| MA, Bingying ACTIVE | Secretary | 30 May 2022 | | | | Cedar Court, Guildford Road, Fetcham, Leatherhead, KT22 9RX, England |
| HOPPE, Arne, Dr ACTIVE | Director | 01 Sep 2026 | | Germany | March 1979 | Haltermann Carless, Refinery Road, Harwich, CO12 4SS, England |
| MA, Bingying ACTIVE | Director | 01 Sep 2023 | | England | April 1983 | Haltermann Carless, Refinery Road, Harwich, CO12 4SS, England |
| MORSBACH, Eva Irmtrud, Dr ACTIVE | Director | 01 Sep 2026 | | Germany | June 1987 | Haltermann Carless, Refinery Road, Harwich, CO12 4SS, England |
| BUTLER, Roger Alun RESIGNED | Secretary | 01 Feb 2003 | 15 Apr 2013 | | | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX |
| GRIFFITHS, Veronica Claire RESIGNED | Secretary | | 06 Jun 1996 | | | 60 Broadwalk, Winchmore Hill, London, N21 3BX |
| HIGGS, Christopher Michael RESIGNED | Secretary | 20 Jul 2017 | 30 May 2022 | | | Cedar Court, Guildford Road, Fetcham, Leatherhead, KT22 9RX, England |
| MARTIN, Mark Rae RESIGNED | Secretary | 07 Sep 2001 | 31 Dec 2001 | | | "Tykes", Grosvenor Road, Orsett, Essex, RM16 3BT |
| MARTIN, Mark Rae RESIGNED | Secretary | 18 May 2000 | 14 Dec 2000 | | | "Tykes", Grosvenor Road, Orsett, Essex, RM16 3BT |
| ODWYER, Richard RESIGNED | Secretary | 01 Jan 2002 | 01 Feb 2003 | | | 10 Cheyne Hill, Surbiton, Surrey, KT5 8BN |
| SAGAR, Elizabeth Anne RESIGNED | Secretary | 06 Jun 1996 | 18 May 2000 | | | 20 Etheldene Avenue, London, N10 3QH, England |
| SIMMONS, Graham James RESIGNED | Secretary | 14 Dec 2000 | 07 Sep 2001 | | | Merrylands, Polesden Lane Ripley, Woking, Surrey, GU23 6DX |
| WRIGHT, Nigel John RESIGNED | Secretary | 15 Apr 2013 | 20 Jul 2017 | | | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX, United Kingdom |
| ALBARDIAZ GONZALEZ, Arturo, Senor RESIGNED | Director | 09 May 1996 | 14 Dec 2000 | | September 1943 | Diegodeleon 69, 3rd Floor A, Madrid, Spain |
| ANDERIZ CEBRIAN, Francisco RESIGNED | Director | | 15 Dec 1993 | | May 1940 | Jazmin 95, 1a El Soto 28017 Madrid, Spain |
| BARCLAY, David RESIGNED | Director | 04 Jan 2011 | 30 Aug 2013 | England | June 1954 | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX |
| BLASCO, Fernando RESIGNED | Director | 22 Jul 1993 | 25 Jun 1996 | | November 1948 | O` Donnell - 6, Madrid, 28009, Spain |
| BUTLER, Roger Alun RESIGNED | Director | 01 Feb 2003 | 15 Apr 2013 | United Kingdom | May 1966 | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX |
| CALBACHO, Fernando RESIGNED | Director | 22 Jul 1993 | 21 Aug 1995 | | May 1961 | Nuria 80, Madrid, 28034, Spain |
| CROSS, William Anthony RESIGNED | Director | | 14 Dec 2000 | England | July 1948 | Tall Fire, 134 Oakhill Road, Sevenoaks, Kent, TN13 1NX |
| DASENT, Richard Winston Hastings RESIGNED | Director | | 22 Oct 1993 | | October 1941 | 13 Oakley Dell, Guildford, Surrey, GU4 7HJ |
| DIAZ, Antonio Carlos RESIGNED | Director | 09 May 1996 | 29 Jul 1999 | | July 1950 | Neptuno No 4, Pozuelo De Alarcon, Madrid, 282244 |
| EMERSON, Roy Scott RESIGNED | Director | | 02 Feb 1996 | | November 1939 | 16a Villa Road, Stanway, Colchester, Essex, CO3 5RH |
| FANNON, Vincent Joseph RESIGNED | Director | 04 Nov 2003 | 18 Nov 2004 | | August 1959 | 10 Birch Close, Brandon Groves, South Ockendon, Essex, RM15 6XD |
| FRIESENHAHN, Peter RESIGNED | Director | 01 Feb 2024 | 31 Aug 2026 | Germany | June 1971 | 3, Edmund Rumpler Strabe, Frankfurt Am Main, 60549, Germany |
| GEMSKI, Paul RESIGNED | Director | 10 Sep 2003 | 15 Apr 2013 | United Kingdom | January 1958 | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX |
| GREEN, Graham John RESIGNED | Director | 02 Dec 2002 | 04 Nov 2003 | | August 1946 | 3 The Hawthorns, Woodbridge Road, Birmingham, West Midlands, B13 9DY |
| HAITH, Stephen Albert RESIGNED | Director | 04 Nov 2003 | 31 Dec 2010 | United Kingdom | May 1963 | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX |
| HERNANDEZ ESPINOSA, Jacobo RESIGNED | Director | 22 Jul 1993 | 14 Dec 2000 | | October 1949 | C/Puerto De Canencia No 10 3od, 280220 Majadahonda, Madrid, FOREIGN, Spain |
