| CENTRICA SECRETARIES LIMITED ACTIVE | Secretary | 11 Sep 2000 | | | | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| O'BRIEN, Russell Leslie ACTIVE | Director | 28 Feb 2023 | | England | January 1974 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| ROY, Rajarshi, Dr ACTIVE | Director | 30 Sep 2020 | | United Kingdom | January 1975 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| CALDWELL, Lucy Elizabeth RESIGNED | Secretary | 03 Nov 1999 | 11 Sep 2000 | | | 19 St Davids Drive, Englefield Green, Surrey, TW20 0BA |
| FURMSTON, Teresa Jane RESIGNED | Secretary | 30 Jan 1997 | 22 Feb 1999 | | | 12 Hinchley Close, Esher, Surrey, KT10 0BY |
| GARRIHY, Anne RESIGNED | Secretary | 27 Jun 1996 | 11 Sep 2000 | | | 38 Bunbury Way, Epsom, Surrey, KT17 4JP |
| SMITH, Marie RESIGNED | Secretary | 27 Jun 1996 | 23 Oct 1996 | | | 10 Hatch Place, Kingston Upon Thames, Surrey, KT2 5NB |
| COMBINED SECRETARIAL SERVICES LIMITED RESIGNED | Nominee Secretary | 15 Apr 1996 | 27 Jun 1996 | | | Victoria House, 64 Paul Street, London, EC2A 4NG |
| ALEXANDER, Michael Richard RESIGNED | Director | 04 Feb 2002 | 28 Feb 2003 | United Kingdom | November 1947 | 1 Hibberts Way, Gerrards Cross, Buckinghamshire, SL9 8UD |
| BELL, Jeffrey Allan RESIGNED | Director | 30 Jul 2010 | 01 Nov 2018 | United Kingdom | January 1967 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| BENTLEY, Phillip Keague RESIGNED | Director | 20 Nov 2000 | 17 Sep 2007 | United Kingdom | January 1959 | Pembroke House, 6 Waldegrave Park, Twickenham, Middlesex, TW1 4TE |
| CAMPBELL, Justine RESIGNED | Director | 31 Mar 2019 | 30 Sep 2020 | England | August 1970 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| CLARE, Mark Sydney RESIGNED | Director | 27 Jun 1996 | 30 Sep 2006 | | August 1957 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| DAWSON, Ian Grant RESIGNED | Director | 28 Jan 1997 | 31 Mar 2019 | United Kingdom | March 1959 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| FORD, Johnathan Richard RESIGNED | Director | 24 Jul 2020 | 18 Jan 2021 | England | September 1969 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| GARDNER, Roy Alan, Sir RESIGNED | Director | 27 Jun 1996 | 30 Jun 2006 | | August 1945 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| LAIDLAW, William Samuel Hugh RESIGNED | Director | 03 Jul 2006 | 17 Sep 2007 | United Kingdom | January 1956 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| LUFF, Nicholas Lawrence RESIGNED | Director | 17 Sep 2007 | 31 Aug 2014 | United Kingdom | March 1967 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| O'SHEA, Christopher Michael RESIGNED | Director | 01 Nov 2018 | 24 Jul 2020 | England | October 1973 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| PAGE, Andrew Slaney RESIGNED | Director | 31 Aug 2014 | 31 Dec 2017 | England | March 1973 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| RINGROSE, Katherine Beresford RESIGNED | Director | 18 Nov 2019 | 28 Feb 2023 | United Kingdom | May 1974 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD, United Kingdom |
| TODD, Alistair Mark RESIGNED | Director | 01 Jan 2018 | 18 Nov 2019 | United Kingdom | November 1975 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| TURNER, Moira Lynne RESIGNED | Director | 17 Sep 2007 | 30 Jul 2010 | England | July 1962 | Millstream Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| WESTON, Christopher Phillip Anthony RESIGNED | Director | 15 Oct 2008 | 28 Apr 2009 | United Kingdom | January 1964 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| COMBINED NOMINEES LIMITED RESIGNED | Nominee Director | 15 Apr 1996 | 27 Jun 1996 | | | Victoria House, 64 Paul Street, London, EC2A 4NA |
| COMBINED SECRETARIAL SERVICES LIMITED RESIGNED | Nominee Director | 15 Apr 1996 | 27 Jun 1996 | | | Victoria House, 64 Paul Street, London, EC2A 4NG |