| VISTRA COMPANY SECRETARIES LIMITED ACTIVE | Secretary | 06 May 2009 | | | | Ground Floor, Templeback, 10 Temple Back, Bristol, BS1 6FL, United Kingdom |
| BARBARO, Gabriele Saturnio ACTIVE | Director | 23 Oct 2020 | | England | July 1971 | 28-29 Dover Street, Dover Street, London, W1S 4NA, England |
| BARRY, John Richard ACTIVE | Director | 23 Dec 2019 | | England | January 1968 | 60 Victoria Embankment, London, EC4Y 0JP, United Kingdom |
| FLETCHER, Angela Sarah Helen ACTIVE | Director | 03 Feb 2025 | | Scotland | August 1970 | 28-29, Dover Street, London, W1S 4NA, England |
| BOYD, Justin Martin Alexander RESIGNED | Secretary | 25 Jul 1994 | 11 Jan 1995 | | | 208 Frobisher House, Dolphin Square, London, SW1V 3LL |
| BROWN, Michael Ross RESIGNED | Secretary | 15 Sep 1999 | 17 Jul 2000 | | | 1 Ayres End Cottages, Ayres End Lane, Harpenden, Hertfordshire, AL5 1AL |
| FEDUCHIN, Nicola Tamaris RESIGNED | Secretary | 17 Dec 1992 | 21 Sep 1993 | | | 3 Hill House, 1 Highfield, Lymington, Hampshire, SO41 9GB |
| KELLY, Susan Kathleen RESIGNED | Secretary | 17 Jul 2000 | 28 Sep 2001 | | | 13 Waldo Close, Clapham, London, SW4 9EY |
| SEFTON, Scott Matthew RESIGNED | Secretary | 11 Jan 1995 | 15 Sep 1999 | | | 249 Pavilion Road, London, SW1X 0BP |
| STYLES, Peter Richard RESIGNED | Secretary | 21 Sep 1993 | 25 Jul 1994 | | | 35 Spring Gardens, London, SW1A 2BA |
| UNDERDOWN, Timothy James RESIGNED | Secretary | 10 Jul 2002 | 14 Jul 2004 | | | 107 Low Coniscliffe, Darlington, Durham, DL2 2NG |
| E P S SECRETARIES LIMITED RESIGNED | Nominee Secretary | 25 Nov 1992 | 17 Dec 1992 | | | 50 Stratton Street, London, W1X 6NX |
| ENRON SECRETARIES LIMITED RESIGNED | Secretary | 24 Sep 2001 | 10 Jul 2002 | | | Enron House 40 Grosvenor Place, London, SW1X 7EN |
| PX APPOINTMENTS LIMITED RESIGNED | Secretary | 14 Jul 2004 | 06 May 2009 | | | Px House, Westpoint Road, Stockton On Tees, TS17 6BF |
| ALFORD, Bradley Keith RESIGNED | Director | 07 May 1997 | 09 Jul 1998 | | July 1957 | 64 Limerston Street, London, SW10 0HJ |
| BALDWIN, Robert Henry, Dr RESIGNED | Director | 17 Dec 1992 | 07 Jul 1994 | | December 1947 | 195 Pavilion Road, London, SW1X 0BJ |
| BISSO, Mark RESIGNED | Director | 15 Aug 2013 | 17 Mar 2015 | United States Of America | June 1978 | 200, Clarendon Street, Boston, Massachusetts 02117, United States Of America |
| BROWN, Michael Ross RESIGNED | Director | 21 Jun 2002 | 18 Dec 2012 | United Kingdom | July 1962 | 1 Ayres End Cottages, Ayres End Lane, Harpenden, Hertfordshire, AL5 1AL |
| BROWN, Michael Ross RESIGNED | Director | 10 Dec 2001 | 15 Feb 2002 | United Kingdom | July 1962 | 1 Ayres End Cottages, Ayres End Lane, Harpenden, Hertfordshire, AL5 1AL |
| BROWN, Michael Ross RESIGNED | Director | 10 Dec 2001 | 15 Feb 2002 | United Kingdom | July 1962 | 1 Ayres End Cottages, Ayres End Lane, Harpenden, Hertfordshire, AL5 1AL |
| BROWN, Michael Ross RESIGNED | Director | 17 Jul 2000 | 28 Sep 2001 | United Kingdom | July 1962 | 1 Ayres End Cottages, Ayres End Lane, Harpenden, Hertfordshire, AL5 1AL |
| CHIVERS, Paul Clifford RESIGNED | Director | 23 Sep 1998 | 23 May 2001 | England | April 1962 | 7 Randolph Road, London, W9 1AN |
| COX, Sayma RESIGNED | Director | 21 Sep 2022 | 22 Nov 2024 | United Kingdom | July 1975 | 28-29, Dover Street, London, W1S 4NA, United Kingdom |
| DERRICK, James Vinson RESIGNED | Director | 13 Nov 1995 | 28 Sep 2001 | | January 1945 | 1824 Larchmont, Houston Texas 77019, Usa |
| DYSON, Fernley Keith RESIGNED | Director | 12 Mar 1999 | 28 Sep 2001 | | February 1965 | 152 Irchester Road, Rushden, Northamptonshire, NN10 9QU |
| EDGLEY, Anne Janette RESIGNED | Director | 23 May 2001 | 28 Sep 2001 | | December 1955 | Apartment E 21 Monevetro, 100 Battersea Church Road, London, SW11 3YL |
| FREVERT, Mark Albert RESIGNED | Director | 08 Dec 1995 | 28 Sep 2001 | | February 1954 | 4 St Marys Place, Marloes Road, London, W8 5UE |
