| BRUCE, Samantha, Dr ACTIVE | Director | 22 Apr 2024 | | United Kingdom | April 1973 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| SIMPSON, Richard ACTIVE | Director | 31 Mar 2022 | | United Kingdom | August 1986 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| CARTER, Lynette Jean Cherryl RESIGNED | Secretary | 15 May 2017 | 31 May 2018 | | | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| CUNNINGTON, Geoffrey Charles William RESIGNED | Secretary | 19 Aug 1994 | 01 Oct 1995 | | | 13 Longley Road, Harrow, Middlesex, HA1 4TG |
| LITTLE, Anne Catherine RESIGNED | Secretary | | 16 Aug 1995 | | | 146 Coldershaw Road, Ealing, London, W13 9DT |
| POMEROY, Valerie Ann RESIGNED | Secretary | 31 Dec 1998 | 30 Sep 2010 | | | 26th Floor Portland House, Bressenden Place, London, SW1E 5BG |
| STEVENS, David Alan RESIGNED | Secretary | 16 Aug 1995 | 31 Dec 1998 | | | The Maze Felcot Road, Furnace Wood Felbridge, East Grinstead, West Sussex, RH19 2QA |
| O.H. SECRETARIAT LIMITED RESIGNED | Secretary | 30 Sep 2010 | 15 May 2017 | | | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| ATKINSON, Nigel RESIGNED | Director | 12 May 2015 | 31 Mar 2023 | United Kingdom | April 1970 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| BANNWART, Mauricio RESIGNED | Director | 19 Jan 2015 | 30 Sep 2017 | United Kingdom | May 1962 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| BOLLAND, Christopher RESIGNED | Director | 27 Feb 2006 | 31 Jan 2015 | United Kingdom | January 1955 | 26th Floor Portland House, Bressenden Place, London, SW1E 5BG |
| BOOTH, Mark RESIGNED | Director | 11 Sep 2017 | 01 May 2018 | United Kingdom | March 1971 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| BOYLE, John Michael Stephen RESIGNED | Director | | 30 Apr 1993 | | August 1952 | 264 Trinity Road, London, SW18 3RQ |
| BREEN, Gary Joseph RESIGNED | Director | 10 Jan 2011 | 31 Jan 2015 | United Kingdom | June 1962 | 26th Floor, Portland House, Bressenden Place, London, SW1E 5BG |
| DARNER, Leif Erik RESIGNED | Director | 10 May 2000 | 01 May 2004 | | April 1952 | Blewbury House Hawksview, Cobham, Surrey, KT11 2PJ |
| GARRETT, Sarah RESIGNED | Director | 12 Jan 2017 | 31 Dec 2017 | United Kingdom | October 1971 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| GHOSH, Arabinda RESIGNED | Director | 12 Nov 1999 | 24 Apr 2001 | | August 1962 | The New House, Aspen Close, Stoke Dabernon, Cobham, Surrey, KT11 3AD |
| HESSELINK, Sebastiaan RESIGNED | Director | 10 Oct 2024 | 31 Mar 2026 | United Kingdom | August 1971 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| LANDLESS, David Farrington RESIGNED | Director | 16 Jul 1997 | 05 Mar 1999 | United Kingdom | January 1960 | Marlpool 60 Heybridge Lane, Prestbury, Macclesfield, Cheshire, SK10 4ER |
| LITTLE, Anne Catherine RESIGNED | Director | | 28 Aug 1998 | | March 1955 | 146 Coldershaw Road, Ealing, London, W13 9DT |
| LOCKHART, John RESIGNED | Director | 27 Jan 2015 | 31 Dec 2016 | United Kingdom | January 1961 | 26th Floor, Portland House, Bressenden Place, London, SW1E 5BG, United Kingdom |
| MARSH, Geoffrey Douglas RESIGNED | Director | 20 Dec 2000 | 01 Mar 2005 | England | June 1949 | 99 High Street, Ryton On Dunsmore, Coventry, West Midlands, CV8 3FJ |
| MCPHERSON, William James RESIGNED | Director | 01 May 2004 | 07 Apr 2010 | United Kingdom | January 1948 | 26th Floor Portland House, Bressenden Place, London, SW1E 5BG |
| MORTON, James William RESIGNED | Director | 06 Feb 2018 | 19 Jul 2023 | United Kingdom | June 1979 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| POTTER, Martin John RESIGNED | Director | 24 Apr 2001 | 27 Feb 2006 | | March 1956 | PO BOX 20980 Oriel House, 16 Connaugght Place, London, W2 2ZB |
| TAME, William RESIGNED | Director | 05 Mar 1999 | 12 Nov 1999 | | July 1954 | 3 Chare Head Farm, Main St Acomb, Hexham, Northumberland, NE46 4PL |
| TOMLINSON, Peter Barry RESIGNED | Director | 01 Mar 2005 | 10 Jan 2011 | United Kingdom | November 1962 | 26th Floor Portland House, Bressenden Place, London, SW1E 5BG |
| TURNER, David Allan, Mr. RESIGNED | Director | 27 Jan 2015 | 27 Apr 2015 | United Kingdom | November 1971 | 26th Floor, Portland House, Bressenden Place, London, SW1E 5BG, United Kingdom |
| WALKER, Ian RESIGNED | Director | 07 Apr 2010 | 31 Jan 2015 | United Kingdom | May 1963 | 26th Floor, Portland House, Bressenden Place, London, SW1E 5BG |
| WELCH, Derek Walter RESIGNED | Director | | 06 Apr 2003 | | February 1944 | 45 Hill Rise, Chalfont St Peter, Bucks, SL9 9BJ |
| WESTCOTT, Paul Andrew RESIGNED | Director | 01 Apr 2023 | 01 Oct 2024 | United Kingdom | November 1964 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |
| WHEELER, Robert John RESIGNED | Director | 30 Apr 1993 | 16 Jul 1997 | | January 1936 | 8 Cold Harbour Close, Wickham, Fareham, Hampshire, PO17 5PT |
| WILLIAMS, David Neil RESIGNED | Director | 08 Feb 2017 | 01 Jul 2022 | United Kingdom | February 1966 | The Akzonobel Building, Wexham Road, Slough, SL2 5DS, United Kingdom |