| CENTRICA SECRETARIES LIMITED ACTIVE | Secretary | 29 Feb 2012 | | | | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| DENNIS, Michael Kenneth ACTIVE | Director | 23 Jul 2026 | | United Kingdom | July 1981 | Woodland House, Woodland Park, Hessle, HU13 0FA, United Kingdom |
| ROY, Rajarshi, Dr ACTIVE | Director | 08 Jun 2021 | | United Kingdom | January 1975 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| SCARGILL, Martin Robert ACTIVE | Director | 01 Aug 2020 | | United Kingdom | February 1976 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| ANDERSON, Linda RESIGNED | Secretary | 18 Feb 2000 | 17 Nov 2000 | | | 104 Wokingham Road, Reading, Berkshire, RG6 1JL |
| BARKER, Helen Elizabeth RESIGNED | Secretary | 16 Aug 2007 | 31 Mar 2008 | | | Ferry Cottage, Ferry Lane, Wargrave, Berkshire, RG10 8ET |
| BLODGETT, J Kevin RESIGNED | Secretary | 26 Jun 2002 | 14 Nov 2002 | | | 18227 Emerald Stone Lane, Houston, Texas 77094, United States |
| DAVIES, Philip William RESIGNED | Secretary | 01 Dec 2003 | 16 Aug 2007 | | | 26 Frances Road, Windsor, Berkshire, SL4 3AA |
| FOO, Julia Hui Ching RESIGNED | Secretary | 04 Jan 2010 | 29 Feb 2012 | | | Venture House 42-54, London Road, Staines, Middlesex, TW18 4HF |
| FOO, Julia Hui Ching RESIGNED | Secretary | 31 Mar 2008 | 25 Sep 2009 | | | 39, Clarendon Court, 128-132 Clarence Road, Windsor, Berkshire, SL4 5BL |
| GRIFFIN, John Edward Henry RESIGNED | Secretary | 18 Dec 1996 | 28 Nov 2001 | | | 155 Cannon Lane, Pinner, Middlesex, HA5 1HU |
| LODGE, Matthew Sebastian RESIGNED | Secretary | 25 Sep 2009 | 04 Jan 2010 | | | 25, Avondale Road, Mortlake, London, SW14 8PU |
| METTS, Lisa Quick RESIGNED | Secretary | 28 Nov 2001 | 26 Jun 2002 | | | 247 Saddle Ridge, The Woodlands, Texas 77380, Usa |
| POOLE, Andrew Philip RESIGNED | Secretary | 20 Jan 1999 | 18 Sep 2000 | | | Flat 28 2 Lansdowne Drive, London, E8 3EZ |
| CENTRICA SECRETARIES LIMITED RESIGNED | Secretary | 14 Nov 2002 | 01 Dec 2003 | | | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| WATERLOW SECRETARIES LIMITED RESIGNED | Nominee Secretary | 18 Dec 1996 | 18 Dec 1996 | | | 6-8 Underwood Street, London, N1 7JQ |
| BESSELL, James Stephen RESIGNED | Director | 30 Apr 2026 | 23 Jul 2026 | England | June 1977 | Woodland House, Woodland Park, Hessle, HU13 0FA, United Kingdom |
| BOARDMAN, John Matthew RESIGNED | Director | 21 Mar 2002 | 26 Sep 2002 | | June 1971 | 13 Admiralty Way, Teddington, Middlesex, TW11 0NL |
| CARDONE, Gary Thomas RESIGNED | Director | 28 Nov 2001 | 21 Mar 2002 | | March 1958 | Southington Mill House, The Lynch Overton, Basingstoke, Hampshire, RG25 3DQ |
| COHEN, Yehuda RESIGNED | Director | 10 Jul 2002 | 14 Nov 2002 | | March 1964 | 41 Priory Field Drive, Edgware, Middlesex, HA8 9PT |
| COLLINSON, Graeme Stuart, Dr RESIGNED | Director | 21 Jul 2008 | 20 Jan 2014 | England | May 1956 | Venture House, 42-54 London Road, Staines, Middlesex, TW18 4HF |
| CRAIG, James David RESIGNED | Director | 01 Oct 2013 | 11 Feb 2015 | The Netherlands | March 1968 | Venture House, 42-54 London Road, Staines, Middlesex, TW18 4HF, United Kingdom |
| DAWSON, Ian Grant RESIGNED | Director | 03 Nov 2003 | 06 Mar 2019 | United Kingdom | March 1959 | Woodland House, Woodland Park, Hessle, HU13 0FA, United Kingdom |
| DOTY JR, Robert Dupre RESIGNED | Director | 28 Nov 2001 | 29 Jul 2002 | | June 1957 | 1 Pine Crescent Court, Houston Texas 77024 |
| FLINN, Michael Edwin RESIGNED | Director | 21 Mar 2002 | 14 Nov 2002 | | September 1959 | 8a Eaton Park, Cobham, Surrey, KT11 2JE |
| FORD, Johnathan Richard RESIGNED | Director | 24 Jul 2020 | 18 Jan 2021 | England | September 1969 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| FRIEDRICH, William Michael RESIGNED | Director | 01 Dec 1999 | 28 Nov 2001 | | January 1949 | Eagle House, 108-110 Jermyn Street, London, SW1Y 6RP |
