| BLAIR, Graeme Thomas ACTIVE | Secretary | 15 Jan 2021 | | | | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| BLAIR, Graeme Thomas ACTIVE | Director | 15 Jan 2021 | | United Kingdom | September 1982 | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| CLEMINSON, Ian Philip ACTIVE | Director | 18 Oct 2006 | | England | November 1965 | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| KAY, Graeme ACTIVE | Director | 17 Jun 2016 | | United Kingdom | January 1976 | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| NORMAN, Keri Louise ACTIVE | Director | 14 Nov 2017 | | England | June 1981 | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| PARSONS, Christopher John ACTIVE | Director | 03 Aug 2019 | | England | July 1976 | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| DAVIES, John Graeme RESIGNED | Secretary | 06 Apr 2004 | 03 Nov 2004 | | | Springfield, Pinfold Lane Plumley, Knutsford, Cheshire, WA16 9RR |
| HARTLEY, Andrew RESIGNED | Secretary | 03 Nov 2004 | 31 Dec 2011 | | | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| LEATHES, Graham De Mussenden RESIGNED | Secretary | 30 Mar 1998 | 23 Dec 1999 | | | 2 Park Mews Vicarage Lane, Little Budworth, Tarporley, Cheshire, CW6 9BP |
| TAYLER, John Phillip RESIGNED | Secretary | 24 Dec 1999 | 06 Apr 2004 | | | The Castle, 46 North Cross Road, Huddersfield, West Yorkshire, HD2 2NL |
| WATT, Brian Robert RESIGNED | Secretary | 01 Jan 2012 | 15 Jan 2021 | | | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| HAMMOND SUDDARDS SECRETARIES LIMITED RESIGNED | Nominee Secretary | 11 Feb 1997 | 27 Mar 1998 | | | 7 Devonshire Square, London, EC2M 4YH |
| BRACEWELL, Mark Andrew RESIGNED | Director | 11 May 2009 | 31 Jan 2014 | England | January 1968 | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| CURRAN, Philip Andrew RESIGNED | Director | 01 Feb 2014 | 02 Aug 2019 | England | December 1970 | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| HARTLEY, Andrew RESIGNED | Director | 15 Apr 2005 | 31 Dec 2011 | England | November 1956 | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| JARVIS, Alan Geoffrey RESIGNED | Director | 30 Mar 1998 | 02 Dec 2002 | | August 1949 | Cob Hall, Hoofield Lane, Huxley, Chester, Cheshire, CH3 9BR |
| JEFFARES, Robert Travis RESIGNED | Director | 22 Aug 1997 | 27 Mar 1998 | | August 1935 | 531 Pawnee Circle, West Lafayette, Indiana, 47906, Usa |
| JENNINGS, Paul Willis RESIGNED | Director | 02 Dec 2002 | 20 Mar 2009 | United Kingdom | March 1957 | 1 The Chestnuts, Mill Lane Willaston, Wirral, CH64 1TU |
| KERRISON, Dennis Graham John RESIGNED | Director | 30 Mar 1998 | 15 Apr 2005 | | August 1944 | Apartment 7 Consort House, 45-46 Queens Gate, London, SW7 5HR |
| PEEL, David Henry RESIGNED | Director | 15 Sep 1997 | 27 Mar 1998 | | June 1951 | Bromstrasse 8, Bottighofen, Ch-8598, Switzerland |
| SCHUE, Gerd RESIGNED | Director | 22 Aug 1997 | 27 Mar 1998 | | March 1935 | Seeweg 12 Ch-8592 Mttwil, Switzerland, FOREIGN |
| WATT, Brian Robert RESIGNED | Director | 18 Jan 2012 | 15 Jan 2021 | United Kingdom | January 1959 | Innospec Manufacturing Park, Oil Sites Road, Ellesmere Port, Cheshire, CH65 4EY |
| HAMMOND SUDDARDS DIRECTORS LIMITED RESIGNED | Nominee Director | 11 Feb 1997 | 22 Aug 1997 | | | 7 Devonshire Square, London, EC2M 4YH |