| HARBOUR ENERGY SECRETARIES LIMITED ACTIVE | Secretary | 10 Oct 2022 | | | | 151, Buckingham Palace Road, London, SW1W 9SZ, England |
| BARR, Scott ACTIVE | Director | 12 Dec 2024 | | Scotland | July 1976 | 151, Buckingham Palace Road, London, SW1W 9SZ, England |
| LANDES, Howard Ralph ACTIVE | Director | 20 Oct 2021 | | United Kingdom | December 1975 | 151, Buckingham Palace Road, London, SW1W 9SZ, England |
| SCOTT, Russell ACTIVE | Director | 12 Dec 2024 | | Scotland | September 1973 | 151, Buckingham Palace Road, London, SW1W 9SZ, England |
| CARTER, Stuart James RESIGNED | Secretary | 21 Feb 2003 | 31 Mar 2006 | | | Ash Manor Oast, Ash Green Road, Ash, Aldershot, Hampshire, GU12 6HH |
| CHESTER, Kevin Wayne RESIGNED | Secretary | 21 Feb 2003 | 13 Oct 2003 | | | 61 South Park Road, Wimbledon, London, SW19 8RT |
| DONALDSON, Michael P. RESIGNED | Secretary | 21 Feb 2003 | 31 Mar 2006 | | | 718 Country Lane, Houston, Harris/Texas 77024, U.S.A |
| FLETCHER, Angela Sarah Helen RESIGNED | Secretary | 01 Apr 2008 | 23 Apr 2014 | | | Portman House, 2 Portman Street, London, W1H 6DU |
| GRIMSHAW, David RESIGNED | Secretary | 31 Mar 2006 | 30 Sep 2019 | | | Brettenham House, Lancaster Place, London, WC2E 7EN, England |
| LANDES, Howard Ralph RESIGNED | Secretary | 30 Sep 2019 | 10 Oct 2022 | | | Brettenham House, Lancaster Place, London, WC2E 7EN, England |
| LE-CORE, Deborah Ellen RESIGNED | Secretary | 21 Feb 2003 | 31 Mar 2006 | | | The Holdings, 111 Edwin Road, Rainham, Gillingham, Kent, ME8 0AG |
| MONTE, Jeffery Paul RESIGNED | Secretary | 19 Jan 2000 | 31 Mar 2006 | | | 4838 Knickerbocker Street, Houston, Texas 77035, Usa |
| OGILVIE, David Stewart RESIGNED | Secretary | 13 Oct 2006 | 01 Apr 2008 | | | 52 Hamilton Place, Aberdeen, Aberdeenshire, AB15 4BH |
| PEPIN, Jean-Francois Jacques Basile RESIGNED | Secretary | 04 Jun 2013 | 14 Aug 2014 | | | Portman House, 2 Portman Street, London, W1H 6DU |
| PLAEGER, Frederick J. RESIGNED | Secretary | 21 Feb 2003 | 31 Mar 2006 | | | 5105 Longmont Drive, Houston, Harris/Texas 77056, U.S.A. |
| SIVERS, Ruth Ann RESIGNED | Secretary | 21 Feb 2003 | 31 Jan 2006 | | | 5009 Imperial, Bellaire, Harris Texas 77401, Usa |
| VAUGHAN, Anne RESIGNED | Secretary | 21 Feb 2003 | 31 Mar 2006 | | | 5405 Schumacher, Houston Harris, Texas 77056, U.S.A. |
| WARD, Elaine June RESIGNED | Secretary | 31 Mar 2006 | 13 Oct 2006 | | | 18 Balmoral Place, Aberdeen, Aberdeenshire, AB10 6HR |
| ZERWAS, Wendi Shackelford RESIGNED | Secretary | 01 Jul 1998 | 19 Jan 2000 | | | 12807 Jubilee Park Court, Houston 77065 Texas, Usa |
| SWIFT INCORPORATIONS LIMITED RESIGNED | Nominee Secretary | 22 Sep 1997 | 22 Sep 1997 | | | 26, Church Street, London, NW8 8EP |
| BLACKFORD, Timothy Ronald RESIGNED | Director | 21 Feb 2003 | 31 Mar 2006 | England | February 1955 | Restharrow, Franksfield, Peaslake, Surrey, GU5 9SS |
| CARTER, Stuart James RESIGNED | Director | 13 Aug 2003 | 31 Mar 2006 | | May 1963 | Ash Manor Oast, Ash Green Road, Ash, Aldershot, Hampshire, GU12 6HH |
