| BRANSTON, Sean Richard Lawrence ACTIVE | Director | 12 Feb 2026 | | United Kingdom | September 1973 | 1, Park Row, Leeds, LS1 5AB, England |
| CLARKE, Rebecca ACTIVE | Director | 12 Feb 2026 | | United Kingdom | October 1983 | 1, Park Row, Leeds, LS1 5AB, England |
| POLSON, Niall David ACTIVE | Director | 12 Feb 2026 | | United Kingdom | August 1983 | 1, Park Row, Leeds, LS1 5AB, England |
| ANDREW, Louise RESIGNED | Secretary | 30 Apr 2009 | 31 Mar 2014 | | | 16, Colthill Road, Milltimber, Aberdeen, AB13 0EF |
| BYRNE, Anthony Joseph RESIGNED | Secretary | 28 Aug 2015 | 31 Dec 2021 | | | Kca Deutag Drilling Group Limited, Minto Drive, Altens Industrial Estate, Aberdeen, AB12 3LW, Scotland |
| BYRNE, Anthony Joseph RESIGNED | Secretary | 18 Nov 2014 | 19 Mar 2015 | | | Kca Deutag Drilling Group Limited, Minto Drive, Altens Industrial Estate, Aberdeen, AB12 3LW, Scotland |
| DONNELLY, Lawrence John Vincent RESIGNED | Secretary | 19 Mar 2015 | 28 Aug 2015 | | | Kca Deutag Drilling Limited, Minto Drive, Altens Industrial Estate, Aberdeen, AB12 3LW, Scotland |
| SCHWARTZ, Alan RESIGNED | Secretary | 29 Nov 2007 | 06 Feb 2009 | | | 15 Sunflower Drive, Saddle River, Nj 07458, Usa |
| THOMSON, Lynne RESIGNED | Secretary | 18 Apr 2014 | 18 Nov 2014 | | | Kca Deutag Drilling Limited, Minto Drive, Altens Industrial Estate, Aberdeen, Aberdeenshire, AB12 3LW, Scotland |
| TRUSEC LIMITED RESIGNED | Nominee Secretary | 06 Feb 2009 | 30 Apr 2009 | | | 2 Lambs Passage, London, EC1Y 8BB |
| TRUSEC LIMITED RESIGNED | Nominee Secretary | 21 Nov 2007 | 29 Nov 2007 | | | 2 Lambs Passage, London, EC1Y 8BB |
| AL MANSOORI, Abdulla Nasser Ahmed Huwaileel RESIGNED | Director | 10 Jul 2018 | 29 Apr 2020 | United Arab Emirates | June 1949 | Liwa Tower, Level 18, Capital Centre, Behind Exhibition Centre, Abu Dhabi, United Arab Emirates |
| AL QAHTANI, Salah Abdelhadi Abdullah, Sheikh RESIGNED | Director | 10 Jul 2018 | 29 Apr 2020 | Saudi Arabia | October 1969 | 1, Park Row, Leeds, LS1 5AB, England |
| AL-QAHTANI, Salah Abdulhadi RESIGNED | Director | 07 Jan 2021 | 16 Jan 2025 | Saudi Arabia | October 1969 | 1, Park Row, Leeds, LS1 5AB, England |
| BABCOCK, Benjamin James RESIGNED | Director | 09 Jan 2020 | 29 Apr 2020 | England | June 1967 | 82, Cornwall Gardens, Flat 1, London, SW7 4AZ, England |
| BELL, John Ruskin RESIGNED | Director | 16 Jan 2025 | 12 Feb 2026 | United Kingdom | September 1970 | 1, Park Row, Leeds, LS1 5AB, England |
| BIALAS, Edward Todd RESIGNED | Director | 31 Mar 2008 | 28 Sep 2010 | Usa | August 1979 | 3, Highview Avenue, Old Greenwich, Ct 06870, United States |
| DEFELICE, Alexander, Director RESIGNED | Director | 31 Mar 2011 | 28 Jul 2014 | Usa Connecticut | March 1979 | Blackrock, Inc., 55 East 52nd Street, 6th Floor, New York, New York 10055, Usa |
| DURKIN, Angela RESIGNED | Director | 07 Jan 2021 | 01 Feb 2024 | Denmark | November 1967 | 1, Park Row, Leeds, LS1 5AB, England |
| EDWARDS, Joseph Robert RESIGNED | Director | 29 Nov 2007 | 08 Nov 2010 | Usa | October 1972 | 3 Hill Road, Greenwich, Ct 068630, Usa |
| EHRET, Thomas Michel Ernest RESIGNED | Director | 07 Jan 2021 | 16 Jan 2025 | France | March 1952 | 1, Park Row, Leeds, LS1 5AB, England |
| ELKHOURY, Joseph RESIGNED | Director | 01 Jul 2019 | 16 Jan 2025 | United Kingdom | January 1970 | 1, Park Row, Leeds, LS1 5AB, England |
| ELLIS, Robert Keith RESIGNED | Director | 21 Feb 2013 | 21 Dec 2020 | England | September 1951 | 1, Park Row, Leeds, LS1 5AB, England |
| ELLIS, Robert Keith RESIGNED | Director | 29 Sep 2010 | 31 Mar 2011 | England | September 1951 | 27, Holmesdale Road, Teddington, Middlesex, TW11 9LJ, England |
| ENSALL, John James RESIGNED | Director | 06 May 2020 | 21 Dec 2020 | United Kingdom | March 1959 | 1, Park Row, Leeds, LS1 5AB, England |