| HENDERSON, John Carl RESIGNED | Director | 02 Jun 1995 | 06 Feb 1997 | | May 1964 | 14 Stanford Court, 45 Cornwall Gardens, London, SW7 4AB |
| HEPPEL, Andrew Robert William RESIGNED | Director | 31 Mar 2010 | 21 Sep 2022 | United Kingdom | January 1971 | Suite 1, 3rd Floor, 11-12 St. James's Square, London, SW1Y 4LB, United Kingdom |
| HUNEKE, Kurt Steven RESIGNED | Director | 17 Dec 1992 | 22 Jan 1993 | | July 1953 | 54 Castellain Road, London, W9 1EX |
| KASKEL, Raymond Russell RESIGNED | Director | 17 Dec 1992 | 22 Jan 1993 | | April 1938 | 8 Princess Mews, London, NW3 5AP |
| KUHNLEY, Adam Neil RESIGNED | Director | 17 Mar 2015 | 24 Sep 2018 | United States | July 1984 | Suite 1, 3rd Floor, 11-12 St. James's Square, London, SW1Y 4LB, United Kingdom |
| LIM, Karl RESIGNED | Director | 25 Jul 2019 | 23 Oct 2020 | England | October 1973 | First Floor, Templeback, 10 Temple Back, Bristol, BS1 6FL, United Kingdom |
| MARTIN, Howard Dale RESIGNED | Director | 18 Dec 1992 | 25 May 1993 | | January 1932 | 54 Sydney Street, London, SW3 |
| MARTIN, Howard Dale RESIGNED | Director | | 18 Nov 1994 | | January 1932 | 54 Sydney Street, London, SW3 |
| MCCARTY, Danny Joe RESIGNED | Director | 03 Feb 1997 | 29 Jun 2000 | | May 1957 | Heath Corner, Queens Drive, Oxshott, Leatherhead, Surrey, KT22 0PB |
| MCLEOD, Andrew John RESIGNED | Director | 22 Jan 1993 | 03 Sep 1998 | England | March 1943 | Pear Tree Cottage, Main Street, Thornton Le Moor, North Yorkshire, DL7 9EA |
| MCMAHON, Jeffrey RESIGNED | Director | 28 Nov 1995 | 18 Jun 1998 | | October 1960 | Flat 2 13-14 Vicarage Gate, London, W8 4AG |
| OZSANLAV, Richard RESIGNED | Director | 22 Nov 2024 | 17 Feb 2025 | United Kingdom | May 1969 | 28-29, Dover Street, London, W1S 4NA, England |
| PICOTTE, Christopher James RESIGNED | Director | 18 Dec 2012 | 15 Aug 2013 | United States | February 1970 | 20-22, Bedford Row, London, WC1R 4JS, United Kingdom |
| REVERS, Daniel Raymond RESIGNED | Director | 18 Dec 2012 | 24 Sep 2018 | United States | February 1962 | Suite 1, 3rd Floor, 11-12 St. James's Square, London, SW1Y 4LB, United Kingdom |
| RICE, Kenneth Duane RESIGNED | Director | 01 May 1997 | 20 Jul 1999 | | August 1958 | 4531 Birch, Bellaire, Texas, Usa |
| ROBERTS, Geoffrey RESIGNED | Director | 07 Jul 1994 | 03 Feb 1997 | | March 1960 | 16 Dunnan Lane, Houston, Texas 77381, Usa |
| SHERRIFF, John Richard RESIGNED | Director | 19 Feb 1999 | 28 Sep 2001 | | September 1953 | The Great Barn, Powdermill Lane, Leigh, Kent, TN11 8PY |
| SKILLING, Jeffrey Keith RESIGNED | Director | 13 Nov 1995 | 26 Mar 1997 | | November 1953 | 1912 North Boulevard, Houston, Texas, 77098, Usa |
| SOCHOCKI, Piotr Lukasz RESIGNED | Director | 24 Sep 2018 | 25 Jul 2019 | United Kingdom | January 1982 | Wren House Infrastructure Management Limited,, Wren House, 15 Carter Lane, London, EC4V 5EY, United Kingdom |
| SULAIMAN, Sara Murtadha Jaffar RESIGNED | Director | 19 Feb 2019 | 23 Dec 2019 | United Kingdom | December 1977 | 60 Victoria Embankment, London, EC4Y 0JP, United Kingdom |
| VAN DER SCHEE, Jurriaan Laurens RESIGNED | Director | 31 Mar 2010 | 18 Dec 2012 | England | April 1977 | Buchanan House 3, St James's Square, London, SW1Y 4JU, United Kingdom |
| WEATHERILL, David RESIGNED | Director | 22 Jan 1993 | 19 Jan 2000 | | August 1948 | Beacon Croft, West End, Osmotherly, North Yorkshire, DL6 3PP |
| WILLIAMS, Gareth RESIGNED | Director | 24 Sep 2018 | 14 Jul 2019 | England | September 1974 | Suite 1, 3rd Floor, 11-12 St. James's Square, London, SW1Y 4LB, United Kingdom |
| WINGROVE, Gerald Langdon RESIGNED | Director | 18 Dec 1992 | 28 Nov 1995 | United Kingdom | October 1954 | 96 Albert Street, London, NW1 7NE |
| ZAMBELLI, Andrea RESIGNED | Director | 31 Mar 2010 | 18 Dec 2012 | England | February 1975 | 18, Southdean Gardens, London, SW19 6NU, United Kingdom |
| MIKJON LIMITED RESIGNED | Nominee Director | 25 Nov 1992 | 17 Dec 1992 | | | 50 Stratton Street, London, W1X 5FL |