| DUNLOP, Lorraine Amanda ACTIVE | Secretary | 19 Dec 2018 | | | | 2 High Street, Nailsea, Bristol, BS48 1BS |
| BALDINI, Valentina ACTIVE | Director | 09 Jan 2023 | | United Kingdom | January 1979 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| BARR, Andrew John ACTIVE | Director | 09 May 2024 | | Scotland | January 1984 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| DI GIAMBATTISTA, Domenico ACTIVE | Director | 03 Feb 2021 | | England | August 1978 | Wellstream House, Wincomblee Road, Newcastle Upon Tyne, NE6 3PF, United Kingdom |
| FIRMANI, David Vincent ACTIVE | Director | 10 Jun 2024 | | United Kingdom | May 1971 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| WRIGHT, Daniel James ACTIVE | Director | 30 May 2025 | | England | January 1979 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| DUNBAR, Joanna Carolyn Pyper RESIGNED | Secretary | 15 Sep 2006 | 20 May 2011 | | | 205, Countesswells Road, Aberdeen, Aberdeenshire, AB15 7RD |
| REED SMITH CORPORATE SERVICES LIMITED RESIGNED | Secretary | 27 Apr 1992 | 15 Sep 2006 | | | Minerva House, 5 Montague Close, London, SE1 9BB |
| APPS, Conrad Joseph RESIGNED | Director | 29 Nov 2011 | 03 Oct 2014 | United Kingdom | March 1968 | Silverburn House, Claymore Drive, Bridge Of Don, Aberdeen, Aberdeenshire, AB23 8GD, United Kingdom |
| AQUILLANO, Samuel Richard RESIGNED | Director | 13 Mar 2009 | 20 Apr 2012 | | November 1957 | 3555 Langley Oaks Ct. Se, Marietta, 30067 Georgia, United States |
| ARNISON, Dean RESIGNED | Director | 01 Oct 2013 | 11 Oct 2022 | United Kingdom | November 1964 | 2, High Street, Nailsea, Bristol, Somerset & Avon, BS48 1BS, United Kingdom |
| BUTCHER, Adam Paul RESIGNED | Director | 21 Dec 2022 | 24 May 2024 | England | October 1976 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| CAMPBELL, Ian Neil RESIGNED | Director | | 11 Oct 2002 | | January 1947 | Old Mill Of Collieston, Ellon, Aberdeenshire, AB41 8RG |
| CAMPORI, Antonio RESIGNED | Director | 20 Apr 2012 | 05 Nov 2013 | United Kingdom | December 1965 | Silverburn House, Claymore Drive, Bridge Of Don, Aberdeen, Aberdeenshire, AB23 8GD, United Kingdom |
| CARMICHAEL, John Angus RESIGNED | Director | 21 Nov 2002 | 08 Jul 2004 | | July 1948 | 3 The Cottgae, Kettocks Mill, Bridge Of Don, Aberdeen, AB2 8WR |
| CARMICHAEL, John Angus RESIGNED | Director | | 07 Jun 1996 | | July 1948 | 3 The Cottgae, Kettocks Mill, Bridge Of Don, Aberdeen, AB2 8WR |
| CHAMBAULT, Romain Pierre-Jacques Marie RESIGNED | Director | 08 Feb 2022 | 20 Mar 2025 | Scotland | December 1978 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| CHASTAIN, Terence Daniel RESIGNED | Director | | 31 May 1993 | | July 1939 | 62 Lochside Road, Bridge Of Don, Aberdeen, Aberdeenshire, AB23 8QW |
| CHICHESTER, Carole Audrey RESIGNED | Director | 27 Sep 2017 | 02 Dec 2019 | United States | June 1969 | 17015, Aldine Westfield Road, Houston, Texas, 77073, United States |
| CHRISTIE, Roderick Angus RESIGNED | Director | 20 Apr 2012 | 11 Jan 2016 | United Kingdom | April 1962 | Silverburn House, Claymore Drive, Bridge Of Don, Aberdeen, Aberdeenshire, AB23 8GD, United Kingdom |
| CORBIN, Matthew William John RESIGNED | Director | 04 Jan 2008 | 15 Dec 2011 | United Kingdom | October 1973 | 18 Irvine Place, Aberdeen, Aberdeenshire, AB10 6HB |
| COX, Stephen Robert RESIGNED | Director | 01 Sep 2009 | 17 May 2010 | | June 1977 | 1, Cairn Wynd, Inverurie, Aberdeenshire, AB51 5HQ |