| FARZAD, Vahid RESIGNED | Director | 11 May 2016 | 29 Apr 2020 | England | June 1976 | 1, Park Row, Leeds, LS1 5AB, England |
| GILCHRIST, Neil Porteous RESIGNED | Director | 12 May 2014 | 16 Jan 2025 | United Kingdom | August 1967 | Group Headquarters, Bankhead Drive, City South Office Park, Portlethen, Aberdeen, AB12 4XX, Scotland |
| HALSTED, John Combothekras RESIGNED | Director | 31 Mar 2011 | 16 Sep 2019 | United Kingdom | November 1964 | 25, Park Lane, London, W1K 1RA, United Kingdom |
| HARTLEY, Neil John RESIGNED | Director | 29 Nov 2007 | 08 Nov 2010 | Scotland | September 1965 | Sunnyside Of Collonach, Strachan, Banchory, Kincardineshire, AB31 6NL |
| HICKEY, Patrick Hunt, Senior Vice President RESIGNED | Director | 31 Mar 2011 | 11 May 2016 | Usa Texas | February 1962 | 333 Clay Street, Houston, Texas Tx77002, Usa |
| HUGHES, Christopher John RESIGNED | Director | 30 Sep 2010 | 31 Mar 2011 | United Kingdom | March 1949 | Talbot Hughes Mckillop Llp, 6 Snow Hill, London, EC1A 2AY, England |
| KNASTER, Alexander RESIGNED | Director | 31 Mar 2011 | 09 May 2016 | United Kingdom | February 1959 | 25, Park Lane, London, W1K 1RA, Uk |
| LODGE, Ted S RESIGNED | Director | 31 Mar 2011 | 21 May 2013 | United States | May 1956 | Goldentree Asset Managemen, Lp,300, Park Avenue, 20th Floor, New York, New York 10022, Usa |
| LONNQVIST, Markku Juhani RESIGNED | Director | 09 May 2016 | 29 Apr 2020 | England | April 1972 | 25, Park Lane, London, W1K 1RA, England |
| LONNQVIST, Markku Juhani RESIGNED | Director | 31 Mar 2011 | 01 Nov 2011 | England | April 1972 | 25, Park Lane, London, W1K 1RA, Uk |
| LYNE, Rebecca Jane RESIGNED | Director | 21 Nov 2007 | 29 Nov 2007 | | November 1981 | Flat 49 London House, 172 Aldersgate Street, London, EC1A 4HU |
| MCKAY, Norrie Andrew RESIGNED | Director | 01 Nov 2011 | 30 Jun 2019 | Dubai, United Arab Emirates | August 1959 | Villa 9, Cluster 35, Jumeirah Islands, Dubai, United Arab Emirates |
| MERRITT, Dean Edward John RESIGNED | Director | 21 May 2013 | 29 Apr 2020 | United Kingdom | January 1967 | Westlands Cottage, Padhams Green Road, Ingatestone, Essex, CM4 9NY, England |
| MILNE, Peter John RESIGNED | Director | 16 Apr 2008 | 11 Aug 2010 | Scotland | May 1954 | Craigwood, Blairs, Aberdeen, AB12 5YT |
| MONIR, Nicole Frances RESIGNED | Director | 21 Nov 2007 | 21 Nov 2007 | United Kingdom | May 1967 | 92 Crosslands, Caddington, Luton, Bedfordshire, LU1 4ER |
| MOUFARREJ, Marwan RESIGNED | Director | 07 Jan 2021 | 16 Jan 2025 | United Arab Emirates | November 1961 | 1, Park Row, Leeds, LS1 5AB, England |
| PORTER, Jay Lee RESIGNED | Director | 16 Jan 2025 | 12 Feb 2026 | Scotland | December 1984 | 1, Park Row, Leeds, LS1 5AB, England |
| PRINGLE, Keith James RESIGNED | Director | 11 Dec 2007 | 08 Dec 2009 | Uk | February 1959 | The Nelmes, Munsley, Ledbury, Herefordshire, HR8 2SH |
| RAMSAY, Alaina RESIGNED | Director | 16 Jan 2025 | 12 Feb 2026 | Scotland | March 1983 | 1, Park Row, Leeds, LS1 5AB, England |
| SCHWARTZ, Alan RESIGNED | Director | 29 Nov 2007 | 28 Sep 2010 | Usa | April 1961 | 15 Sunflower Drive, Saddle River, Nj 07458, Usa |
| SUMMERS, Timothy David RESIGNED | Director | 14 Jan 2010 | 31 Mar 2011 | Switzerland | June 1967 | Dreikonigstrasse 31a, Zurich, 8002, Switzerland |
| THOMAS, Peter Neil RESIGNED | Director | 07 Jan 2021 | 16 Jan 2025 | United Kingdom | April 1962 | 1, Park Row, Leeds, LS1 5AB, England |
| TRUCANO, David P. RESIGNED | Director | 28 Jul 2014 | 29 Apr 2020 | United States | September 1970 | Kca Deutag Drilling Limited, Minto Drive, Altens Industrial Estate, Aberdeen, AB12 3LW, Scotland |
| ZORALIOGLU, Selahattin RESIGNED | Director | 31 Mar 2011 | 21 Feb 2013 | Uk | May 1977 | 25, Park Lane, London, W1K 1RA, Uk |
| TRUSEC LIMITED RESIGNED | Nominee Director | 21 Nov 2007 | 29 Nov 2007 | | | 2 Lambs Passage, London, EC1Y 8BB |