| CENTRICA SECRETARIES LIMITED ACTIVE | Secretary | 16 May 2016 | | | | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| DICKINSON, James Michael ACTIVE | Director | 02 Oct 2023 | | United Kingdom | June 1980 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| PIKE, Christopher Richard ACTIVE | Director | 27 Jul 2026 | | United Kingdom | February 1980 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| WOOD, Matthew Christopher ACTIVE | Director | 10 Oct 2025 | | United Kingdom | June 1987 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| EVANS, Andrew John RESIGNED | Secretary | 03 May 1997 | 26 Jan 2012 | | | 36 Highfield Avenue, Newbold, Chesterfield, Derbyshire, S41 7AX |
| ROBERTSON, Andrew Bruce RESIGNED | Secretary | 31 Jan 1997 | 03 May 1997 | | | 1 Keiths Wood, Knebworth, Hertfordshire, SG3 6PU |
| ROBERTSON, Andrew Bruce RESIGNED | Secretary | 24 Jun 1994 | 27 Sep 1994 | | | 9 Eastor, Welwyn Garden City, Hertfordshire, AL7 1PN |
| SAUNDERS, Malcolm Waters RESIGNED | Secretary | 20 Jun 1991 | 19 Mar 1995 | | | Ty Newydd Grange Road, Ash, Aldershot, Hampshire, GU12 6HB |
| SIGLEY, Angela RESIGNED | Secretary | 27 Sep 1994 | 31 Jan 1997 | | | 31 Swanley Road, Welling, Kent, DA16 1LL |
| WARDNER, Richard RESIGNED | Secretary | 26 Jan 2012 | 16 May 2016 | | | Ener-G House, Daniel Adamson Road, Salford, Manchester, M50 1DT, United Kingdom |
| OFFICE ORGANIZATION & SERVICES LIMITED RESIGNED | Secretary | 20 Mar 1991 | 20 Jun 1991 | | | Level 1 Exchange House, Primrose Street, London, EC2A 2HS |
| SWIFT INCORPORATIONS LIMITED RESIGNED | Nominee Secretary | 19 Mar 1991 | 20 Mar 1991 | | | 26, Church Street, London, NW8 8EP |
| ALMOZAFFAR, Sam RESIGNED | Director | 20 Jun 1991 | 16 Jun 1994 | | August 1950 | Whatcroft Hall, Northwich, Cheshire, CW9 7SQ |
| ARMES, Christopher David RESIGNED | Director | 05 Jul 2001 | 31 Dec 2003 | | January 1967 | 6 Woodlands Road, Handforth, Wilmslow, Cheshire, SK9 3AW |
| BARLOW, Alan Kenneth RESIGNED | Director | 09 Mar 2000 | 05 Jul 2021 | England | September 1964 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| BELL, Robert Ian RESIGNED | Director | 19 Oct 1998 | 07 Jul 2000 | United Kingdom | July 1950 | Oaktree House, Westfields Road, Armitage, Staffordshire, WS15 4AH |
| BENSON, Grahame Paul RESIGNED | Director | 06 May 1992 | 24 Jun 1994 | England | September 1967 | 5 Blackchapel Drive, Rochdale, Lancashire, OL16 4QU |
| BUCKENHAM, Guy RESIGNED | Director | 16 Jan 1992 | 24 Jun 1994 | | December 1956 | 63 Woodside Road, New Malden, Surrey, KT3 3AW |
| CAMERON, Ian Thomas RESIGNED | Director | 24 Jun 1994 | 31 Dec 1995 | | September 1947 | 3 Deneway, Bramhall, Stockport, Cheshire, SK7 2AR |
| CHASSAGNE, Matthieu RESIGNED | Director | 01 Nov 2015 | 01 Oct 2017 | United Kingdom | May 1978 | Ener-G House, Daniel Adamson Road, Salford, Manchester, M50 1DT, United Kingdom |
| CLOUGH, Adrian John RESIGNED | Director | 01 May 1991 | 20 Jun 1991 | | April 1963 | 4 Norfolk House, London, W6 7QT |
| COLLISON, David RESIGNED | Director | 24 Jun 1994 | 03 May 1997 | United Kingdom | April 1950 | 44 Lowther Road, London, SW13 9NU, England |
