| COSEC 2000 LIMITED ACTIVE | Secretary | 17 May 1999 | | | | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| BOYD, Alistair Patrick ACTIVE | Director | 30 Mar 2017 | | United Kingdom | February 1979 | 55, Baker Street, London, W1U 7EU |
| VICKERS, Alexander Michael ACTIVE | Director | 16 Dec 2019 | | United Kingdom | January 1983 | 55, Baker Street, London, W1U 7EU |
| ASPINALL, Nicholas RESIGNED | Secretary | 18 May 1994 | 17 May 1999 | | | 45 Southdean Gardens, Wimbledon, London, SW19 6NT |
| CLIFTON, Alan John RESIGNED | Secretary | | 30 Jun 1993 | | | 30 Welstead Gardens, Westcliff On Sea, Essex, SS0 0AY |
| WILL, Richard Edward RESIGNED | Secretary | 30 Jun 1993 | 18 May 1994 | | | Northlands 27 Lewes Road, Haywards Heath, West Sussex, RH17 7SP |
| AMY, Ronald John RESIGNED | Director | 01 Oct 1998 | 31 Dec 2007 | United Kingdom | June 1950 | 8 Devonshire Square, London, EC2M 4PL |
| ASHER, Christopher Lee RESIGNED | Director | 30 Mar 2017 | 21 Sep 2018 | United Kingdom | June 1980 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| BARRETT, Michael Joseph RESIGNED | Director | 15 Aug 1995 | 31 Jul 1997 | | October 1943 | Grey Poplars 12 Danesbury Park, Bengeo, Hertford, Hertfordshire, SG14 3HX |
| BIRTS, John Donald Watkins RESIGNED | Director | | 16 Jul 1998 | England | February 1936 | The Chantry, Hill Deverill, Warminster, Wilts, BA12 7EQ |
| BLEWETT, Graham John RESIGNED | Director | 12 Jul 1993 | 08 Feb 1996 | | March 1944 | 11 Achnacone Drive, Brainswick, Colchester, Essex, CO4 5AZ |
| BRADLEY, Paul Gerard RESIGNED | Director | 20 Nov 1997 | 31 Mar 2011 | | October 1954 | 8 Devonshire Square, London, EC2M 4PL |
| CLAYDEN, Paul Francis RESIGNED | Director | 06 Jan 2011 | 27 Sep 2012 | United Kingdom | March 1969 | 8, Devonshire Square, London, EC2M 4PL, United Kingdom |
| DEVINE, John Hunter RESIGNED | Director | 20 Nov 1997 | 30 Sep 1998 | | December 1935 | Stonehaven Petworth Road, Wormley, Godalming, Surrey, GU8 5TR |
| DURES, George William RESIGNED | Director | 27 Jul 1994 | 27 Jul 1994 | | April 1939 | The Old Laundry, Colwood Lane, Warningfield, Sussex, RH17 5UE |
| DURMAN, Roger George RESIGNED | Director | 01 Aug 1994 | 01 Aug 1994 | | February 1939 | 101 Burbage Road, London, SE24 9HD |
| FRY, Richard Ayrton RESIGNED | Director | | 31 May 1994 | | April 1947 | Pheonix House 105 Ditton Road, Surbiton, Surrey, KT6 6RJ |
| GALE, Stephen Dudley RESIGNED | Director | 06 Jan 2011 | 30 Apr 2014 | United Kingdom | September 1975 | 8, Devonshire Square, London, EC2M 4PL, England |
| GOWER, Michael Vincent RESIGNED | Director | 25 Apr 1996 | 17 May 1998 | | January 1955 | Moray, Radford Road, Crawley, West Sussex, RH10 3NW |
| HANSON, Philip Leighton RESIGNED | Director | 28 Apr 2014 | 15 Apr 2016 | England | January 1977 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| HOGWOOD, Paul Arthur RESIGNED | Director | 20 Sep 2016 | 28 Jun 2019 | United Kingdom | July 1949 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN |
| MAN, William Mortimer RESIGNED | Director | 12 Aug 1996 | 18 Nov 1997 | | August 1940 | Grantchester Kingswood Road, Tunbridge Wells, Kent, TN2 4UJ |
| MIDDLETON, Robert Campbell RESIGNED | Director | 31 Dec 2007 | 31 Aug 2010 | | November 1962 | Aon Consulting, 40 Torphichen Street, Edinburgh, Lothian, EH3 8JB |
| MUGASHU, Gardner RESIGNED | Director | 03 Dec 2019 | 16 Dec 2019 | United Kingdom | October 1973 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN |
| NEWMAN, Robert William RESIGNED | Director | | 12 Mar 1993 | | September 1933 | 7 The Fairway, Upminster, Essex, RM14 1BS |
| OBRIEN, Danny John RESIGNED | Director | | 15 Aug 1995 | | January 1947 | 12 Quick Street, London, N1 8HL |
| OWEN, James RESIGNED | Director | 20 Nov 1997 | 30 Jun 1998 | | April 1940 | 25 Hanningtons Way, Burghfield Common, Reading, Berkshire, RG7 3BE |
| PITCHFORD, Christopher Ian RESIGNED | Director | | 01 Jan 1992 | | February 1957 | 19 Elmfield Mansions, Elmfield Road, London, SW17 8AA |
| ROWLANDS, Oliver Michael RESIGNED | Director | 31 Aug 2010 | 03 Dec 2010 | United Kingdom | February 1964 | 8, Devonshire Square, London, EC2M 4PL, England |
| STEEPLES, Brian RESIGNED | Director | 27 Aug 1996 | 22 Sep 1997 | Scotland | February 1960 | 2 Larchfield Road, Bearsden, Glasgow, Strathclyde, G61 1AR |
| WILL, Richard Edward RESIGNED | Director | | 20 Nov 1997 | | May 1952 | Northlands 27 Lewes Road, Haywards Heath, West Sussex, RH17 7SP |
| WILLIAMS, Christine Marie RESIGNED | Director | 13 Nov 2012 | 30 Mar 2017 | United Kingdom | September 1974 | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN, United Kingdom |
| WINCH, Mary RESIGNED | Director | | 08 May 1992 | | October 1940 | 41 Thanet Road, Bexley, Kent, DA5 1AP |