 1 Valley Forge Drive, Nashville Tn 37205, FOREIGN, Usa |
| OTTAVIANO, Paul Joseph RESIGNED | Director | 16 Jul 1996 | 13 Mar 1998 | | December 1946 | 201 Tigitsi Place, Loudon 37774 Tennessee, Usa, FOREIGN |
| SHAW, William Lawson, Dr RESIGNED | Director | 05 Jan 1998 | 30 Jul 2001 | | January 1946 | 2 Autumn Walk, Maidenhead, Berkshire, SL6 4ND |
| SIEMENS, Albert John RESIGNED | Director | | 23 Sep 1996 | | December 1943 | 2013 N Lakeshore Drive, Chapel Hill, North Carolina 27514, FOREIGN, Usa |
| SINGH, Nyla Natalie Donna Maria RESIGNED | Director | 14 Jun 2010 | 20 Sep 2010 | United Kingdom | January 1963 | Riverview, The Meadows Business Park, Station Approach, Camberley, Surrey, GU17 9AB, United Kingdom |
| THORNTON, Nicholas John RESIGNED | Director | 30 Jul 2001 | 06 Aug 2004 | | July 1961 | 11 Royal Circus, Edinburgh, EH3 |
| WILLIAMS, Nigel James, Dr RESIGNED | Director | 20 May 1998 | 12 Mar 1999 | | February 1946 | Slievehamon, Oakleigh Road Hatch End, Pinner, Middlesex, HA5 4HB |