| GARSTANG, Michael John RESIGNED | Director | 03 Nov 2003 | 27 Jun 2008 | United Kingdom | June 1948 | Knott Barn, Tatham Fells, Wray, Lancaster, LA2 8PS |
| GEDDES, Alistair George Sinclair RESIGNED | Director | 21 Aug 2000 | 10 Jul 2002 | | April 1962 | 18 Cromar Gardens, Kingswells, Aberdeen, Grampian, AB15 8TF |
| GRIFFIN, John Edward Henry RESIGNED | Director | 18 Dec 1996 | 01 Dec 1999 | | January 1949 | 155 Cannon Lane, Pinner, Middlesex, HA5 1HU |
| HIGGINS, Howard Charles RESIGNED | Director | 01 Dec 1999 | 01 Feb 2001 | United Kingdom | March 1953 | Church Farm, Glasshouse Lane Hockley Heath, Solihull, West Midlands, B94 6PU |
| KEANE, David Naughton RESIGNED | Director | 21 Mar 2002 | 18 Oct 2002 | | March 1951 | 96 Kings Road, Richmond, Surrey, TW10 6EE |
| KINOULTY, Martin Colum Francis RESIGNED | Director | 01 Dec 1999 | 28 Nov 2001 | England | December 1955 | 1 Park House, Church Road, Snitterfield, Warwickshire, CV37 0LE |
| MARKHAM, Una RESIGNED | Director | 18 Dec 1996 | 01 Dec 1999 | | May 1959 | 18 Howard Road, Wokingham, Berkshire, RG40 2BX |
| MCKENNA, Gregory Craig RESIGNED | Director | 11 Feb 2015 | 05 Aug 2021 | United Kingdom | January 1966 | Woodland House, Woodland Park, Hessle, HU13 0FA, United Kingdom |
| MORRIS, Adrian Charles RESIGNED | Director | 14 Nov 2002 | 03 Nov 2003 | | April 1967 | 5 Permain Close, Shenley, Radlet, Hertfordshire, WD7 9DR |
| O'SHEA, Christopher RESIGNED | Director | 06 Mar 2019 | 24 Jul 2020 | United Kingdom | October 1973 | Woodland House, Woodland Park, Hessle, HU13 0FA, United Kingdom |
| OLIVER, Darren RESIGNED | Director | 18 Dec 2018 | 31 Jul 2020 | England | December 1971 | Woodland House, Woodland Park, Hessle, HU13 0FA, United Kingdom |
| OLIVER, John Richard RESIGNED | Director | 21 Mar 2002 | 14 Nov 2002 | United Kingdom | March 1960 | Staffield, Carron Lane, Midhurst, West Sussex, GU29 9LB |
| PITCHFORD, Lloyd Mark RESIGNED | Director | 01 Dec 1999 | 23 Mar 2001 | | August 1971 | Hollies Farm Cottage, Coton Road, Marston, Sutton Coldfield, West Midlands, B76 0DN |
| RINGROSE, Katherine Beresford RESIGNED | Director | 18 Jan 2021 | 08 Jun 2021 | United Kingdom | May 1974 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| ROTH, David R RESIGNED | Director | 28 Nov 2001 | 08 Jul 2002 | | December 1965 | 20 St Christopher Court, Sugarland, Texas, 77479, Usa |
| RUSSELL, William Paterson RESIGNED | Director | 01 Dec 1999 | 31 Jul 2000 | | November 1954 | Le Rosla, Cedar Drive, Snitterfield, Stratford Upon Avon, Warwickshire, CV37 0LJ |
| SCRIMSHAW, Matthew Giles RESIGNED | Director | 10 Jul 2002 | 14 Nov 2002 | | July 1965 | Beech Coppice, Woodland Way, Tadworth, Surrey, KT20 6NW |
| SHAW, Nigel Richard RESIGNED | Director | 01 Feb 2001 | 27 Jul 2001 | | October 1954 | 50 Hillmorton Road, Rugby, Warwickshire, CV22 5AD |
| THOMAS, Luke RESIGNED | Director | 03 Nov 1998 | 14 Jan 1999 | | June 1966 | 94 Watcombe Road, South Norwood, London, SE25 4UZ |
| THOMSEN, Trine Rath RESIGNED | Director | 18 Dec 2018 | 30 Apr 2026 | United Kingdom | August 1966 | Woodland House, Woodland Park, Hessle, HU13 0FA, United Kingdom |
| ULRICH, Jacob Shields RESIGNED | Director | 14 Nov 2002 | 03 Nov 2003 | England | February 1953 | 74 Drayton Gardens, London, SW10 9SB |
| WAKEFIELD, Nigel John RESIGNED | Director | 28 Nov 2001 | 14 Nov 2002 | | April 1966 | 2 Lyford Road, London, SW18 3LG |
| WALKER, Bruce Douglas RESIGNED | Director | 03 Nov 2003 | 31 Jul 2008 | | July 1953 | 90 Kenwood Drive, Beckenham, Kent, BR3 6RA |
| WARD, James Gordon RESIGNED | Director | 01 Dec 1999 | 09 Mar 2001 | | August 1963 | 42a Clifton Gardens, London, W9 1AU |
| WILLS, Simon Marc RESIGNED | Director | 31 Jul 2008 | 01 Oct 2013 | England | August 1967 | Venture House, 42-54 London Road, Staines, Middlesex, TW18 4HF |
| WATERLOW NOMINEES LIMITED RESIGNED | Nominee Director | 18 Dec 1996 | 18 Dec 1996 | | | 6-8 Underwood Street, London, N1 7JQ |