| LEONARD, Alison Louise ACTIVE | Director | 05 Jul 2023 | | England | June 1976 | Quantum, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY |
| YATES, Daniel S ACTIVE | Director | 07 Jun 2024 | | United States | June 1980 | Quantum, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY |
| BOWERS, Richard Edward RESIGNED | Secretary | 01 Nov 2005 | 31 Mar 2010 | | | 31, Turners Avenue, Fleet, Hampshire, GU51 1DU, United Kingdom |
| BOWERS, Richard Edward RESIGNED | Secretary | 29 Mar 2002 | 04 Feb 2005 | | | 12 Herbs End, Farnborough, Hampshire, GU14 9YD |
| CARROLL, Helen RESIGNED | Secretary | 03 Jul 2000 | 29 Mar 2002 | | | 4 Lonsdale Road, London, SW13 9EB |
| CLARKE, David Newcombe RESIGNED | Secretary | | 31 Jan 1996 | | | 11 Spinney Rise, Daventry, Northamptonshire, NN11 4DL |
| COSTELLO JR, Thomas Michael RESIGNED | Secretary | 27 Jun 1996 | 27 Jun 1996 | | | 1032 Kensington Road, Grosse Point Park, Michigan 48230, America |
| JOBSON, Stephen RESIGNED | Secretary | 28 Apr 2000 | 03 Jul 2000 | | | Ashland, Grange Gardens, Farnham Common, Berkshire, SL2 3HL |
| JONES, Francesca RESIGNED | Secretary | 19 Aug 2016 | 05 Jul 2023 | | | Quantum, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY |
| MILNE HOME, Sheridan Rebecca RESIGNED | Secretary | 31 Mar 2010 | 19 Aug 2016 | | | Quantum, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY |
| MILNE HOME, Sheridan Rebecca RESIGNED | Secretary | 09 Sep 2005 | 01 Nov 2005 | | | 84 Church Street, Chesham, Buckinghamshire, HP5 1JD |
| MILNE HOME, Sheridan Rebecca RESIGNED | Secretary | 04 Feb 2005 | 19 May 2005 | | | 84 Church Street, Chesham, Buckinghamshire, HP5 1JD |
| NORTH, Marcus RESIGNED | Secretary | 19 May 2005 | 09 Sep 2005 | | | Haywood House, Haywood Drive, Hemel Hempstead, HP3 0SA |
| STEPHENS, Julie Elizabeth RESIGNED | Secretary | 01 Feb 1996 | 28 Apr 2000 | | | The Oakleaves, 16 Woodridge Close, Bracknell, Berkshire, RG12 9QX |
| AALDERS, Jacob RESIGNED | Director | 13 Jul 1995 | 05 Jul 1996 | | February 1947 | Bartholottilaan 38, 3768 Gd Soest, The Netherlands, FOREIGN, The Netherlands |
| BOWERS, Richard Edward RESIGNED | Director | 30 Mar 2010 | 05 Jul 2023 | England | August 1973 | Quantum, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY |
| BUGGE, Kjell Kristian RESIGNED | Director | | 11 Aug 1992 | | December 1943 | Stre Vei 82, 1315 Neseya, FOREIGN, Norway |
| CAPONIGRO, Ralph RESIGNED | Director | 27 Jun 1996 | 01 Apr 1998 | | May 1932 | 644 Bennington Drive, Bloomfield Hills Michigan 48304, Usa, FOREIGN |
| CARROLL, Helen RESIGNED | Director | 03 Jul 2000 | 29 Mar 2002 | | August 1967 | 4 Lonsdale Road, London, SW13 9EB |
| CHISEM, David Michael RESIGNED | Director | 20 Nov 1992 | 01 Mar 1996 | | November 1949 | Rivendell End Farm House, Seymour Court Lane, Marlow, Buckinghamshire, SL7 3DD |
| CLARKE, David Newcombe RESIGNED | Director | | 30 Jun 1996 | England | December 1949 | 11 Spinney Rise, Daventry, Northamptonshire, NN11 4DL |
| COSTELLO JR, Thomas Michael RESIGNED | Director | 27 Jun 1996 | 07 Mar 2008 | | September 1953 | 1032 Kensington Road, Grosse Point Park, Michigan 48230, America |
| DAWSON, Irene RESIGNED | Director | 31 May 2000 | 31 May 2008 | | April 1952 | The Firs 34 Broad Lane, Evenley, Brackley, Northamptonshire, NN13 5SF |
