HARBOUR ENERGY SECRETARIES LIMITED ACTIVERegistration number 12288531 | Secretary | 31 May 2022 | | | | 151, Buckingham Palace Road, London, SW1W 9SZ, England |
| KAUSCHUS, Andreas ACTIVE | Director | 27 Apr 2026 | | United Kingdom | February 1978 | 151, Buckingham Palace Road, London, SW1W 9SZ, United Kingdom |
| LANDES, Howard Ralph ACTIVE | Director | 15 Apr 2021 | | United Kingdom | December 1975 | 151, Buckingham Palace Road, London, SW1W 9SZ, England |
| HEATH, John Antony RESIGNED | Secretary | 20 Oct 1993 | 30 Jun 1997 | | | Toddington Mill, Tewkesbury Road Toddington, Cheltenham, Gloucestershire, GL54 5DG |
| HUDDLE, Stephen Charles RESIGNED | Secretary | 17 Jul 2000 | 29 May 2015 | | | 23, Lower Belgrave Street, London, SW1W 0NR |
| KEENAN, Claudia Louise RESIGNED | Secretary | 30 Jun 1997 | 18 Jun 1999 | | | Flat 2 11 Eccleston Square, London, SW1V 1NP |
| LASCELLES, Rupert John Orlando RESIGNED | Secretary | | 20 Oct 1993 | | | Tarrant Abbey, Tarrant Crawford, Blandford Forum, Dorset, DT11 9HU |
| RICKARD, Rachel Abigail RESIGNED | Secretary | 29 May 2015 | 18 Jan 2017 | | | 23, Lower Belgrave Street, London, SW1W 0NR, England |
| ROSE, Daniel Alexander RESIGNED | Secretary | 01 Nov 2018 | 31 May 2022 | | | 23, Lower Belgrave Street, London, SW1W 0NR, England |
| TAPP, Robert John RESIGNED | Secretary | 18 Jun 1999 | 17 Jul 2000 | | | Manaton West Green Road, Hartley Wintney, Hook, Hampshire, RG27 8LP |
| VICKERS, Julie Alison RESIGNED | Secretary | 18 Jan 2017 | 01 Nov 2018 | | | 23, Lower Belgrave Street, London, SW1W 0NR, England |
| ABDULLAH, Encik Mohammad Medan RESIGNED | Director | 05 Jun 2002 | 12 Sep 2003 | | April 1958 | No.59 Ss 19/Ig, 47500 Subang Jaya, Kuala Lumpur, FOREIGN, Malaysia |
| ALIZAI, Mohamed Azam Khan RESIGNED | Director | 27 Mar 1997 | 28 Jan 2005 | | December 1931 | 10021 Bentcross Drive, Potomac, Montgomery, Md 20854, Usa |
| ALLAN, Robert Andrew RESIGNED | Director | 29 Sep 2005 | 25 Jun 2020 | United Kingdom | December 1959 | 4th Floor, Saltire Court, 20 Castle Terrace, Edinburgh, EH1 2EN |
| BAND, George Christopher RESIGNED | Director | 01 Feb 1990 | 18 Mar 1993 | | February 1929 | Cedar House Thackhams Lane, Hartley Wintney, Hook, Hampshire, RG27 8JG |
| CHALONER, Christopher Benjamin RESIGNED | Director | 18 Oct 2001 | 12 Mar 2002 | United Kingdom | April 1958 | 22 Netherton Road, St Margarets, Twickenham, Middlesex, TW1 1LZ |
| COLLINS, Jennings Barclay RESIGNED | Director | 18 Oct 2001 | 12 Sep 2003 | | October 1944 | 12 North Main Street, Sharon Ct 06069, Usa |
| COOPER, Michael RESIGNED | Director | | 13 Aug 1990 | England | July 1937 | Old Hall Cottage, Chillies Lane, High Hurstwood, Uckfield, East Sussex, TN22 4AD |
| COX JOHNSON, Richard Mark RESIGNED | Director | | 30 Apr 1997 | | October 1934 | Cliff Field House, Dalby, York, North Yorkshire, YO60 6PF |
