| Company | Timeline | Status | |
| Npower Northern Supply Limited Secretary • Unreported | 1 Jul 2002←4 Years→30 Jun 2006 | Active | |
| Npower Yorkshire Limited Secretary • Unreported | 1 Apr 2002←4 Years→30 Jun 2006 | Active | |
| Npower Northern Limited Secretary • Unreported | 29 Oct 2001←4 Years→30 Jun 2006 | Active | |
| Npower Northern Supply Limited Director • Director | 1 Oct 2001←6 Months→18 Apr 2002 | Active | |
| Npower Yorkshire Supply Limited Secretary • Unreported | 2 Aug 2001←4 Years→30 Jun 2006 | Active | |
| Npower Northern Limited Director • Solicitor | 30 Jul 2001←1 Month→5 Sep 2001 | Active | |
| Npower Financial Services Limited Secretary • Unreported | 31 Mar 2001←5 Years→30 Jun 2006 | Dissolved | |
| Npower Commercial Gas Limited Secretary • Solicitor | 8 Jun 1999←7 Years→30 Jun 2006 | Active | |
| Npower Limited Secretary • Solicitor | 8 Jun 1999←12 Years→11 Aug 2011 | Active | |
| Npower Gas Limited Secretary • Solicitor | 8 Jun 1999←7 Years→30 Jun 2006 | Active | |
