| Company | Timeline | Status | |
| Sarah Lang Design Ltd Director • Management Consultant | 8 Apr 2016←1 Year 6 Months→20 Oct 2017 | Active | |
| Sarah Lang Design Ltd Director • Telecommunication Consultant | 20 Aug 2014←1 Year 6 Months→20 Feb 2016 | Active | |
You Can Roam Global Ltd Director • Telecoms Consultant | 20 Mar 2014←2 Years 5 Months→30 Aug 2016 | Dissolved | |
| Sarah Lang Design Ltd Secretary • Telecomms Manager | 1 Sep 2002←1 Year 1 Month→26 Oct 2003 | Active | |
| Mauve Corporate Systems UK Limited Secretary • Telecomms Manager | 22 Sep 2001←2 Years 11 Months→20 Aug 2004 | Active | |