| CORSON, John RESIGNED | Director | | 31 Aug 1994 | England | March 1951 | 57 Valley Road, Stockport, Cheshire, SK4 2DB |
| DENNIS, Michael Kenneth RESIGNED | Director | 06 Nov 2019 | 07 May 2024 | United Kingdom | July 1981 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| DIXON, Colin Spencer RESIGNED | Director | 01 Aug 2010 | 16 Apr 2021 | United Kingdom | April 1962 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| DUFFILL, Derek John RESIGNED | Director | 01 May 2008 | 30 May 2013 | United Kingdom | May 1952 | Ener-G House, Daniel Adamson, Road, Salford, Manchester, M50 1DT |
| EVANS, Andrew John RESIGNED | Director | 03 May 1997 | 16 May 2016 | United Kingdom | December 1949 | Ener-G House, Daniel Adamson Road, Salford, Manchester, M50 1DT, United Kingdom |
| FYFE, Manda Jane RESIGNED | Director | 01 May 1995 | 30 Sep 1995 | | December 1960 | 17 Burnside, Halebarns, Altrincham, Cheshire, WA15 0SG |
| HARGREAVES, Janet Elizabeth RESIGNED | Director | 24 Jun 1994 | 03 May 1997 | England | October 1955 | 86 Celeborn Street, South Woodham Ferrers, Chelmsford, Essex, CM3 7AF |
| HAYTON, Christopher James RESIGNED | Director | 23 Aug 2004 | 23 Oct 2015 | United Kingdom | May 1969 | Ener-G House, Daniel Adamson Road, Salford, Manchester, M50 1DT, United Kingdom |
| HOLMES, Michael Andrew RESIGNED | Director | 01 Oct 1993 | 24 Jun 1994 | | February 1946 | 63 The Avenue, Witham, Essex, CM8 2DN |
| HOPKINS, Ian Anthony RESIGNED | Director | 10 Apr 2013 | 08 Sep 2021 | United Kingdom | November 1972 | Ener-G House, Daniel Adamson Road, Salford, Manchester, M50 1DT, United Kingdom |
| JACOBER, Justin RESIGNED | Director | 01 Nov 2021 | 31 Jan 2024 | United Kingdom | March 1974 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| KIRWAN, Ian RESIGNED | Director | 17 Feb 2003 | 22 Jul 2003 | | March 1962 | 6 Ibbetson Close, Churwell Morley, Leeds, West Yorkshire, LS27 7SX |
| LANGSTAFF, John Kenneth RESIGNED | Director | 21 Oct 1997 | 15 Oct 1998 | | January 1929 | Chelston 40 Christchurch Lane, Lichfield, Staffordshire, WS13 8AN |
| LAW, Peter RESIGNED | Director | 23 Aug 2004 | 16 Jul 2021 | United Kingdom | March 1970 | Ener-G House, Daniel Adamson Road, Salford, Manchester, M50 1DT, United Kingdom |
| LAWTON, Paul Stephen RESIGNED | Director | 05 Jul 2021 | 01 May 2022 | United Kingdom | March 1966 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| LONGMUIR, Ailsa Zoya RESIGNED | Director | 01 Oct 2021 | 26 Jun 2023 | United Kingdom | November 1982 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| MACLELLAN, Andrew Ian RESIGNED | Director | 03 May 1997 | 01 Dec 1998 | United Kingdom | July 1955 | 35, Nightingale Avenue, Cambridge, Cambridgeshire, CB1 8SG |
| MARCHANT, Keith Michael RESIGNED | Director | 20 Jun 1991 | 19 Mar 1993 | | November 1957 | 9 Hendham Drive, Altrincham, Cheshire, WA14 4LY |
| MARSLAND, Christopher John RESIGNED | Director | 01 Apr 2009 | 12 Jun 2018 | United Kingdom | June 1962 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| MAYALL, Anthony RESIGNED | Director | 01 Aug 2010 | 22 May 2011 | England | January 1974 | Ener-G House, Daniel Adamson, Road, Salford, Manchester, M50 1DT |