| DEIGHAN, Colm Martin RESIGNED | Director | 02 Dec 2014 | 24 Mar 2016 | United Kingdom | January 1970 | Silverburn House, Claymore Drive, Bridge Of Don, Aberdeen, Aberdeen City, AB23 8GD, United Kingdom |
| DUNN, Nicholas Alexander RESIGNED | Director | 25 Jul 2013 | 13 Nov 2017 | United Kingdom | December 1973 | Silverburn House, Claymore Drive, Bridge Of Don, Aberdeen, Aberdeenshire, AB23 8GD, United Kingdom |
| GILLIES, Graham RESIGNED | Director | 30 Mar 2016 | 11 Apr 2019 | United Kingdom | July 1975 | 2630 The Quadrant, Aztec West, Bristol, South Gloucestershire, BS32 4GQ |
| GOODE, Peter Allan RESIGNED | Director | 01 Dec 2004 | 23 Feb 2007 | | January 1957 | 11 St John's Wood Road, London, NW8 8RB |
| GRIERSON, Donald Kenneth RESIGNED | Director | 02 Oct 2002 | 01 Dec 2004 | | October 1934 | Four-Leaf Towers, 5110 San Felipe Unit 92, Houston, Texas 77056, United States Of America |
| GRIERSON, Donald Kenneth RESIGNED | Director | 31 Jul 1992 | 14 Mar 2001 | | October 1934 | 1111 Bering 1201, Houston, Texas, 77057, Usa |
| HARGRAVES, Peter RESIGNED | Director | 30 Mar 2016 | 21 Dec 2017 | United Kingdom | April 1976 | 2, High Street, Nailsea, North Somerset, BS48 1BS, United Kingdom |
| HEPPENSTALL, Bruce Michael Amos RESIGNED | Director | 04 Aug 2014 | 10 Jul 2015 | United Kingdom | May 1970 | Wellstream House, Wincomblee Road, Walker Riverside, Newcastle Upon Tyne, Tyne & Wear, NE6 3PF, United Kingdom |
| HOFFMANN, Stephanie RESIGNED | Director | 17 May 2010 | 29 Nov 2011 | Scotland | December 1971 | Silverburn House, Claymore Drive, Aberdeen, Aberdeenshire, AB23 8GD |
| HOUSTON, John Joseph RESIGNED | Director | 16 Jul 2008 | 31 Aug 2009 | Scotland | August 1964 | 3 Kinmundy Avenue, Westhill, Aberdeenshire, AB32 6TG |
| JACKSON, Jamere RESIGNED | Director | 25 Jul 2013 | 05 Mar 2014 | United States Of America | February 1969 | 4424 West Sam Houston Parkway, North Westway 2, Houston, Texas 77041-82, United States Of America |
| JUSTISS, David Russell RESIGNED | Director | 07 Oct 2015 | 30 Apr 2019 | United Kingdom | December 1976 | Wellstream House, Wincomblee Road, Walker Riverside, Newcastle Upon Tyne, Tyne And Wear, NE6 3PF, United Kingdom |
| LAGI, Alessandro RESIGNED | Director | 08 Feb 2022 | 08 Jul 2022 | England | September 1975 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| LAMONT, David Turch RESIGNED | Director | 14 Mar 2005 | 04 Jan 2008 | United Kingdom | August 1960 | 466 Unthank Road, Norwich, Norfolk, NR4 7QJ |
| LAMONT, David Turch RESIGNED | Director | 01 Oct 2003 | 08 Jul 2004 | | August 1960 | The Grey House, Yarmouth Road, Ormebury St Margaret, Norfolk, NR29 3QB |
| LARSSEN, Davis Marc RESIGNED | Director | 01 Dec 2004 | 31 Jul 2008 | United Kingdom | October 1971 | 8 Springdale Road, Bieldside, Aberdeen, Aberdeenshire, AB15 9FA |
| LINKE, Benjamin RESIGNED | Director | 27 Nov 2017 | 02 Jul 2021 | Scotland | September 1983 | Stoneywood Park North, Dyce, Aberdeen, AB21 7EA, Scotland |
| MACHUCA, Felix RESIGNED | Director | 12 Jun 2001 | 01 Dec 2004 | | October 1948 | 14 El Dorado, Friendswood, Texas Tx 77546, Usa |
| MASON, Philip Stewart RESIGNED | Director | 20 Apr 2012 | 18 Jul 2013 | United Kingdom | December 1968 | Silverburn House, Claymore Drive, Bridge Of Don, Aberdeen, Aberdeenshire, AB23 8GD, United Kingdom |
| MASON, Philip Stewart RESIGNED | Director | 23 Feb 2007 | 31 Jan 2008 | | December 1968 | 43 Dorothea Lane, Sugar Land, Texas 77479, Unired States |
