| LYNHAM, David Paul ACTIVE | Secretary | 18 Jan 2022 | | | | Ecolab Limited, Winnington Avenue, Northwich, Cheshire, CW8 4DX, United Kingdom |
| HOUGH, Debra Jayne ACTIVE | Director | 01 Jan 2022 | | England | August 1974 | Ecolab Limited, Winnington Avenue, Northwich, Cheshire, CW8 4DX, United Kingdom |
| LUND, Per ACTIVE | Director | 05 Sep 2025 | | Denmark | May 1969 | Ecolab Limited, Winnington Avenue, Northwich, Cheshire, CW8 4DX, United Kingdom |
| BLACKABY, Paul Richard RESIGNED | Secretary | 27 Jan 2003 | 31 Mar 2003 | | | 23 Bittern Grove, Macclesfield, Cheshire, SK10 3QP |
| HARVEY, Peter Graham Crawford RESIGNED | Secretary | 01 Mar 2004 | 20 Jun 2012 | | | 7th Floor David Murray John, Building, Brunel Centre, Swindon, Wilts, SN1 1NH |
| JOYCE, Wendy Annette RESIGNED | Secretary | 20 Jun 2012 | 18 Jan 2022 | | | Nalco Head Office, Winnington Avenue, Northwich, Cheshire, CW8 4DX, England |
| MELLOR, John Brewis RESIGNED | Secretary | | 29 Nov 2002 | | | 3 Beech Close, Faringdon, Oxfordshire, SN7 7EN |
| WEBER, Stephan Walter RESIGNED | Secretary | 29 Nov 2002 | 01 Mar 2004 | | | 77 Gibson Close, Abingdon, Oxfordshire, OX14 1XS |
| ADAMS, David Evan RESIGNED | Director | 25 Apr 2007 | 29 Jun 2010 | Gb-Eng | May 1960 | Chancery House, St Nicholas Way, Sutton, Surrey, SM1 1JB, England |
| BILLETTE DE VILLEMEUR, Eric RESIGNED | Director | 28 Jun 2019 | 01 Jan 2022 | France | March 1985 | P.O. Box 11, Winnington Avenue, Northwich, Cheshire, CW8 4DX, United Kingdom |
| BOND, Colin Michael RESIGNED | Director | 15 Mar 2007 | 27 Aug 2008 | | January 1960 | Hasenbuelstrasse 11, Ebmatingen, 8123, Switzerland |
| BRUENS, Wilhelmus Paul Franciscus Marie RESIGNED | Director | 20 Nov 1991 | 03 Feb 2000 | | March 1944 | Negen Novemberweg 15, Venlo, NL5916, Netherlands |
| CARROLL, Stephen John RESIGNED | Director | 13 Mar 2006 | 13 Jun 2014 | England | October 1954 | Chancery House, St Nicholas Way, Sutton, Surrey, SM1 1JB, England |
| COLENSO, Frank RESIGNED | Director | 01 Dec 1993 | 23 Dec 1996 | | March 1952 | 65 St Helens Avenue, Benson, Oxfordshire, OX10 6RU |
| COLONIUS, Herbert RESIGNED | Director | 14 Mar 1995 | 17 Apr 1997 | | July 1936 | Rue De La Ferme 1, Le Chesnay, F 78150, France |
| FLAGG, Peter Leslie RESIGNED | Director | 06 May 1999 | 29 Nov 2002 | United Kingdom | February 1947 | Woodlands 100 Wells Road, Malvern, Worcestershire, WR14 4PG |
| GICHTBROCK, Ralph Eduard RESIGNED | Director | 10 Dec 2008 | 21 Sep 2017 | Germany | March 1956 | 38-42, Reisholzer Werftstrasse, Dusseldorf, D-40589, Germany |
| GICHTBROCK, Ralph RESIGNED | Director | 30 Apr 1999 | 10 May 1999 | | March 1956 | Reisholzer Werftstrasse 38 40, Dusseldorf, Hothausen, D 40589, FOREIGN, Germany |
| HARVEY, Peter Graham Crawford RESIGNED | Director | 13 Mar 2006 | 20 Jun 2012 | England | August 1957 | 7th Floor David Murray John, Building, Brunel Centre, Swindon, Wilts, SN1 1NH |
| HENMAN, Andrew John RESIGNED | Director | 26 May 1993 | 30 Apr 1999 | United Kingdom | February 1954 | 168a Finchampstead Road, Wokingham, Berkshire, RG40 3EY |
| HEY, Paul RESIGNED | Director | 22 Dec 2015 | 30 Nov 2022 | England | October 1964 | Winnington Avenue, Northwich, Cheshire, CW8 4DX, United Kingdom |