| DOBBIE, Scott Jamieson RESIGNED | Director | 04 Dec 2000 | 28 Jan 2005 | | July 1939 | Centurian House, 24 Monument Street, London, EC3R 8AQ |
| DURRANT, Anthony Richard Charles RESIGNED | Director | 30 Jun 2005 | 16 Dec 2020 | United Kingdom | August 1958 | 23, Lower Belgrave Street, London, SW1W 0NR |
| EMERSON, Ronald Victor RESIGNED | Director | 12 Mar 2001 | 28 Jan 2005 | United Kingdom | February 1947 | The Reeds, Remenham Lane, Remenham, Henley On Thames, Oxfordshire, RG9 3DA |
| FREEBORN, Edward RESIGNED | Director | 14 Apr 1997 | 24 Mar 1999 | | April 1949 | Little Hickmotts, Summerhill Road, Marden, Tonbridge, Kent, TN12 9DB |
| GIBB, Andrew George RESIGNED | Director | 18 Jan 2017 | 15 Apr 2021 | United Kingdom | October 1968 | 23, Lower Belgrave Street, London, SW1W 0NR, England |
| GRAY, Ian RESIGNED | Director | 18 Jan 1996 | 28 Jan 2005 | | November 1938 | 9 Royal Avenue, Chelsea, London, SW3 4QE |
| HAWKINGS, Neil RESIGNED | Director | 29 Sep 2005 | 30 Jun 2016 | United Kingdom | March 1961 | 23, Lower Belgrave Street, London, SW1W 0NR |
| HAYTHORNTHWAITE, Richard Neil RESIGNED | Director | 18 Jan 1996 | 30 Sep 1997 | England | December 1956 | 25 Ponsonby Terrace, London, SW1P 4PZ |
| HEATH, John Antony RESIGNED | Director | 01 Jul 1990 | 30 Jun 1997 | United Kingdom | June 1937 | Toddington Mill, Tewkesbury Road Toddington, Cheltenham, Gloucestershire, GL54 5DG |
| JAMIESON, Charles James Auldjo RESIGNED | Director | | 30 Jun 2005 | United Kingdom | September 1944 | Dipley Farm, Dipley Common, Hartley Wintney, Hants, RG27 8JS |
| JOHN, David Glyndwr, Sir RESIGNED | Director | 01 Mar 1998 | 28 Jan 2005 | United Kingdom | July 1938 | 12 Grosvenor Crescent Mews, London, SW1X 7EU |
| KEYNES, Stephen John RESIGNED | Director | | 31 Dec 1996 | United Kingdom | October 1927 | 14 Canonbury Park South, Islington, London, N1 2JJ |
| KIRK, Philip Andrew RESIGNED | Director | 15 Apr 2021 | 28 Feb 2022 | England | May 1966 | 23, Lower Belgrave Street, London, SW1W 0NR, England |
| KNOWLES, Michael Gordon RESIGNED | Director | 01 Jun 1998 | 24 Mar 1999 | | November 1944 | Mead Cottage 2 Haywain, Oxted, Surrey, RH8 9LL |
| KRANE, Alexander Lorentzen RESIGNED | Director | 15 Apr 2021 | 12 Dec 2024 | Norway | March 1976 | 151, Buckingham Palace Road, London, SW1W 9SZ, England |
| LAIDLAW, William Samuel Hugh RESIGNED | Director | 15 Feb 1995 | 20 Sep 2001 | United Kingdom | January 1956 | 133, Old Church Street, London, SW3 6EB |
| LANDER, John Hugh Russell RESIGNED | Director | 27 Feb 1995 | 18 Dec 1995 | England | February 1944 | Camelot, 26 The Island, Thames Ditton, Surrey, KT7 0SH |
| LASCELLES, Rupert John Orlando RESIGNED | Director | | 16 May 2001 | United Kingdom | February 1935 | The Old Station House, Hatherleigh, Okehampton, Devon, EX20 3LF |
| LIDDELL, Richard RESIGNED | Director | 03 Jul 2000 | 31 Jan 2003 | | November 1947 | 14 Birds Hill Road, Oxshott, Surrey, KT22 0NJ |
