| Company | Timeline | Status | |
| Beckton Energy Limited Secretary • Unreported | 6 Sep 2007←1 Month→19 Oct 2007 | Active | |
| 2oc (Holdings) Limited Secretary • Unreported | 6 Sep 2007←1 Month→19 Oct 2007 | Dissolved | |
| National Grid Blue Power Limited Secretary • Unreported | 6 Sep 2007←1 Month→19 Oct 2007 | Dissolved | |
National Grid Blue Power Finance Limited Secretary • Unreported | 6 Sep 2007←1 Month→19 Oct 2007 | Dissolved | |
| National Gas Transmission Holdings Limited Secretary • Unreported | 28 Jun 2007←3 Months→19 Oct 2007 | Active | |
| National Grid Holdings One Plc Secretary • Unreported | 9 May 2007←5 Months→19 Oct 2007 | Active | |
| NGT Two Limited Secretary • Unreported | 8 May 2007←5 Months→19 Oct 2007 | Dissolved | |
NGT Three Secretary • Unreported | 8 May 2007←5 Months→19 Oct 2007 | Dissolved | |
| National Grid Thirty Six Limited Secretary • Unreported | 8 May 2007←5 Months→19 Oct 2007 | Dissolved | |
National Grid Twenty Limited Secretary • Unreported | 8 May 2007←5 Months→19 Oct 2007 | Dissolved | |