| HIGGS, Christopher Michael RESIGNED | Director | 02 Mar 2017 | 30 May 2022 | England | May 1956 | Grove House, Guildford Road, Leatherhead, Surrey, KT22 9DF, England |
| HORTON, Colin Edward RESIGNED | Director | 18 Dec 2000 | 11 Jun 2003 | England | January 1950 | 64 Balliol Avenue, Highams Park, London, E4 6LY |
| HUTCHINSON, Chris John Rowland RESIGNED | Director | 01 Apr 2019 | 08 Mar 2024 | England | January 1972 | Cedar Court, Guildford Road, Fetcham, Leatherhead, KT22 9RX, England |
| JAMES, Neil RESIGNED | Director | 23 Dec 2004 | 15 Apr 2013 | Uk | May 1967 | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX |
| KERNS, Peter William RESIGNED | Director | 14 Aug 2003 | 02 Jun 2008 | | January 1950 | 12 Fenby Close, Horsham, West Sussex, RH13 6RP |
| KRUPPER, Hans Henrik RESIGNED | Director | 01 Apr 2019 | 31 Aug 2023 | Germany | April 1971 | Cedar Court, Guildford Road, Fetcham, Leatherhead, KT22 9RX, England |
| LITTLE, David Terence RESIGNED | Director | 18 Dec 2000 | 24 Sep 2008 | England | December 1947 | 4 The Copse, Cranleigh, Surrey, GU6 7NU |
| LOPEZ, Demetrio RESIGNED | Director | 22 Jul 1993 | 24 Feb 1994 | | July 1934 | Paseo Pintor, Rosales 30, Madrid, 28008, Spain |
| LUBBOCK, David Warwick Andrew RESIGNED | Director | 14 Dec 2000 | 11 Sep 2002 | United Kingdom | April 1959 | Lawbrook Lawbrook Lane, Gomshall, Guildford, Surrey, GU5 9QN |
| MARTIN, Mark Rae RESIGNED | Director | 01 Jun 2001 | 31 Dec 2001 | | August 1951 | "Tykes", Grosvenor Road, Orsett, Essex, RM16 3BT |
| MARTIN, Mark Rae RESIGNED | Director | | 14 Dec 2000 | | August 1951 | "Tykes", Grosvenor Road, Orsett, Essex, RM16 3BT |
| MAYORAL DE LOZOYA, Carmelo RESIGNED | Director | 29 Jul 1999 | 14 Dec 2000 | | November 1950 | Miguel Servet,5,28224 Pozuelo De, Alarcon, Madrid, FOREIGN, Spain |
| MCCLELLAND, Glenn RESIGNED | Director | 02 Mar 2001 | 06 Jun 2003 | | January 1957 | 11 High Meadows, Great Dunmow, Essex, CM6 1UG |
| ODWYER, Richard RESIGNED | Director | 01 Jan 2002 | 21 Mar 2003 | | March 1971 | 10 Cheyne Hill, Surbiton, Surrey, KT5 8BN |
| PYE, Nicholas Brian RESIGNED | Director | 15 Apr 2013 | 18 Jul 2014 | United Kingdom | March 1974 | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX, United Kingdom |
| SIMMONS, Graham James RESIGNED | Director | 14 Dec 2000 | 07 Sep 2001 | England | July 1959 | Merrylands, Polesden Lane Ripley, Woking, Surrey, GU23 6DX |
| STONEHOUSE, Duncan Paul RESIGNED | Director | 15 Apr 2013 | 01 Apr 2019 | United Kingdom | August 1970 | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX, United Kingdom |
| STUBBE, Peter RESIGNED | Director | 01 Sep 2023 | 31 Jan 2024 | Germany | May 1967 | Gateway Gardens, Edmund Rumpler Str 3, Frankfurt Am Main, 60549, Germany |
| WATKINS, William Niall, Dr RESIGNED | Director | 07 Nov 2005 | 20 Jul 2012 | United Kingdom | September 1960 | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX |
| WINDLE, Denis RESIGNED | Director | | 14 Dec 2000 | | January 1942 | Abbots Hill, 3 Austenwood Close, High Wycombe, Buckinghamshire, HP11 1PT |
| WISEMAN, Kenneth John RESIGNED | Director | 18 Dec 2000 | 21 Nov 2002 | | October 1945 | 72 Castellan Avenue, Gidea Park, Essex, RM2 6ED |
| WISEMAN, Kenneth John RESIGNED | Director | | 31 Oct 1995 | | October 1945 | 72 Castellan Avenue, Gidea Park, Essex, RM2 6ED |
| WRIGHT, Nigel John RESIGNED | Director | 15 Apr 2013 | 20 Jul 2017 | United Kingdom | November 1958 | Cedar Court, Guildford Road, Leatherhead, Surrey, KT22 9RX, United Kingdom |
| WYATT, James Peter RESIGNED | Director | 08 Mar 2024 | 31 Aug 2026 | England | October 1985 | Cedar Court, Guildford Road, Fetcham, Leatherhead, KT22 9RX, England |
| REPSOL EXPLORATION (UK) LIMITED RESIGNED | Director | | 13 Dec 1993 | | | 5 Princes Gate, London, SW7 1QJ |
| REPSOL OIL INTERNATIONAL LIMITED RESIGNED | Director | | 15 Oct 1993 | | | 20 Grenville Street, St Helier, Jersey, CHANNEL, Channel Islands |