| MCCORD, Richard RESIGNED | Director | 16 May 2016 | 06 Nov 2019 | England | January 1973 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| MCKENNA, Gregory Craig RESIGNED | Director | 08 Mar 2021 | 03 Jun 2024 | England | January 1966 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| MELLOR, David Roy RESIGNED | Director | 03 May 1997 | 17 Dec 2009 | United Kingdom | August 1945 | 88 St Wilfreds Road, West Hallam, Derby, Derbyshire, DE7 6HH |
| MORGAN, Kenneth Francis RESIGNED | Director | 20 Jun 1991 | 24 Jun 1994 | | June 1946 | 4 Craiglands Avenue, St Albans, Hertfordshire, AL4 9AH |
| MORGAN, Kenneth Francis RESIGNED | Director | | 19 Mar 1993 | | June 1946 | 4 Craiglands Avenue, St Albans, Hertfordshire, AL4 9AH |
| PACKER, Julian Phipps RESIGNED | Director | | 16 Jun 1994 | | November 1954 | 66 Calderbrook Drive, Cheadle Hulme, Cheadle, Cheshire, SK8 5RZ |
| PETHYBRIDGE, David Roger, Mr. RESIGNED | Director | 21 Jan 2021 | 30 Sep 2025 | England | August 1985 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| PHILLIPS, John RESIGNED | Director | 31 Jul 1991 | 16 Jan 1992 | | June 1949 | 7 Barton Road, London, W14 9HB |
| PIKE, Christopher Richard RESIGNED | Director | 22 Dec 2017 | 01 Sep 2019 | United Kingdom | February 1980 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| PIKUNIC, Jorge Pablo RESIGNED | Director | 16 May 2016 | 08 Mar 2021 | United Kingdom | January 1976 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| SCALLY, Derek Anthony RESIGNED | Director | 24 Jun 1994 | 03 May 1997 | | July 1964 | 13 The Hawthorns, Ware, Hertfordshire, SG12 0XY |
| SCOTT, Timothy Hays RESIGNED | Director | 03 May 1997 | 16 May 2016 | Jersey | March 1950 | Ener-G House, Daniel Adamson Road, Salford, Manchester, M50 1DT, United Kingdom |
| STELLA, Christian Andrew RESIGNED | Director | 31 Jan 2024 | 10 Oct 2025 | Italy | March 1981 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| TYRIE, Benjamin Charles RESIGNED | Director | 20 Jun 1991 | 01 Oct 1993 | | October 1938 | 21 Cavendish Gardens, Ilford, Essex, IG1 3EA |
| WHITE, Christopher John Lockhart RESIGNED | Director | 07 May 2024 | 27 Jul 2026 | United Kingdom | February 1983 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, England |
| WINSTANLEY, David RESIGNED | Director | 10 Apr 2013 | 31 Dec 2019 | United Kingdom | March 1975 | Ener-G House, Daniel Adamson Road, Salford, Manchester, M50 1DT, United Kingdom |
| WOODHEAD, Caroline RESIGNED | Director | 01 Apr 2012 | 21 Sep 2017 | United Kingdom | March 1973 | Ener-G House, Daniel Adamson Road, Salford, Manchester, M50 1DT, United Kingdom |
| ZIEVE, Jon Doron RESIGNED | Director | 16 Jan 1992 | 24 Jun 1994 | Uk | March 1950 | 35 Sedgecombe Avenue, Kenton, Harrow, Middlesex, HA3 0HW |
| ZIMMERMAN, Peter Michael RESIGNED | Director | 01 Sep 2019 | 21 Jan 2021 | United Kingdom | November 1971 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| INSTANT COMPANIES LIMITED RESIGNED | Nominee Director | 19 Mar 1991 | 19 Mar 1993 | | | 1, Mitchell Lane, Bristol, Avon, BS1 6BU |