| CLIFTON, Scot ACTIVE | Secretary | 01 Jul 2009 | | | | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN |
| CLIFTON, Scot ACTIVE | Director | 01 Jul 2009 | | Scotland | November 1966 | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN |
| MEKKAWY, Wael ACTIVE | Director | 01 Feb 2020 | | Scotland | May 1974 | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN |
| USMAN, Shaikh ACTIVE | Director | 28 Feb 2020 | | United Kingdom | March 1972 | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN |
| BROWN, Graham Christopher RESIGNED | Secretary | 26 May 2000 | 17 Aug 2000 | | | Flat 4, 82 Belsize Park Gardens Hampstead, London, NW3 4NG |
| CRAWLEY, Peter John RESIGNED | Secretary | 31 Jul 2003 | 30 Jun 2008 | | | Deveron Facility, Howe Moss Place, Dyce, Aberdeen, AB21 0GS |
| DAVIS, Richard Paul RESIGNED | Secretary | | 25 Jan 1994 | | | Ambersham House, Estuary Crescent Shotley Gate, Ipswich, Suffolk, IP9 2QA |
| DEERING, John Edward RESIGNED | Secretary | 30 Jun 2008 | 01 Jul 2009 | | | 129, Blenheim Place, Aberdeen, Aberdeenshire, AB25 2DL |
| FARLEY, Andrew Daniel RESIGNED | Secretary | 16 Dec 1998 | 26 May 2000 | | | Flat 1 22 Harcourt Terrace, London, SW10 9JR |
| FLINDERS, Harold Derek RESIGNED | Secretary | 17 Aug 2000 | 03 Sep 2002 | | | 23 Thetford Road, New Malden, Surrey, KT3 5DN |
| GARRETT, Anthony John RESIGNED | Secretary | | 07 Jun 1990 | | | 8 Grasmere Close, Guildford, Surrey, GU1 2TG |
| GLYNN, Andrew David RESIGNED | Secretary | 28 Jul 1997 | 16 Dec 1998 | | | 44 Holburn Road, Aberdeen, AB10 6ET |
| LINDSELL, Philip Edmund RESIGNED | Secretary | | 20 Apr 1995 | | | Southside Cottage, Stone Lane Axford, Marlborough, Wiltshire, SN8 2EY |
| ORR, Raymond William RESIGNED | Secretary | 21 Apr 1995 | 07 Oct 1997 | | | 19 Lawson Avenue, Banchory, Kincardineshire, AB31 3TW |
| TOCHER, Judith Robertson RESIGNED | Secretary | 03 Sep 2002 | 31 Jul 2003 | | | Blacktop House, Blacktop, Kingswells, Aberdeen, AB15 8QJ |
| WILLIAMS, Michael James John RESIGNED | Secretary | 28 Jul 1997 | 30 Oct 1998 | | | West Steading, Mains Of Inverey, Banchory, Kincardineshire, AB3113NY |
| BETTS, Matthew RESIGNED | Director | 01 Jan 2014 | 08 Dec 2017 | United Kingdom | January 1968 | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN |
| BOWYER, Michael Lewis RESIGNED | Director | 30 Jun 2004 | 01 Jul 2009 | | October 1951 | Deveron Facility, Howe Moss Place, Dyce, Aberdeen, AB21 0GS |
| BUCHANAN, Alasdair Ian RESIGNED | Director | 01 Aug 2011 | 13 Apr 2012 | Scotland | November 1960 | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN, Scotland |
| CHAPMAN, Gordon Robin RESIGNED | Director | 14 May 1999 | 19 Jul 2000 | England | April 1950 | Pen Y Bryn Upper Raby Road, Neston, Cheshire, CH64 7TY |
| CRAVEN WALKER, Antony RESIGNED | Director | 30 Jan 1989 | 20 Apr 1995 | | January 1943 | Square Du Val De La Cambre 3, Bruxelles, 1050, Belgium |
| DENMAN, Henry Wynne RESIGNED | Director | 30 Jan 1989 | 20 Apr 1995 | | July 1929 | The Penthouse Old Avenue, St Georges Hill, Weybridge, Surrey, KT13 0QB |
| FITZGERALD, Mel Oliver RESIGNED | Director | 19 Jul 2000 | 30 Jun 2004 | United Kingdom/England | November 1950 | 3 Marlyns Drive, Burpham, Guildford, Surrey, GU4 7LS |
| FORD, Gregory Brent RESIGNED | Director | 19 Aug 1997 | 10 Jun 1999 | | April 1953 | 7 Prospect Hill Road, Bielside, Aberdeen, AB15 9AN |
| HEATH, Stuart Matthew RESIGNED | Director | 18 Nov 2012 | 14 May 2013 | United Arab Emirates | April 1959 | 8th Floor Convention Tower, Beside Novotel Hotel Trade Centre, PO BOX 3111, Dubai, United Arab Emirates |
| HERD, Ian Riddoch Williamson RESIGNED | Director | 19 Aug 1997 | 09 Nov 1998 | | March 1958 | 49 Abbotswell Drive, Aberdeen, AB12 5QP |
