| Company | Timeline | Status | |
| Colt Technology Services Group Limited Secretary • Unreported | 10 Aug 2006←2 Years 1 Month→1 Oct 2008 | Active | |
| Colt Mobile Telecommunications Limited Secretary • Unreported | 20 Mar 2006←2 Years 6 Months→1 Oct 2008 | Active | |
| Colt Pension Trustees Limited Secretary • Unreported | 14 Jul 2005←3 Years→1 Oct 2008 | Dissolved | |
| Colt Telecom Finance Denmark Secretary • Unreported | 1 Jul 2005←3 Years→1 Oct 2008 | Active | |
| Colt Telecom Finance Switzerland Secretary • Unreported | 1 Jul 2005←3 Years→1 Oct 2008 | Active | |
| Colt Telecom Finance Euro Secretary • Unreported | 1 Jul 2005←3 Years→1 Oct 2008 | Active | |
| Colt Telecom Finance Sweden Secretary • Unreported | 1 Jul 2005←3 Years→1 Oct 2008 | Active | |
| Colt Telecommunications Nominees Limited Secretary • Unreported | 1 Jul 2005←3 Years→1 Oct 2008 | Dissolved | |
| Colt Telecom Share Scheme Trustees Limited Secretary • Unreported | 1 Jul 2005←3 Years→1 Oct 2008 | Dissolved | |
| Colt Telecom Holdings Limited Secretary • Unreported | 1 Jul 2005←3 Years→1 Oct 2008 | Active | |
