| Company | Timeline | Status | |
| The National Gas Museum Trust Secretary • Unreported | 15 Dec 2006←8 Months→16 Aug 2007 | Active | |
| GF One Limited Secretary • Unreported | 28 Apr 2004←3 Years→3 Aug 2007 | Liquidation | |
| GF Two Limited Secretary • Unreported | 28 Apr 2004←3 Years→3 Aug 2007 | Liquidation | |
| Centrica Storage Holdings Limited Secretary • Unreported | 1 Dec 2003←3 Years→16 Aug 2007 | Active | |
| Centrica Offshore UK Limited Secretary • Unreported | 1 Dec 2003←3 Years→16 Aug 2007 | Active | |
| Centrica Onshore Processing UK Limited Secretary • Unreported | 1 Dec 2003←3 Years→16 Aug 2007 | Dissolved | |
| Centrica Energy Storage Limited Secretary • Unreported | 1 Dec 2003←3 Years→16 Aug 2007 | Active | |
| Centrica Secretaries Limited Secretary • Unreported | 3 Aug 2000←3 Years→1 Dec 2003 | Active | |
