| CENTRICA SECRETARIES LIMITED ACTIVE | Secretary | 08 Sep 2000 | | | | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| MANGERAH, Cassim ACTIVE | Director | 09 Dec 2015 | | United Kingdom | September 1968 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| PARK, John Thomas ACTIVE | Director | 31 Oct 2022 | | United Kingdom | February 1974 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| CALDWELL, Lucy Elizabeth RESIGNED | Secretary | 01 Dec 1997 | 08 Sep 2000 | | | 19 St Davids Drive, Englefield Green, Surrey, TW20 0BA |
| EDWARDS, Mark RESIGNED | Secretary | 09 Jul 1996 | 30 Jan 1997 | | | 16 Ashley Gardens, Harpenden, Herts, AL5 3EY |
| FELTON, Elizabeth Jayne RESIGNED | Secretary | 30 Jan 1997 | 01 Oct 1997 | | | 25 Merlin Clove, Winkfield Row, Bracknell, Berkshire, RG42 7TD |
| FURMSTON, Teresa Jane RESIGNED | Secretary | 30 Jan 1997 | 22 Feb 1999 | | | 12 Hinchley Close, Esher, Surrey, KT10 0BY |
| GARRIHY, Anne RESIGNED | Secretary | 28 Mar 1995 | 30 Jan 1997 | | | 38 Bunbury Way, Epsom, Surrey, KT17 4JP |
| JONES, Maria Bernadette RESIGNED | Secretary | 17 Nov 1994 | 28 Mar 1995 | | | 1 Scriveners Close, Hillfield Road, Hemel Hempstead, Hertfordshire, HP2 4AA |
| RITCHIE, Ian RESIGNED | Secretary | 07 Feb 2000 | 08 Sep 2000 | | | 66 Cherwell Drive, Marston, Oxford, Oxfordshire, OX3 0LZ |
| SCOTT, Sandra RESIGNED | Secretary | 02 Dec 1993 | 09 Jul 1996 | | | 40 The Grove, Ealing, London, W5 5LH |
| COMBINED SECRETARIAL SERVICES LIMITED RESIGNED | Nominee Secretary | 02 Dec 1993 | 02 Dec 1993 | | | Victoria House, 64 Paul Street, London, EC2A 4NG |
| BENTLEY, Phillip Keague RESIGNED | Director | 20 Nov 2000 | 04 Jun 2007 | United Kingdom | January 1959 | Pembroke House, 6 Waldegrave Park, Twickenham, Middlesex, TW1 4TE |
| BLACKER, Norman RESIGNED | Director | 17 Nov 1994 | 10 Nov 1995 | | May 1938 | 51 Waterside Point, Anhalt Road, London, SW11 4PD |
| BLAXALL, Martin John RESIGNED | Director | 02 Dec 1993 | 18 Jul 1994 | | May 1959 | Flat 6, 17 Sutherland Avenue, London, W9 2HE |
| BURGESS, Arthur William RESIGNED | Director | 18 Jul 1994 | 30 Jan 1997 | | November 1940 | 73 Strawberry Vale, Twickenham, Middlesex, TW1 4SJ |
| CLARE, Mark Sydney RESIGNED | Director | 14 Nov 2001 | 21 Mar 2005 | | August 1957 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| CLARE, Mark Sydney RESIGNED | Director | 18 Jul 1994 | 20 Nov 2000 | | August 1957 | Barcombe 47 Copthorne Road, Croxley Green, Rickmansworth, Hertfordshire, WD3 4AH |
| CURRENT, James Harold RESIGNED | Director | 23 Sep 1996 | 02 Mar 1997 | | May 1944 | 71 Briar Hollow Lane, Houston Texas, Usa, FOREIGN |
| EBDON, Douglas Harry RESIGNED | Director | 18 Jul 1994 | 28 Mar 1995 | | March 1945 | The Gables, Hervines Road, Amersham, Bucks, HP6 5HS |
| FRIEDLANDER, Colin David RESIGNED | Director | 18 Jul 1994 | 12 Feb 1996 | | June 1947 | Tanyard Tanners Lane, Eynsham, Witney, Oxfordshire, OX29 4HJ |
| GARDNER, Roy Alan, Sir RESIGNED | Director | 01 Dec 1995 | 21 Mar 2005 | | August 1945 | Old Hall Farm,Gill Hill, Markyate, St Albans, Hertfordshire, AL3 8AR |