| HOUSTON, John Joseph RESIGNED | Director | 03 Sep 2002 | 27 Apr 2007 | | August 1964 | Deveron Facility, Howe Moss Place, Dyce, Aberdeen, AB21 0GS |
| JAMES, David Noel RESIGNED | Director | | 24 May 1990 | | December 1937 | Suite 531 Premier House, 10 Greycoat Place, London, SW1P 1SB |
| JOHNSTON, David Alexander RESIGNED | Director | 24 Oct 2007 | 18 Nov 2012 | United Kingdom | March 1971 | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN |
| KALBORG, Ted Gunnar Christer RESIGNED | Director | | 20 Apr 1995 | England | March 1951 | 22 Pelham Crescent, London, SW7 2NR |
| LINDSELL, Philip Edmund RESIGNED | Director | 26 Sep 1990 | 20 Apr 1995 | | November 1953 | Southside Cottage, Stone Lane Axford, Marlborough, Wiltshire, SN8 2EY |
| MAHON, Barry Anthony RESIGNED | Director | 31 Jul 2003 | 30 Jun 2004 | | September 1962 | 133 North Deeside Road, Milltimber, Aberdeen, AB13 0JS |
| MAIR, John Arthur RESIGNED | Director | 19 Aug 1997 | 09 Nov 1998 | United Kingdom | May 1957 | 9a Ferryhill Place, Aberdeen, AB11 7SE |
| MATHEW, Thomas Kuzhuvommannil RESIGNED | Director | 28 Jan 2014 | 28 Feb 2020 | United Arab Emirates | May 1963 | 14th Floor, Citibank Tower, Al-Qutayat Street, Dubai, United Arab Emirates |
| METSON, Peter Alexander RESIGNED | Director | 20 Apr 1995 | 19 Oct 1995 | | June 1949 | Mayfield, Malcolm Road Peterculter, Aberdeen, Grampian, AB1 0NX |
| MLADENKA, David RESIGNED | Director | 13 Apr 2012 | 01 Jan 2014 | United Kingdom | December 1960 | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN |
| MORRIS, James Richard Samuel, Sir RESIGNED | Director | 04 Jul 1994 | 20 Apr 1995 | | November 1925 | Breadsall Manor, Breadsall Village, Derby, DE21 5LL |
| NEWBURY, Herbert Gary RESIGNED | Director | 20 Apr 1995 | 23 Feb 1996 | | April 1941 | Dalhebity Cottage, Baillieswells Road Bieldside, Aberdeen, Scotland, AB1 9BQ |
| NICHOLSON, Stephen John RESIGNED | Director | 20 Apr 1995 | 14 Mar 2006 | | February 1948 | Hill Park Court, Springfield Drive, Leatherhead, Surrey, KT22 7NL |
| ORR, Raymond William RESIGNED | Director | 20 Apr 1995 | 31 Jul 1997 | | April 1947 | 19 Lawson Avenue, Banchory, Kincardineshire, AB31 3TW |
| PARKER, Philip Hull RESIGNED | Director | 20 Apr 1990 | 20 Apr 1995 | | February 1946 | 1 Quarry Lane, Lower Shiplake, Henley, Oxfordshire, RG9 3JW |
| PAVER, Gary Neil RESIGNED | Director | 30 Jun 2004 | 24 Oct 2007 | | May 1967 | Deveron Facility, Howe Moss Place, Dyce, Aberdeen, AB21 0GS |
| PETERSEN, Jeffrey Charles, Sir RESIGNED | Director | 30 Jan 1989 | 30 Sep 1994 | | July 1920 | 32 Longmoore Street, London, SW1V 1JF |
| RISK, Stewart RESIGNED | Director | 15 Dec 1995 | 30 Oct 1998 | Scotland | September 1950 | 2 Oldfold Place, Milltimber, Aberdeen, Aberdeenshire, AB1 0JU |
| SEATON, Simon Derek RESIGNED | Director | 05 Jan 2009 | 01 Aug 2011 | Scotland | March 1968 | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN |
| SMART, Edwin Gerald RESIGNED | Director | 14 May 2013 | 19 Aug 2013 | England | September 1965 | Halliburton House, Howe Moss Crescent, Kirkhill Industrial Estate, Dyce, Aberdeen, AB21 0GN, Scotland |
| SMITH, John RESIGNED | Director | 21 Jun 1999 | 03 Sep 2002 | | September 1956 | 41 Pittengullies Brae, Peterculter, Aberdeen, Aberdeenshire, AB14 0QU |
| VORENKAMP, Mark Lewis RESIGNED | Director | 15 Dec 1995 | 09 Feb 1996 | United Kingdom | September 1949 | 24 Harlaw Road, Aberdeen, Aberdeenshire, AB15 4YY |
| WHITE, Martin Robert RESIGNED | Director | 08 Dec 2017 | 31 Dec 2021 | United Kingdom | September 1973 | Halliburton House, Howe Moss Crescent, Dyce, Aberdeen, AB21 0GN, United Kingdom |
| WYATT, Stephen John RESIGNED | Director | 19 Aug 1997 | 14 Apr 1999 | | September 1955 | 81 Devonshire Road, Aberdeen, AB10 6XP |