| COSEC 2000 LIMITED ACTIVE | Secretary | 06 Feb 2001 | | | | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| BOYD, Alistair Patrick ACTIVE | Director | 25 Apr 2017 | | United Kingdom | February 1979 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| CLARKE, Dean Leonard ACTIVE | Director | 25 Sep 2024 | | England | February 1969 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| MUGASHU, Gardner ACTIVE | Director | 08 Jul 2019 | | United Kingdom | October 1973 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| CONWAY, Michael David RESIGNED | Secretary | 31 Jul 1994 | 23 May 1997 | | | 29 Tomswood Road, Chigwell, Essex, IG7 5QR |
| DAWE, Anthony Peter RESIGNED | Secretary | | 31 Jul 1994 | | | 64 Grosvenor Road, Langley Vale, Epsom Downs, Surrey, KT18 6JB |
| HILL, John Lawrence RESIGNED | Secretary | 24 May 1999 | 06 Feb 2001 | | | Bramley Farm House, Romford Road Pembury, Tunbridge Wells, Kent, TN2 4BA |
| JENNINGS, John Edgar RESIGNED | Secretary | 23 May 1997 | 05 May 1999 | | | Mead House 7 Meadway, Gidea Park, Romford, Essex, RM2 5NU |
| COSEC 2000 LIMITED RESIGNED | Secretary | 05 May 1999 | 24 May 1999 | | | 8 Devonshire Square, London, EC2M 4PL |
| ALLEN, Anthony Simon Echalaz RESIGNED | Director | 04 Jul 2012 | 28 Feb 2014 | United Kingdom | January 1957 | 8, Devonshire Square, London, EC2M 4PL, England |
| ASHER, Christopher Lee RESIGNED | Director | 25 Apr 2017 | 21 Sep 2018 | United Kingdom | June 1980 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| BEGLEY, John Patrick RESIGNED | Director | 12 Apr 2006 | 12 Jun 2009 | | August 1957 | 8 Devonshire Square, London, EC2M 4PL |
| BOVINGDON, Nigel Bernard RESIGNED | Director | | 14 May 2003 | | April 1948 | Ravenhead, Ingarsby, Leicestershire, LE7 9JD |
| CLAYDEN, Paul Francis RESIGNED | Director | 12 Jun 2009 | 21 Sep 2012 | United Kingdom | March 1969 | 8, Devonshire Square, London, EC2M 4PL |
| CRUTTWELL, Edward Robert Charles RESIGNED | Director | 31 Dec 2000 | 01 Jun 2010 | | January 1954 | 8, Devonshire Square, London, EC2M 4PL |
| DAVIDSON, Peter Anthony Thomas RESIGNED | Director | | 30 Nov 1994 | United Kingdom | September 1938 | Harlings Farm, Lake Street, Mark Cross, East Sussex, TN6 3NT |
| DAVIES, Howard Courtney RESIGNED | Director | | 30 Jun 1996 | | October 1946 | 24 Wallace Street, Greenwich 2065, New South Wales, Australia, FOREIGN |
| FISHER, Yvonne Jane RESIGNED | Director | 01 Jun 2010 | 09 Aug 2011 | England | June 1969 | 8, Devonshire Square, London, EC2M 4PL, England |
| FORREST, Ronald William RESIGNED | Director | 25 May 1994 | 01 Mar 2001 | United Kingdom | June 1942 | 18 Ladywood Road, Sutton Coldfield, West Midlands, B74 2SW |
| GALE, Stephen Dudley RESIGNED | Director | 01 Jun 2010 | 30 Apr 2014 | United Kingdom | September 1975 | 8, Devonshire Square, London, EC2M 4PL |
| GREENBOROUGH, John Hedley, Sir RESIGNED | Director | | 31 Dec 1991 | | July 1922 | 30 Burghley House, London, SW19 5JB |
| GRIFFITH, Gary RESIGNED | Director | | 31 Jan 1995 | | March 1946 | 136 Far Reach Road, Westwood, Massachusetts 02090, FOREIGN, Usa |