| CHENIER, David Eric RESIGNED | Director | 19 Apr 2012 | 01 Aug 2015 | Scotland | April 1962 | Portman House, 2 Portman Street, London, W1H 6DU |
| CHESTER, Kevin Wayne RESIGNED | Director | 01 May 2000 | 13 Oct 2003 | United Kingdom | December 1950 | 61 South Park Road, Wimbledon, London, SW19 8RT |
| CONWAY, Christopher William RESIGNED | Director | 13 Apr 2010 | 30 Apr 2012 | England | January 1957 | Portman House, 2 Portman Street, London, W1H 6DU |
| COOK, Philip Wayne RESIGNED | Director | 01 Jul 1998 | 31 Mar 2001 | | November 1961 | 2736 Quenby, Houston 77005 Texas, Usa, FOREIGN |
| FARTHING, David Andrew, Vivian RESIGNED | Director | 25 Nov 2008 | 09 Oct 2009 | Scotland | September 1957 | Ffyrling Dy, St. Eunans Road, Aboyne, Aberdeenshire, AB34 5HH, Scotland |
| FRALEY, Richard Earl RESIGNED | Director | 16 Aug 1999 | 30 Apr 2001 | | June 1957 | No 3 Portland Park, Gerrards Cross, Buckinghamshire, SL9 7PX |
| FREDIN, Todd William RESIGNED | Director | 31 Mar 2006 | 31 Jan 2010 | | May 1954 | Thornton, 48 Ince Road Burwood Park, Walton On Thames, Surrey, KT12 5BJ |
| FRETWELL, Michael Robert RESIGNED | Director | 31 Mar 2006 | 15 Oct 2006 | United Kingdom | June 1951 | Mulberry House 3 Glenfields, West End Lane, Stoke Poges, Buckinghamshire, SL2 4LS |
| HAGALE, John Edward RESIGNED | Director | 22 Sep 1997 | 18 Oct 2000 | | October 1956 | 2 Stayton Circle, Houston 77024 Texas, Usa |
| HALLIWELL, Andrew Roy RESIGNED | Director | 31 Mar 2006 | 05 Mar 2010 | | March 1957 | Portman House, 2 Portman Street, London, W1H 6DU |
| HANOWER, Lee David RESIGNED | Director | 01 Jul 1998 | 31 Mar 2006 | | June 1959 | 415 Shadywood, Houston 77057 Texas, Usa, FOREIGN |
| HASTINGS, Andrew David Richard RESIGNED | Director | 09 Oct 2009 | 15 Jun 2018 | Scotland | February 1961 | 20th Floor, 1 Angel Court, London, EC2R 7HJ, England |
| JOLY, Christopher Charles RESIGNED | Director | 21 Feb 2003 | 30 Apr 2004 | | November 1958 | Fairwood, Grange Drive, High Wycombe, Buckinghamshire, HP10 0QD |
| KENNEDY, Archibald Wood RESIGNED | Director | 31 Mar 2006 | 03 Apr 2009 | United Kingdom | June 1958 | The Garran, Crawton Bay, Stonehaven, Aberdeenshire, AB39 2TP |
| KING, Terri Gay RESIGNED | Director | 05 Jan 2017 | 30 Sep 2019 | United Kingdom | March 1961 | Brettenham House, Lancaster Place, London, WC2E 7EN, England |
| KIRK, Philip Andrew RESIGNED | Director | 30 Sep 2019 | 28 Feb 2022 | England | May 1966 | Brettenham House, Lancaster Place, London, WC2E 7EN, England |
| KRANE, Alexander Lorentzen RESIGNED | Director | 20 Oct 2021 | 12 Dec 2024 | Norway | March 1976 | 151, Buckingham Palace Road, London, SW1W 9SZ, England |
| LIMBACHER, Randy Lee RESIGNED | Director | 21 Feb 2003 | 31 Oct 2007 | | April 1958 | 16122 Wimbledon Champions Dr., Spring, Texas 77379, Usa |
| MACKLON, Dominic Edward RESIGNED | Director | 01 Aug 2015 | 05 Jan 2017 | Scotland | April 1969 | Portman House, 2 Portman Street, London, W1H 6DU |