| LOCKETT, Simon Charles RESIGNED | Director | 30 Jun 2005 | 15 Aug 2014 | England | September 1964 | 23, Lower Belgrave Street, London, SW1W 0NR |
| LODGE, Andrew Geoffrey RESIGNED | Director | 15 Jun 2009 | 30 Jun 2015 | England | June 1956 | 23, Lower Belgrave Street, London, SW1W 0NR |
| LOWDEN, Stephen Jonathan RESIGNED | Director | 01 Jan 1997 | 01 Nov 2000 | | June 1959 | Sunnyside Cottage, Den Lane, Collier Street, Marden Kent, TN12 9FX |
| MANSOR, Mohamad Idris, Ybhg Dato' RESIGNED | Director | 15 Nov 1999 | 12 Sep 2003 | | November 1944 | No 29, Jalan 14/54, Petaling Jaya, 46100 Selangor Darul Ehsan, Malaysia |
| MARICAN, Mohd Hassan, Tan Sri RESIGNED | Director | 15 Nov 1999 | 05 Jun 2002 | Malaysia | October 1952 | 134 Jalan Teratai Taman Uda Jaya, Ampang 68000, Selangor, Malaysia |
| MARSDEN, Austin Philip RESIGNED | Director | 22 Jul 1991 | 14 Jun 1993 | | April 1956 | Burlington Garden 41 Wandle Road, London, SW17 7DL |
| MELZER, Arthur David RESIGNED | Director | | 31 Dec 1996 | | August 1932 | 24 Thorndon Hall, Ingrave, Brentwood, Essex, CM13 3RJ |
| MEW, Richard Martin RESIGNED | Director | 12 Mar 2002 | 16 Jun 2003 | | April 1956 | Plantation House, Ockham Road South, East Horsley, Surrey, KT24 6SG |
| O'DONNELL, Barry Joseph RESIGNED | Director | 21 Dec 2006 | 31 May 2009 | | January 1957 | 301, Jalan Kampong Chantek, Singapore, 587958, FOREIGN, Singapore |
| ORANGE, John Robert Wellwood RESIGNED | Director | 01 Feb 1997 | 28 Jan 2005 | United Kingdom | November 1942 | March House, Old School Road, Whepstead, Bury St Edmonds, Suffolk, Ip29 4ua, IP28 6LD |
| ORBELL, Gerald, Doctor RESIGNED | Director | 22 May 1992 | 10 Mar 1995 | England | February 1947 | 45 The Park, Great Bookham, Leatherhead, Surrey, KT23 3LN |
| RICKARD, Rachel Abigail RESIGNED | Director | 29 May 2015 | 18 Jan 2017 | England | March 1979 | 23, Lower Belgrave Street, London, SW1W 0NR, England |
| ROSE, Richard Andrew RESIGNED | Director | 01 Oct 2014 | 15 Apr 2021 | England | November 1972 | 23, Lower Belgrave Street, London, SW1W 0NR, England |
| SHAW, Roland Clark RESIGNED | Director | | 03 Aug 1994 | | October 1921 | 23 Lower Belgrave Street, London, SW1W 0NW |
| STEPHENS, Edwin Barrie RESIGNED | Director | 15 Nov 1994 | 01 Mar 1998 | | January 1928 | Fox Hollow, Larch Avenue, Sunningdale, Berkshire, SL5 0QB |
| SUTTIE, Laura Anne RESIGNED | Director | 12 Dec 2024 | 27 Apr 2026 | United Kingdom | December 1980 | 151, Buckingham Palace Road, London, SW1W 9SZ, England |
| URQUHART, Lawrence Mcallister RESIGNED | Director | | 27 Apr 1994 | | September 1935 | The Old School, Highclere, Newbury, Berks, GR15 9RH |
| VAN DER WELLE, John Alexander RESIGNED | Director | 24 Mar 1999 | 30 Jun 2005 | United Kingdom | May 1955 | Northlands 22 Sandpit Lane, St. Albans, Hertfordshire, AL1 4HL |
| WHEATON, Stuart Royston RESIGNED | Director | 09 Nov 2021 | 29 Sep 2023 | United Kingdom | September 1966 | 23, Lower Belgrave Street, London, SW1W 0NR, England |