| ERMANNI, John Dean RESIGNED | Director | 01 Jun 2013 | 31 Dec 2014 | Usa | November 1961 | Quantum, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY |
| ESCHER, Sandra RESIGNED | Director | 21 Oct 2022 | 07 Jun 2024 | United States | December 1959 | 1601, Trapelo Rd, Ste 116, Waltham, Massachusetts, 02451, United States |
| FAGAN, Stephen RESIGNED | Director | | 21 Sep 2001 | | August 1954 | The Old Rectory, Higham Gobion, Hitchin, Hertfordshire, S65 3HR |
| FOLLIS, Daniel Scobie RESIGNED | Director | 07 Mar 2008 | 28 Feb 2015 | Usa | February 1966 | 1246 Kensington, Gross Point Park, Michigan Mi 48230, Usa |
| FOURNIER, Laura RESIGNED | Director | 01 Apr 1998 | 01 Jun 2013 | Usa | August 1952 | 314 Huntington Street, Mt Clemens Michigan 48043 Macomb, Usa, FOREIGN |
| HUGHES, Edward RESIGNED | Director | 01 Apr 1997 | 08 Apr 1997 | | November 1951 | 784 Keizersgracht, Amsterdam, EC 1017, Holland |
| JALLOS, Henry RESIGNED | Director | 27 Jun 1996 | 28 Apr 2000 | | November 1948 | 505 Mckinley, Plymouth Michigan 48170, Usa |
| JOBSON, Stephen RESIGNED | Director | 20 Apr 2006 | 01 Apr 2009 | | October 1963 | Ashland, Grange Gardens, Farnham Common, Berkshire, SL2 3HL |
| JOBSON, Stephen RESIGNED | Director | 01 Nov 1998 | 20 Oct 2003 | | October 1963 | Ashland, Grange Gardens, Farnham Common, Berkshire, SL2 3HL |
| JOHNSON, Robert RESIGNED | Director | 19 Aug 2016 | 13 Oct 2017 | Usa | January 1963 | Quantum, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY |
| LEACH, Julian Thomas RESIGNED | Director | 02 Apr 1997 | 31 Mar 1999 | | January 1958 | 28 Gartmoor Gardens, Southfields, London, SW19 0NY |
| NAGPAUL, Rakesh RESIGNED | Director | 20 Apr 2006 | 31 Mar 2010 | England | September 1952 | Carters Hill Barn, Carters Hill Lane, Arborfield, Berks, RG2 9JJ |
| NAGPAUL, Rakesh RESIGNED | Director | 01 Feb 1996 | 29 Mar 2002 | | September 1952 | 10 Cutbush Close, Lower Earley, Reading, Berks, RG6 4XA |
| NATHAN, Joseph RESIGNED | Director | | 24 Sep 1998 | | November 1952 | 4783 River Chase Drive, Troy, Michigan, FOREIGN, Usa |
| NEWFIELD, Craig RESIGNED | Director | 08 Nov 2017 | 21 Oct 2022 | United States | August 1959 | Quantum, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY |
| SLEITER, Ronald Duane RESIGNED | Director | 28 Apr 2000 | 10 Oct 2001 | | August 1946 | 4645 Xene Lane N, Plymouth, Minnesota, SS446, Usa |
| SOLBERG, Peter Christian RESIGNED | Director | | 11 Aug 1992 | | April 1939 | Hasselbakken 8, 1343 Eiksmarka, FOREIGN, Norway |
| STEPHENS, Julie Elizabeth RESIGNED | Director | 01 Apr 1995 | 31 May 2000 | United Kingdom | January 1960 | The Oakleaves, 16 Woodridge Close, Bracknell, Berkshire, RG12 9QX |
| TRAPANI, Nick Leonard RESIGNED | Director | | 31 Jan 1996 | | February 1939 | 31440 Northwestern Highway, Farmington Hills, Michigan M 148334, FOREIGN, Usa |
| VAN SICLEN, John Wallace RESIGNED | Director | 31 Dec 2014 | 19 Aug 2016 | Usa | July 1956 | Quantum, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY |
| WEST, Amina RESIGNED | Director | 20 Oct 2003 | 20 Apr 2006 | | April 1963 | 12 Highlands, Farnham Common, Berkshire, SL2 3JR |
| WILLIAMS, Graham Stuart RESIGNED | Director | 13 Jul 1995 | 30 Sep 1996 | | December 1954 | Hueseplein 11, 1185 Hh, Amstelveen, The Netherlands |