| MCCOY, Joseph Patrick RESIGNED | Director | 30 Sep 2005 | 31 Mar 2006 | | March 1951 | 10811 Timberglen Drive, Houston, Texas, TX 7702, United States Of America |
| NUSZ, Thomas RESIGNED | Director | 12 Jan 2004 | 31 Mar 2006 | | July 1959 | 23 North Benton Woods Circle, The Woodlands, Houston, Texas 77382, U.S.A. |
| OSBORNE, Andrew Jon RESIGNED | Director | 30 Sep 2019 | 26 Oct 2021 | United Kingdom | November 1969 | Brettenham House, Lancaster Place, London, WC2E 7EN, England |
| OWEN, Charles Ray RESIGNED | Director | 22 Sep 1997 | 01 Jul 1998 | | July 1945 | 5470 Tilbury Drive, Houston 77056 Texas, Usa, FOREIGN |
| PLAEGER, Frederick J. RESIGNED | Director | 13 Aug 2003 | 31 Mar 2006 | | September 1953 | 5105 Longmont Drive, Houston, Harris/Texas 77056, U.S.A. |
| REYNOLDS, Kermit Earl RESIGNED | Director | 02 Dec 1997 | 15 Feb 2000 | | September 1960 | 2 Amblecote, Cobham, Surrey, KT11 2JP |
| RITSON, Neil RESIGNED | Director | 01 May 2001 | 12 Jan 2004 | England | December 1955 | 27 Shouldham Street, London, W1H 5FL |
| SCHISSLER, Gerald James RESIGNED | Director | 22 Sep 1997 | 01 Jul 1998 | | January 1944 | 6 Carlton Park, Houston 77024 Texas, Usa, FOREIGN |
| SCOTT, Russell RESIGNED | Director | 25 Sep 2018 | 30 Sep 2019 | Scotland | September 1973 | Brettenham House, Lancaster Place, London, WC2E 7EN, England |
| SHAPIRO, Steven Jon RESIGNED | Director | 18 Oct 2000 | 30 Sep 2005 | | March 1952 | 432 Flint Point, Houston, Texas 77024, Usa |
| SIMPSON, Katherine Susan RESIGNED | Director | 15 Jun 2018 | 22 May 2019 | United Kingdom | October 1961 | 20th Floor, 1 Angel Court, London, EC2R 7HJ, England |
| STALKER, Ross Graham RESIGNED | Director | 31 Oct 2015 | 25 Sep 2018 | United Kingdom | October 1964 | 20th Floor, 1 Angel Court, London, EC2R 7HJ, England |
| VALENTINE, Jeremy Hugh RESIGNED | Director | 01 Jun 2004 | 31 Mar 2006 | England | March 1962 | 23 Deanway, Chalfont St Giles, Buckinghamshire, HP8 4JL |
| WARRENDER, John Mcandrew RESIGNED | Director | 25 Nov 2008 | 03 Jul 2013 | Scotland | July 1961 | Portman House, 2 Portman Street, London, W1H 6DU |
| WARWICK, Paul Cyril RESIGNED | Director | 03 Apr 2009 | 30 Apr 2012 | Scotland | April 1953 | Portman House, 2 Portman Street, London, W1H 6DU |
| WILLIAMS, John Arthur RESIGNED | Director | 01 Jul 1998 | 21 Feb 2003 | | October 1944 | 2707 Barbara Lane, Houston 77005 Texas, Usa |
| WOLFE, Patrick RESIGNED | Director | 22 May 2019 | 30 Sep 2019 | Scotland | February 1963 | Brettenham House, Lancaster Place, London, WC2E 7EN, England |
| WRIGHT, Michael Don RESIGNED | Director | 26 Jul 2013 | 31 Oct 2015 | Scotland | May 1964 | Portman House, 2 Portman Street, London, W1H 6DU |
| YOUNG, William Alan RESIGNED | Director | 01 Sep 2003 | 31 Mar 2006 | | December 1950 | 11746 Quail Creek Drive, Houston, Texas 77070, Usa |
| ZERWAS, Wendi Shackelford RESIGNED | Director | 22 Sep 1997 | 01 Jul 1998 | | October 1965 | 12807 Jubilee Park Court, Houston 77065 Texas, Usa |
| INSTANT COMPANIES LIMITED RESIGNED | Nominee Director | 22 Sep 1997 | 22 Sep 1997 | | | 1, Mitchell Lane, Bristol, Avon, BS1 6BU |