| MATUCCI, Alberto RESIGNED | Director | 16 Nov 2015 | 04 Oct 2017 | United Kingdom | February 1962 | Wellstream House, Wincomblee Road, Walker Riverside, Newcastle Upon Tyne, Tyne And Wear, NE6 3PF, United Kingdom |
| MAXWELL, George Walter Mitchell RESIGNED | Director | 02 Oct 2002 | 20 Nov 2002 | | January 1966 | 14523 Dracaena Court, Houston, Texas 77070, Usa |
| MENDONCA, Rogerio Guimaraes RESIGNED | Director | 27 Nov 2017 | 19 Jan 2021 | Brazil | August 1972 | Wellstream House, Wincomblee Road, Walker Riverside, Newcastle Upon Tyne, Tyne And Wear, NE6 3PF, United Kingdom |
| MOCK, James Michael RESIGNED | Director | 02 Dec 2014 | 06 Nov 2015 | United Kingdom | January 1977 | Silverburn House, Claymore Drive, Bridge Of Don, Aberdeen, Aberdeen City, AB23 8GD, United Kingdom |
| MUNRO, John George Allan RESIGNED | Director | 17 Jun 1996 | 11 Oct 2002 | | January 1959 | 74 Osborne Place, Aberdeen, Scotland, AB25 2DB |
| NICOLSON, Gillies Alexander RESIGNED | Director | 09 Apr 2003 | 08 Jul 2004 | | June 1941 | 7 Midmar Crescent, Kingswells, Aberdeen, AB15 8FD |
| ROBERTS, James Kenneth RESIGNED | Director | 21 Dec 2022 | 29 Feb 2024 | Wales | August 1976 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| ROEMMELE, Carl Adam Julius RESIGNED | Director | 19 Dec 2018 | 30 Mar 2022 | Scotland | September 1974 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| SALVADORI, Erica RESIGNED | Director | 01 Jan 2020 | 01 Dec 2022 | Italy | October 1982 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| SAUNDERS, Neil RESIGNED | Director | 20 Apr 2012 | 31 Jan 2023 | United Kingdom | July 1969 | 2630 The Quadrant, Aztec West, Almondsbury, Bristol, BS32 4GQ, England |
| SHAW, Gary Allen RESIGNED | Director | 02 Oct 2002 | 01 Oct 2003 | | February 1956 | 5310 Frensham Circle, Houston, Texas 77041, Usa |
| SLOAN, Alasdair Murray Campbell RESIGNED | Director | 30 Mar 2016 | 30 Nov 2022 | Scotland | March 1967 | Stoneywood Park North, Dyce, Aberdeen, AB21 7EA, Scotland |
| SMITH, Kevin Patrick RESIGNED | Director | 30 Mar 2016 | 18 Aug 2017 | United Kingdom | February 1979 | Silverburn House, Claymore Drive, Bridge Of Don, Aberdeen, Aberdeen City, AB23 8GD |
| SPENCE, Stuart Andrew RESIGNED | Director | 01 Dec 2004 | 23 Feb 2007 | | April 1969 | 2730 Garden Falls Drive, Manville, Texas 77578, Usa |
| STEPNIAK, Michael Piotr RESIGNED | Director | 27 Jan 2016 | 11 Feb 2020 | United Kingdom | May 1977 | Silverburn House, Claymore Drive, Bridge Of Don, Aberdeen, Aberdeenshire, AB23 8GD, United Kingdom |
| TARDITI, Giorgio Matteo RESIGNED | Director | 12 Aug 2010 | 10 Jun 2013 | Usa | August 1973 | 2 High Street, Nailsea, Bristol, BS48 1BS |
| THATCHER, Mark Timothy RESIGNED | Director | 10 Jun 1993 | 30 Sep 2002 | | October 1956 | 23 Freestone Place, The Woodlands, Texas, 77382, Usa |
| THOMSON, James Watson Palmer RESIGNED | Director | 16 Jul 2012 | 24 Dec 2015 | United Kingdom | August 1954 | Ge Oil & Gas Pressure Control, Blackhouse Circle, Blackhouse Industrial Estate, Peterhead, Aberdeenshire, AB42 1BN, United Kingdom |
| TIDWELL, James Martin RESIGNED | Director | | 31 Jul 1992 | | August 1946 | 142 Plantation, Houston Texas 770221, Usa, FOREIGN |
| TUCKER, David Emerson RESIGNED | Director | 04 Jan 2008 | 13 Mar 2009 | | June 1960 | 7 Riverway, Unit 1810, Houston, Texas, 77056, United States |
| WARE, Henry John RESIGNED | Director | 01 Sep 2009 | 16 Aug 2010 | | January 1965 | 12430 Calico Falls Lane, Houston, Texas 77041, Usa |