| HANSON, Philip Leighton RESIGNED | Director | 26 Feb 2014 | 15 Apr 2016 | England | January 1977 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| HEAP, Michael Conrad RESIGNED | Director | 12 Jun 2009 | 19 Mar 2010 | | June 1969 | 8, Devonshire Square, London, EC2M 4PL |
| HILL, John Lawrence RESIGNED | Director | 31 Dec 2000 | 31 Dec 2005 | | June 1949 | 8 Devonshire Square, London, EC2M 4PL |
| HOGWOOD, Paul Arthur RESIGNED | Director | 09 Aug 2011 | 28 Jun 2019 | United Kingdom | July 1949 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| HOPE, Duncan Patrick Nicholson RESIGNED | Director | 12 Apr 2006 | 30 Mar 2007 | | June 1964 | 8 Devonshire Square, London, EC2M 4PL |
| HOWLAND JACKSON, Anthony Geoffrey Clive RESIGNED | Director | | 31 Dec 2000 | Uk | May 1941 | Little Loveney Hall, Wakes Colne, Colchester, Essex, CO6 2BH |
| JEWKES, Gordon Wesley, Sir RESIGNED | Director | 01 Jan 1992 | 31 Aug 1994 | | November 1931 | Clandon Cottage, East Brabourne, Ashford, Kent, TN25 5LP |
| KATSAOUNI-DODD, Pelagia RESIGNED | Director | 15 Nov 2021 | 09 May 2024 | United Kingdom | February 1979 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| KELLER, Charles Edgar RESIGNED | Director | | 01 Jun 1993 | | May 1927 | 186 Meadowbrook Road, Weston, Massachusetts 02193, FOREIGN, Usa |
| LEDGER, David George RESIGNED | Director | 26 Feb 2014 | 28 Mar 2018 | England | April 1957 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| MARSHALL, Ian RESIGNED | Director | 25 Jul 1996 | 14 Jan 1998 | | May 1947 | 43 Belsize Road, London, NW6 4RX |
| MCCLURE FISHER, David Anthony RESIGNED | Director | | 30 Jun 1995 | | March 1939 | Shelleys, Tag Lane, Hare Hatch, Berkshire, RG10 9ST |
| MINOPRIO, Stephen James Calder RESIGNED | Director | | 30 Apr 1996 | United Kingdom | November 1940 | Copinger Hall, Buxhall, Suffolk, IP14 3DJ |
| ORAM, William John RESIGNED | Director | 28 Apr 2004 | 12 Jun 2009 | United Kingdom | May 1953 | 8 Devonshire Square, London, EC4M 2PL |
| RADCLIFFE, Julian Guy Yonge RESIGNED | Director | | 30 Jun 1999 | England | August 1948 | 32 Brynmaer Road, Battersea, London, SW11 4EW |
| SAWDY, Peter Bryan RESIGNED | Director | | 31 Aug 1994 | | September 1931 | 20 Smith Terrace, London, SW3 4DL |
| SHAW, Alec RESIGNED | Director | | 26 Jul 1996 | | April 1934 | 21 Warren Drive, Dorridge, Solihull, West Midlands, B93 8JY |
| SNOW, Antony Edmund RESIGNED | Director | | 31 Aug 1994 | England | December 1932 | Fyfield Hill Barn, Fyfield Hill Barn, Marlborough, Wiltshire, SN8 1PU |
| UZIELLI, William John RESIGNED | Director | | 31 Dec 1994 | | March 1937 | Buckhurst Park Cottage, Buckhurst Road, Ascot, Berkshire, SL5 7QE |
| VAUGHN, James Hurd RESIGNED | Director | | 24 Jul 1996 | | April 1927 | Flat 8, 76/78 Onslow Gardens, London, SW7 3QB |
| VICKERS, Alexander Michael RESIGNED | Director | 08 Jul 2019 | 15 Nov 2021 | United Kingdom | January 1983 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| WALL, David Neil RESIGNED | Director | 31 Dec 2000 | 28 Apr 2004 | | September 1954 | 8 Devonshire Square, London, EC2M 4PL |
| WILLIAMS, Christine Marie RESIGNED | Director | 26 Feb 2014 | 25 Apr 2017 | United Kingdom | September 1974 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |