| COSGROVE, Carolyn Fiona ACTIVE | Secretary | 25 Nov 2024 | | | | 3rd Floor, 1 Ashley Road, Altrincham, Cheshire, WA14 2DT, United Kingdom |
| BOYLE, Bruce ACTIVE | Director | 04 Sep 2024 | | United Kingdom | April 1974 | 3rd Floor, 1 Ashley Road, Altrincham, Cheshire, WA14 2DT, United Kingdom |
| COSGROVE, Carolyn Fiona ACTIVE | Director | 04 Sep 2024 | | Scotland | November 1971 | 3rd Floor, 1 Ashley Road, Altrincham, Cheshire, WA14 2DT, United Kingdom |
| DUJACQUIER, David Michel Jacques ACTIVE | Director | 06 Aug 2025 | | Belgium | January 1970 | 3rd Floor, 1 Ashley Road, Altrincham, Cheshire, WA14 2DT, United Kingdom |
| DICKERSON, Lawrence Richard RESIGNED | Secretary | 30 Mar 1992 | 31 Dec 1993 | | | 4116 Coleridge Street, Houston, Texas, 77005, Usa |
| LIONBERGER, Richard Lee RESIGNED | Secretary | 30 Sep 1993 | 22 Jun 1998 | | | 7403 Foster Creek Drive, Richmond, Texas, 77469, Usa |
| LIONBERGER, Richard Lee RESIGNED | Secretary | | 20 Aug 1993 | | | 7403 Foster Creek Drive, Richmond, Texas, 77469, Usa |
| LONG, William Charles RESIGNED | Secretary | 06 Dec 1999 | 04 Jan 2003 | | | 2404 Wordsworth Street, Houston, 77030-1834, Texas Usa |
| DENTONS SECRETARIES LIMITED RESIGNED | Secretary | 27 Oct 2017 | 31 Oct 2024 | | | One Fleet Place, London, EC4M 7WS, United Kingdom |
| EPS SECRETARIES LIMITED RESIGNED | Secretary | 20 Aug 1993 | 31 Dec 1999 | | | Lacon House, Theobalds Road, London, WC1X 8RW |
| MACLAY MURRAY & SPENS LLP RESIGNED | Nominee Secretary | 06 Dec 1999 | 27 Oct 2017 | | | 1, George Square, Glasgow, G2 1AL, United Kingdom |
| BHAMRA, Sonia RESIGNED | Director | 28 Jan 2021 | 13 Aug 2021 | England | December 1989 | One Fleet Place, London, EC4M 7WS, United Kingdom |
| DICKERSON, Lawrence Richard RESIGNED | Director | | 31 Dec 2002 | | December 1952 | 4116 Coleridge Street, Houston, Texas, 77005, Usa |
| ELWOOD, Stephen Glenn RESIGNED | Director | 16 Nov 2000 | 24 May 2018 | | April 1956 | 15415 Katy Freeway, Houston, Texas 77094 |
| HENDERSON, George Creighton Cole RESIGNED | Director | 11 Nov 2008 | 25 May 2020 | Scotland | September 1959 | Howe Moss Drive, Kirkhill Industrial Estate, Dyce, Aberdeen, AB21 0GL, United Kingdom |
| JAMES, Ronald Leon RESIGNED | Director | 31 Dec 2002 | 01 May 2004 | | November 1954 | 43 Coull Gardens, Kingswells, Aberdeen, Aberdeenshire, AB15 8TQ |
| JOHNSON, Ronald Charles RESIGNED | Director | | 01 Mar 1996 | | July 1940 | 107 Kingsgate, Aberdeen, AB2 6BN |
| KRENEK, Gary Thomas RESIGNED | Director | 23 Sep 1998 | 29 Dec 1998 | | February 1958 | Route 2 Box 40, East Bernard, Texas, 77435, Usa |
| LIONBERGER, Richard Lee RESIGNED | Director | | 22 Jun 1998 | | June 1950 | 7403 Foster Creek Drive, Richmond, Texas, 77469, Usa |
| LONG, William Charles RESIGNED | Director | 16 Nov 2000 | 03 Jun 2014 | United Kingdom | March 1966 | Katy Freeway, Houston, Texas 77024, Usa, Usa |
| MACLEOD, Robert Murdo RESIGNED | Director | | 31 Dec 1993 | | February 1940 | The Neuk, Station Road, Ellon, Aberdeenshire, AB41 9AY |
| MALE, Richard RESIGNED | Director | 06 Dec 2021 | 23 Sep 2023 | Scotland | June 1971 | One Fleet Place, London, EC4M 7WS, United Kingdom |
| MALE, Richard RESIGNED | Director | 13 Aug 2021 | 14 Sep 2021 | Scotland | June 1971 | One Fleet Place, London, EC4M 7WS, United Kingdom |
| MALONE, Ruth Angela RESIGNED | Director | 06 Dec 2021 | 21 Apr 2022 | England | January 1990 | One Fleet Place, London, EC4M 7WS, United Kingdom |
| MALONE, Ruth Angela RESIGNED | Director | 30 Jun 2021 | 14 Sep 2021 | England | January 1990 | One Fleet Place, London, EC4M 7WS, United Kingdom |
| MCALPINE, Kenneth William RESIGNED | Director | 29 Dec 1998 | 20 Aug 1999 | | December 1965 | 10 Bentinck Street, Galston, Ayrshire, KA4 8HT |
| MCEVOY, Emmett Vivien RESIGNED | Director | 10 Dec 2020 | 28 Jan 2021 | England | December 1976 | One Fleet Place, London, EC4M 7WS, United Kingdom |
| MOORE, Jimmy Ray RESIGNED | Director | 10 Apr 2006 | 06 Dec 2011 | United Kingdom | April 1963 | Howe Moss Drive, Kirkhill Industrial Estate, Dyce, Aberdeen, AB21 0GL, United Kingdom |
| OWENS, Jerry Ray RESIGNED | Director | 01 May 2004 | 10 Apr 2006 | | February 1945 | 43 Coull Gardens, Kingswells, Aberdeen, Aberdeenshire, AB15 8TQ |
| RICHARDS, John Lawhon RESIGNED | Director | 08 Dec 2011 | 09 Jul 2012 | Scotland | January 1974 | Howe Moss Drive, Kirkhill Industrial Estate, Dyce, AB21 0GL, Scotland |
| ROLAND, David Lynn RESIGNED | Director | 15 Oct 2014 | 04 Sep 2024 | United States | June 1961 | 777, N. Eldridge Pkwy, Suite 1100, Houston, Texas, 77079, United States |
| ROSE, Robert Ernest RESIGNED | Director | | 31 Mar 1998 | | October 1938 | 15415 Katy Freeway, Houston, Texas, Usa |
| SAVARINO, Dominic Antony RESIGNED | Director | 24 May 2018 | 04 Sep 2024 | United States | April 1970 | 777, N. Eldridge Pkwy, Suite 1100, Houston, Texas, 77079, United States |
| WALDORF, Terence RESIGNED | Director | 03 Jun 2014 | 15 Oct 2014 | Usa | January 1969 | 15415, Katy Freeway, Suite 300, Houston, Texas 77094, Usa |
| WEIR, Charles Duncan RESIGNED | Director | 20 Aug 1999 | 31 Dec 2002 | | June 1952 | Beechlea, School Road, Kintore, Aberdeenshire, AB51 0UX |
| WILLIAMS, Bobby Lee RESIGNED | Director | 10 Dec 2020 | 21 Jun 2021 | England | April 1984 | One Fleet Place, London, EC4M 7WS, United Kingdom |
| WILLIAMS, David Wendall RESIGNED | Director | 29 Dec 1998 | 15 Sep 2006 | | April 1957 | 2710 Mountain Green Trail, Kingwood, Texas, 77345, Usa |