| HOUGHTBY, John Ralph RESIGNED | Director | 05 Jul 2010 | 22 Apr 2013 | England | October 1966 | Chancery House, St. Nicholas Way, Sutton, Surrey, SM1 1JB, England |
| HUKSHORN, Hans-Peter RESIGNED | Director | 14 Mar 1995 | 30 Sep 1996 | | February 1948 | Valklaan 18, Bilthoven Zk, NL3722, Netherlands |
| KIRKHAM, John RESIGNED | Director | 01 Apr 1992 | 11 Sep 1992 | | April 1940 | Barrington Samoy Lane, Church Brampton, Northampton, NN6 8AX |
| LEE, Carl Richmond RESIGNED | Director | 20 Jun 2012 | 28 Jun 2019 | England | May 1963 | Nalco Head Office, Winnington Avenue, Northwich, Cheshire, CW8 4DX, England |
| MAHAL, Mark Gregory RESIGNED | Director | 13 Mar 2006 | 09 Feb 2007 | | April 1952 | Sonnenacker 22, 40489, Dusseldorf, FOREIGN, Germany |
| MATTSSON, Goran RESIGNED | Director | 06 May 1999 | 16 May 2002 | | August 1945 | Kyrkogatan 3, Malmo S-21122, Sweden, FOREIGN |
| MCCORMICK, Michael Casey RESIGNED | Director | 15 Mar 2007 | 11 May 2009 | | December 1962 | Alte Kalkumer Strasse 85, 40489 Dusseldorf, FOREIGN, Germany |
| MELLOR, John Brewis RESIGNED | Director | 17 Apr 1997 | 29 Nov 2002 | United Kingdom | November 1954 | 3 Beech Close, Faringdon, Oxfordshire, SN7 7EN |
| MELLOR, John Brewis RESIGNED | Director | | 26 May 1993 | | November 1954 | 3 Hampden Close, Faringdon, Oxfordshire, SN7 7YX |
| MILLSAP, James Michael RESIGNED | Director | 01 Jul 1991 | 01 Oct 1991 | | November 1945 | 1242 Culligan Lane, Mendota Heights Minnesota 55118, FOREIGN, Usa |
| MOYNIHAN, Brian Humphrey RESIGNED | Director | 13 Mar 2006 | 15 Mar 2007 | England | April 1960 | 28 Whitehall Drive, Hartford, Cheshire, CW8 1SJ |
| PRINGLE, Ronald John Lindsay RESIGNED | Director | 04 Dec 2001 | 13 Mar 2006 | | August 1959 | Roxburgh, Kier Park, Ascot, Berkshire, SL5 7DS |
| RAWDING, Paul RESIGNED | Director | 25 Oct 2024 | 05 Sep 2025 | England | January 1971 | Ecolab Limited, Winnington Avenue, Northwich, Cheshire, CW8 4DX, United Kingdom |
| RAWDING, Paul RESIGNED | Director | 20 Dec 2018 | 08 Jul 2019 | United Kingdom | January 1971 | Winnington Avenue, Northwich, Cheshire, CW8 4DX, United Kingdom |
| RAWDING, Paul RESIGNED | Director | 22 Apr 2013 | 22 Dec 2015 | United Kingdom | January 1971 | Chancery House, St Nicholas Way, Sutton, SM1 1JB, United Kingdom |
| THOMPSON, Claire RESIGNED | Director | 30 Nov 2022 | 25 Oct 2024 | United Kingdom | May 1980 | Ecolab Limited, Winnington Avenue, Northwich, Cheshire, CW8 4DX, United Kingdom |
| TOMKIES, Christopher John RESIGNED | Director | 05 Jul 2010 | 16 May 2012 | England | July 1963 | 7th Floor David Murray John, Building, Brunel Centre, Swindon, Wilts, SN1 1NH |
| WALKER, David RESIGNED | Director | 21 Sep 2017 | 20 Dec 2018 | England | August 1969 | Winnington Avenue, Northwich, Cheshire, CW8 4DX, United Kingdom |
| WEBER, Stephan Walter RESIGNED | Director | 01 Aug 2003 | 15 Mar 2007 | | December 1964 | 77 Gibson Close, Abingdon, Oxfordshire, OX14 1XS |
| WEBER, Stephan Walter RESIGNED | Director | 21 Oct 2002 | 27 Jan 2003 | | December 1964 | 77 Gibson Close, Abingdon, Oxfordshire, OX14 1XS |
| YEARSLEY, Robert William RESIGNED | Director | 30 Mar 1999 | 03 Mar 2002 | United Kingdom | April 1948 | Whitegables, Fford Corwen Treuddyn, Mold, Flintshire, C47 4LD |