| HARLAND, Shima Rad ACTIVE | Secretary | 23 Mar 2024 | | | | Syensqo, Trinity Street, Oldbury, West Midlands, B69 4LN, England |
| DAIN, Mark St.John ACTIVE | Director | 25 Jul 2022 | | England | June 1967 | Syensqo, Trinity Street, Oldbury, West Midlands, B69 4LN, England |
| DOCHERTY, Gordon Findlay ACTIVE | Director | 26 Sep 2024 | | England | September 1971 | Syensqo, Trinity Street, Oldbury, West Midlands, B69 4LN, England |
| BEASLEY, Christopher Ernest RESIGNED | Secretary | 23 Mar 2000 | 29 Feb 2004 | | | 213a Archway Road, Highgate, London, N6 5BN |
| CREE, Andrew Peter RESIGNED | Secretary | | 23 Oct 1996 | | | 7 Auden Close, Church Broughton, Derby, Derbyshire, DE65 5AG |
| CUNNINGTON, Geoffrey Charles William RESIGNED | Secretary | 23 Oct 1996 | 30 Apr 1999 | | | 8 Bagehott Close, Droitwich, Worcestershire, WR9 8UJ |
| HUMPHREYS, Stuart Calvin RESIGNED | Secretary | 01 Nov 1999 | 09 Jun 2000 | | | Woodbine Cottage, Old Forge Lane, Granby, Nottinghamshire, NG13 9PS |
| IAPICHINO, Alex RESIGNED | Secretary | 09 Mar 2023 | 22 Mar 2024 | | | Solvay Solutions, Trinity Street, Oldbury, West Midlands, B69 4LW, England |
| MURPHY, Alison RESIGNED | Secretary | 14 Sep 2007 | 01 Jan 2022 | | | 34, Clarendon Road, Watford, Hertfordshire, WD17 1JJ, United Kingdom |
| PALMER, Jane Ann RESIGNED | Secretary | 29 Feb 2004 | 14 Sep 2007 | | | 38 Manor Road, Teddington, Middlesex, TW11 8AB |
| RAD, Shima RESIGNED | Secretary | 01 Jan 2022 | 09 Mar 2023 | | | 34, Clarendon Road, Watford, WD17 1JJ, United Kingdom |
| ADSETTS, John Robert, Dr RESIGNED | Director | 24 Jun 1994 | 31 May 1998 | | April 1944 | Smalldean Farmhouse, Smalldean Lane Lacey Green, Princes Risborough, Buckinghamshire, HP27 0PR |
| AULAGNON, Marie Christine RESIGNED | Director | 23 Mar 2000 | 07 Feb 2001 | | March 1963 | 38 Netherhall Gardens, Flat 2, London, NW3 5TP |
| BLACK, Geoffrey Ian RESIGNED | Director | 30 Aug 1996 | 04 Dec 1998 | United Kingdom | December 1940 | 4 Beech Park Drive, Barnt Green, Birmingham, B45 8LZ |
| CREE, Andrew Peter RESIGNED | Director | 07 Dec 1998 | 31 Oct 1999 | | August 1952 | 7 Auden Close, Church Broughton, Derby, Derbyshire, DE65 5AG |
| DAWES, Melvin John RESIGNED | Director | 01 Dec 2014 | 31 May 2023 | United Kingdom | April 1967 | 34, Clarendon Road, Watford, Hertfordshire, WD17 1JJ, United Kingdom |
| DUTTON, Tom RESIGNED | Director | 01 Dec 2014 | 30 Sep 2024 | United Kingdom | September 1964 | Solvay Solutions, Trinity Street, Oldbury, West Midlands, B69 4LW, England |
| ECKERT, David D RESIGNED | Director | 23 Mar 2000 | 07 Feb 2001 | | November 1948 | 4 Rue De La Tremoille, Paris, 75008, FOREIGN, France |
| HAMPSON, Stephen RESIGNED | Director | 27 Sep 2007 | 30 Sep 2010 | | July 1965 | Rhodia Uk Limited, Trinity Street, Oldbury, West Midlands, B69 4LN, United Kingdom |
| HUMPHREYS, Stuart Calvin RESIGNED | Director | 07 Dec 1998 | 23 Mar 2000 | England | February 1963 | Woodbine Cottage, Old Forge Lane, Granby, Nottinghamshire, NG13 9PS |
| KOW, Gabriel Choon Mooi RESIGNED | Director | 23 Mar 2000 | 31 Mar 2001 | | June 1948 | 61 Cairnhill Road, 05-01, Horizon View, 229 670, Singapore |
| LEVER, Kenneth RESIGNED | Director | 23 Oct 1996 | 31 Dec 1999 | | September 1953 | 47 Burgess Wood Road South, Beaconsfield, Buckinghamshire, HP9 1EL |
| MAUPU, Michel Marie Paul Fernand RESIGNED | Director | 23 Mar 2000 | 12 Jun 2000 | | May 1947 | 22 Fitzjohns Avenue, London, NW3 5NB |
| MCCOTTER, Richard Andrew RESIGNED | Director | | 31 Mar 1994 | | March 1940 | Turrett House 9 Oldnall Road, Kidderminster, Worcestershire, DY10 3HW |
| MURPHY, Alison RESIGNED | Director | 07 Jun 2010 | 30 Aug 2022 | United Kingdom | December 1965 | 34, Clarendon Road, Watford, Hertfordshire, WD17 1JJ, United Kingdom |
| PAUL, Robert Cameron, Dr RESIGNED | Director | | 31 Jul 1997 | | July 1935 | 2 Devonshire Place, London, W8 5UD |
| PODGER, Francis Hugh Champeney RESIGNED | Director | | 31 Mar 1993 | | November 1929 | Northleigh, King's Worthy, Winchester, Hants, SO23 7QN |
| RIDGWAY, David Kenneth RESIGNED | Director | 31 Jul 2000 | 01 Dec 2000 | United Kingdom | August 1954 | 7 Katherine Close, Penn, Buckinghamshire, HP10 8ET |
| SCOTT, John Michael RESIGNED | Director | 16 Dec 2005 | 28 Sep 2007 | United Kingdom | February 1960 | Kingzetts House, Crowle Road Tibberton, Droitwich, Worcestershire, WR9 7NT |
| STEEL, Alistair James RESIGNED | Director | 31 Jul 2000 | 16 Dec 2005 | | April 1951 | Badgers Retreat Roundheads End, Forty Green, Beaconsfield, Buckinghamshire, HP9 1YB |
| TULLY, Kevin Patrick RESIGNED | Director | 07 Dec 1998 | 23 Mar 2000 | | August 1953 | Little Stourton, Bridgnorth Road, Stourton, Stourbridge, West Midlands, DY7 5BJ |
| TYLER, Robert William RESIGNED | Director | 21 Dec 2001 | 30 Nov 2014 | United Kingdom | February 1947 | Oak House, Reeds Crescent, Watford, Herts, WD24 4QP, United Kingdom |
| VIDAL, Philippe RESIGNED | Director | 31 Jul 2000 | 21 Dec 2001 | | June 1941 | House No 1, 2 Frithwood Avenue, Northwood, Middlesex, HA6 3LX |
| WINSTANLEY, William Michael RESIGNED | Director | 01 Apr 1993 | 30 Aug 1996 | | August 1936 | Astwood Court, Feckenham, Worcestershire, B96 6HD |