| GEROVA, Stefka Georgieva RESIGNED | Director | 02 Jun 2020 | 11 Nov 2022 | United Kingdom | November 1979 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| HACKETT, James Thomas RESIGNED | Director | 18 Jul 1994 | 21 Jun 1995 | | February 1954 | 36 Long Meadow, Winnetka Illinois 60093, Usa, FOREIGN |
| HANAFIN, Vincent Mark RESIGNED | Director | 31 Jul 2008 | 30 Nov 2018 | United Kingdom | October 1959 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| HAZELWOOD, Mark Lewis RESIGNED | Director | 08 Jul 1996 | 23 Sep 1996 | | September 1949 | 15902 Maplehurst, Spring, Texas, 77379, United States |
| HERBERT, Russell RESIGNED | Director | 18 Jul 1994 | 17 Nov 1994 | | April 1944 | Quorndon, Newlands Drive, Maidenhead, Berkshire, SL6 4LL |
| JONES, Maria Bernadette RESIGNED | Director | 02 Dec 1993 | 15 Jul 1994 | | May 1955 | 1 Scriveners Close, Hillfield Road, Hemel Hempstead, Hertfordshire, HP2 4AA |
| JUNGELS, Pierre Jean Marie Henri, Doctor RESIGNED | Director | 12 Feb 1996 | 24 Sep 1996 | | February 1944 | Chauffeurs Cottage 11 The Brookmill, Coley Park Farm, Reading, Berkshire, RG1 6DD |
| KAELBER, Henry Keith RESIGNED | Director | 21 Jun 1995 | 02 Mar 1997 | | May 1948 | 6707 Moss Ridge Drive, Houston, Texas, 77069, Usa |
| LE POIDEVIN, Andrew Daryl RESIGNED | Director | 04 Jun 2007 | 01 Oct 2016 | England | April 1958 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| LEHMANN, Peter Julian, Dr RESIGNED | Director | 28 Mar 1995 | 10 Nov 1995 | | October 1944 | 28 Birchwood Road, London, SW17 9BQ |
| LONGMUIR, Ailsa Zoya RESIGNED | Director | 21 Oct 2019 | 29 Aug 2025 | United Kingdom | November 1982 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| MANNAN, Irfan Ahmad RESIGNED | Director | 21 Mar 2005 | 14 May 2007 | United Kingdom | May 1965 | 56 Birch Grove, West Acton, London, W3 9SR |
| NETEMEYER, Andrew RESIGNED | Director | 18 Nov 2010 | 31 Dec 2015 | United Kingdom | January 1958 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| RANDOLPH, Kenneth England RESIGNED | Director | 18 Jul 1994 | 02 Mar 1997 | | July 1956 | 828 Crestbend Drive, Houston, Texas 77042, Usa |
| ULRICH, Jacob Shields RESIGNED | Director | 21 Mar 2005 | 31 Jul 2008 | England | February 1953 | 74 Drayton Gardens, London, SW10 9SB |
| ULRICH, Jacob Shields RESIGNED | Director | 18 Jul 1994 | 21 Jun 1995 | England | February 1953 | 74 Drayton Gardens, London, SW10 9SB |
| WATSON, Charles Louis RESIGNED | Director | 18 Jul 1994 | 02 Mar 1997 | | February 1950 | 11766 Quailcreek Drive, Houston, Texas, 77070, U.S.A. |
| WESTBY, Jonathan Damian RESIGNED | Director | 01 Oct 2016 | 01 Sep 2020 | United Kingdom | April 1972 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| WOOD, Ian RESIGNED | Director | 21 Mar 2005 | 18 Nov 2010 | United Kingdom | December 1958 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| WORBY, Peter John RESIGNED | Director | 24 May 2018 | 07 Jun 2019 | United Kingdom | December 1956 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| COMBINED NOMINEES LIMITED RESIGNED | Nominee Director | 02 Dec 1993 | 02 Dec 1993 | | | Victoria House, 64 Paul Street, London, EC2A 4NA |
| COMBINED SECRETARIAL SERVICES LIMITED RESIGNED | Nominee Director | 02 Dec 1993 | 02 Dec 1993 | | | Victoria House, 64 Paul Street, London, EC2A 4NG |